Several studies on butterfly ecology and biology of Melitaeini butterflies have been carried out in the past, however the factors affecting butterfly mortality and the role of natural enemies on population dynamics are not yet fully known. Larval survival plays a key role in determining butterfly population size and distribution range; thus, knowing the sources and variation in larval mortality is essential understanding and predicting population dynamics. Butterfly larval mortality is generally ascribed to abiotic factors, predators and parasitoids (mainly Diptera and Hymenoptera). Among Diptera, tachinids parasitize primarily larval Lepidoptera. In this paper, we report the results of 5-year observations in the wild and captivity on the tachinids, Erycia furibunda and E. festinans, parasitoids of caterpillars of a population of Euphydryas aurinia spp. provincialis and Melitaea cinxia in Central Italy revealing their host specifity. The hosts, E. aurinia and M. cinxia, and parasitoids, E. furibunda and E. festinans, inhabit the same habitat and their life cycles highly overlap, nevertheless, the parasitoids maintain their host specifity: E. furibunda as parasitoid of E. aurinia; E. festinans as parasitoid of M. cinxia. This was confirmed by our findings during the butterfly breeding activities carried out for over five years. Although the role of chemical cues in host finding requires further research, according to our observations the presence of only E. furibunda on larval webs of E. aurinia let us suppose that the mechanism by which E. furibunda locates its host could be based on olfactory cues emitted by feeding damage to host plants that act from afar. Similarly, the mechanism of host finding used by E. festinans could act to select its host, M. cinxia. Furthermore, we illustrate some diagnostic features of adults for the identification of the studied parasitoids.
{"title":"Associations between the larval-pupal parasitoids Erycia furibunda and E. festinans (Diptera: Tachinidae) and respectively, the sympatric and syntopic butterflies Euphydryas aurinia provincialis and Melitaea cinxia (Lepidoptera: Nymphalidae)","authors":"M. Pinzari, D. Cesaroni","doi":"10.4081/jear.2020.8582","DOIUrl":"https://doi.org/10.4081/jear.2020.8582","url":null,"abstract":"Several studies on butterfly ecology and biology of Melitaeini butterflies have been carried out in the past, however the factors affecting butterfly mortality and the role of natural enemies on population dynamics are not yet fully known. Larval survival plays a key role in determining butterfly population size and distribution range; thus, knowing the sources and variation in larval mortality is essential understanding and predicting population dynamics. Butterfly larval mortality is generally ascribed to abiotic factors, predators and parasitoids (mainly Diptera and Hymenoptera). Among Diptera, tachinids parasitize primarily larval Lepidoptera. In this paper, we report the results of 5-year observations in the wild and captivity on the tachinids, Erycia furibunda and E. festinans, parasitoids of caterpillars of a population of Euphydryas aurinia spp. provincialis and Melitaea cinxia in Central Italy revealing their host specifity. The hosts, E. aurinia and M. cinxia, and parasitoids, E. furibunda and E. festinans, inhabit the same habitat and their life cycles highly overlap, nevertheless, the parasitoids maintain their host specifity: E. furibunda as parasitoid of E. aurinia; E. festinans as parasitoid of M. cinxia. This was confirmed by our findings during the butterfly breeding activities carried out for over five years. Although the role of chemical cues in host finding requires further research, according to our observations the presence of only E. furibunda on larval webs of E. aurinia let us suppose that the mechanism by which E. furibunda locates its host could be based on olfactory cues emitted by feeding damage to host plants that act from afar. Similarly, the mechanism of host finding used by E. festinans could act to select its host, M. cinxia. Furthermore, we illustrate some diagnostic features of adults for the identification of the studied parasitoids.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2020.8582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42406355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thi-Hien Dinh, Q. Le, T. Đ. Nguyen, T.Q. Nguyen, A. Ho, V. Nguyen, T. Nguyen, T. H. Hoang, V. D. Nguyen, K. Nguyen
A Vietnamese domestic plant namely Solanum nigrum (S. nigrum) was subjected to test for larvicidal activity on two majors Dengue hemorrhagic fever (DHF) vectors Aedes aegypti (Ae. aegypti) and Aedes albopictus (Ae. albopictus). The plant was processed to get infusions in hot water or extracted in ethanol. Laboratory and field larval strains of two Aedes species were exposed to the infusions and extract at increasing concentrations for one hour and followed-up intensively for up to 72 hours. The obtained results of bioassay showed larvicidal effects of extract on all mosquito strains. The effects on laboratory strain of Ae. aegypti larvae were correlated with infusions and extract concentrations. Chopped plant infusions in hot water indicated mortality up to 77.3% of larvae. Ground plant infusions killed all of exposed larvae at day 3 postexposure. Median lethal concentrations (LC50,s) of chopped and ground plant infusions were 10.25 and 7.54%, respectively. Ethanolic extract had very strong effect on experimental subjects. Within 72 hours, 100% of laboratory strain of Ae. aegypti larvae died after exposure to extract at 100 parts per million (ppm) or higher concentrations. Ethanolic plant extract showed similar larvicidal effect on field strains of Ae. aegypti and Ae. albopictus. The percentage mortality of field strains larvae reached 100% after exposure to 100 ppm of plant extract. At concentrations of 1000 ppm, 100% of exposed larvae died with 8 hours. LC50 on tested larvae was 25.07-33.60 ppm. Strong larvicidal activity of S. nigrum suggests the possible application in DHF vector control effort.
{"title":"Larvicidal activity of Vietnamese Solanum nigrum on mosquitoes Aedes aegypti and Aedes albopictus (Diptera: Culicidae)","authors":"Thi-Hien Dinh, Q. Le, T. Đ. Nguyen, T.Q. Nguyen, A. Ho, V. Nguyen, T. Nguyen, T. H. Hoang, V. D. Nguyen, K. Nguyen","doi":"10.4081/jear.2020.8866","DOIUrl":"https://doi.org/10.4081/jear.2020.8866","url":null,"abstract":"A Vietnamese domestic plant namely Solanum nigrum (S. nigrum) was subjected to test for larvicidal activity on two majors Dengue hemorrhagic fever (DHF) vectors Aedes aegypti (Ae. aegypti) and Aedes albopictus (Ae. albopictus). The plant was processed to get infusions in hot water or extracted in ethanol. Laboratory and field larval strains of two Aedes species were exposed to the infusions and extract at increasing concentrations for one hour and followed-up intensively for up to 72 hours. The obtained results of bioassay showed larvicidal effects of extract on all mosquito strains. The effects on laboratory strain of Ae. aegypti larvae were correlated with infusions and extract concentrations. Chopped plant infusions in hot water indicated mortality up to 77.3% of larvae. Ground plant infusions killed all of exposed larvae at day 3 postexposure. Median lethal concentrations (LC50,s) of chopped and ground plant infusions were 10.25 and 7.54%, respectively. Ethanolic extract had very strong effect on experimental subjects. Within 72 hours, 100% of laboratory strain of Ae. aegypti larvae died after exposure to extract at 100 parts per million (ppm) or higher concentrations. Ethanolic plant extract showed similar larvicidal effect on field strains of Ae. aegypti and Ae. albopictus. The percentage mortality of field strains larvae reached 100% after exposure to 100 ppm of plant extract. At concentrations of 1000 ppm, 100% of exposed larvae died with 8 hours. LC50 on tested larvae was 25.07-33.60 ppm. Strong larvicidal activity of S. nigrum suggests the possible application in DHF vector control effort.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2020.8866","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42267762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The occurrence in Calabria (southern Italy) of Thaumastocoris peregrinus Carpintero and Dellapé, 2006, alien pest on various species of Eucalyptus, native to Australia, is reported for the first time. The first specimens were collected in September 2019; later the authors found feeding damage on the leaves, eggs batches and the various stages of the insect in various localities in Reggio Calabria (Italy). Notes on its distribution and biology are reported.
{"title":"First record from Calabria (southern Italy) of the “bronze bug” Thaumastocoris peregrinus Carpintero and Dellapé, 2006, alien Eucalyptus pest native to Australia (Hemiptera: Heteroptera: Thaumastocoridae)","authors":"E. Castiglione, F. Manti, C. Bonsignore","doi":"10.4081/jear.2020.8879","DOIUrl":"https://doi.org/10.4081/jear.2020.8879","url":null,"abstract":"The occurrence in Calabria (southern Italy) of Thaumastocoris peregrinus Carpintero and Dellapé, 2006, alien pest on various species of Eucalyptus, native to Australia, is reported for the first time. The first specimens were collected in September 2019; later the authors found feeding damage on the leaves, eggs batches and the various stages of the insect in various localities in Reggio Calabria (Italy). Notes on its distribution and biology are reported.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2020.8879","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46353291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The survey of Heteroptera carried out in 2016 along the nature path “Bosco dei Tigli” (Lime Trees Wood) in Piode (Piedmont, 900 m a.s.l.), highlighted 74 species, belonging to 68 genera in total. The number of species of each family well represents the Italian Heteroptera composition, with the prevalence of Miridae and Pentatomidae. The Miridae Criocoris nigripes var. apicalis (Fieber, 1861), a new record in the Alps, and Dicyphus flavoviridis (Tamanini, 1949), an Italian endemic taxon, were collected. Atractotomus parvulus (Reuter, 1878) and Orthotylus viridinervis (Kirschbaum, 1856) were recorded for the first time in Piedmont. Piode is the most Northern area, with Sondrio, where the Mediterranean Lygaeidae Oxycarenus lavaterae (Fabricius, 1784) was found.
2016年在Piode (Piedmont, a.s.l 900 m)的“Bosco dei Tigli”(Lime Trees Wood)自然路径上进行的异翅目昆虫调查，共发现74种，隶属68属。各科种数较好地反映了意大利异翅目的组成，以密翅科和蝽科为主。收集了阿尔卑斯地区新记录的Miridae Criocoris nigripes var. apicalis (Fieber, 1861)和意大利特有分类群Dicyphus flavviridis (Tamanini, 1949)。parvulus (Reuter, 1878)和Orthotylus viridinervis (Kirschbaum, 1856)均为皮埃蒙特地区首次记录。Piode是最北部的地区，与Sondrio一起，在那里发现了地中海Lygaeidae oxycararenus lavaterae (Fabricius, 1784)。
{"title":"Heteroptera collected in Valsesia, Northern Italy","authors":"P. Dioli, C. Boggio, L. Limonta","doi":"10.4081/jear.2019.8752","DOIUrl":"https://doi.org/10.4081/jear.2019.8752","url":null,"abstract":"The survey of Heteroptera carried out in 2016 along the nature path “Bosco dei Tigli” (Lime Trees Wood) in Piode (Piedmont, 900 m a.s.l.), highlighted 74 species, belonging to 68 genera in total. The number of species of each family well represents the Italian Heteroptera composition, with the prevalence of Miridae and Pentatomidae. The Miridae Criocoris nigripes var. apicalis (Fieber, 1861), a new record in the Alps, and Dicyphus flavoviridis (Tamanini, 1949), an Italian endemic taxon, were collected. Atractotomus parvulus (Reuter, 1878) and Orthotylus viridinervis (Kirschbaum, 1856) were recorded for the first time in Piedmont. Piode is the most Northern area, with Sondrio, where the Mediterranean Lygaeidae Oxycarenus lavaterae (Fabricius, 1784) was found.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":"51 1","pages":"82-86"},"PeriodicalIF":0.0,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2019.8752","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43979376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Jucker, M. G. Leonardi, I. Rigamonti, D. Lupi, S. Savoldelli
The growing population and, consequently, the demand for food, has led to an increase in the agro-food activities, causing irreversible exploitation of natural resources. The use of insects for the management and recycling of by-products of the agro-food industry and for the production of proteins is growing. The Diptera Hermetia illucens is of particular interest as larvae are able to grow rapidly on numerous organic matters and are rich in proteins and fats. The identification of a low-cost and low-impact substrate suitable for the mass rearing of H. illucens is consequently of great interest. In this study, we evaluated the suitability of brewery wastes, spent grain and trub (used separately or mixed), as rearing substrate for the larvae. We evaluated the effect of these diets on preimmaginal performance (survival, developmental time, and weight reached) and adult traits (sex-ratio, dimension, and female fertility). As a result, the different substrates significantly impacted different biological traits. Best results, both for larvae and adults, were reported when the brewery wastes were provided together, leading to similar results obtained in a control diet and comparable to other previous studies. We conclude that brewery by-products can be valuable substrate for larval growth and in this way can be efficiently recycled and valorised.
{"title":"Brewery’s waste streams as a valuable substrate for Black Soldier Fly Hermetia illucens (Diptera: Stratiomyidae)","authors":"C. Jucker, M. G. Leonardi, I. Rigamonti, D. Lupi, S. Savoldelli","doi":"10.4081/jear.2019.8876","DOIUrl":"https://doi.org/10.4081/jear.2019.8876","url":null,"abstract":"The growing population and, consequently, the demand for food, has led to an increase in the agro-food activities, causing irreversible exploitation of natural resources. The use of insects for the management and recycling of by-products of the agro-food industry and for the production of proteins is growing. The Diptera Hermetia illucens is of particular interest as larvae are able to grow rapidly on numerous organic matters and are rich in proteins and fats. The identification of a low-cost and low-impact substrate suitable for the mass rearing of H. illucens is consequently of great interest. In this study, we evaluated the suitability of brewery wastes, spent grain and trub (used separately or mixed), as rearing substrate for the larvae. We evaluated the effect of these diets on preimmaginal performance (survival, developmental time, and weight reached) and adult traits (sex-ratio, dimension, and female fertility). As a result, the different substrates significantly impacted different biological traits. Best results, both for larvae and adults, were reported when the brewery wastes were provided together, leading to similar results obtained in a control diet and comparable to other previous studies. We conclude that brewery by-products can be valuable substrate for larval growth and in this way can be efficiently recycled and valorised.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2019.8876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47363502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For the first time, 13 species are reported for the Lepidoptera fauna of Lampedusa Island. Bifascioides leucomelanella and Ceutolopha isidis are new to Italy. The presence of Azanus ubaldus is confirmed.
{"title":"Contribution to the knowledge of Lepidoptera fauna of Lampedusa: Bifascioides leucomelanella (Rebel, 1917) and Ceutholopha isidis (Zeller, 1867) (Lepidoptera) new to Italy","authors":"M. Pinzari","doi":"10.4081/jear.2019.8031","DOIUrl":"https://doi.org/10.4081/jear.2019.8031","url":null,"abstract":"For the first time, 13 species are reported for the Lepidoptera fauna of Lampedusa Island. Bifascioides leucomelanella and Ceutolopha isidis are new to Italy. The presence of Azanus ubaldus is confirmed.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2019.8031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49388352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
From pieces of olive tree leaves with only egg clusters of Macrolenes dentipes (Olivier) (Coleoptera: Chrysomelidae), specimens of the trichogrammatid Bloodiella andalusiaca Nowicki (1935) emerged. This is the first record for the genus and the species from Italy. The original description of B. andalusiaca is reviewed and new characters are added. Hosts of this egg parasitoid are unknown, but our observations suggest that M. dentipes is a very possible candidate.
{"title":"First record of Bloodiella Nowicki, 1935 (Hymenoptera: Trichogrammatidae) from Italy","authors":"G. Viggiani, F. Filella","doi":"10.4081/jear.2019.8616","DOIUrl":"https://doi.org/10.4081/jear.2019.8616","url":null,"abstract":"From pieces of olive tree leaves with only egg clusters of Macrolenes dentipes (Olivier) (Coleoptera: Chrysomelidae), specimens of the trichogrammatid Bloodiella andalusiaca Nowicki (1935) emerged. This is the first record for the genus and the species from Italy. The original description of B. andalusiaca is reviewed and new characters are added. Hosts of this egg parasitoid are unknown, but our observations suggest that M. dentipes is a very possible candidate.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/jear.2019.8616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43036208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Defilippo, A. Grisendi, S. Savoldelli, D. Torri, M. Dottori, P. Bonilauri
Immature development times of the Indian meal moth, Plodia interpunctella were studied in the laboratory at four different constant temperatures (20, 23, 25, 27°C) reared on a standard diet (D1) and chocolate (D2). The minimal duration of development from oviposition to adult emergence was inversely related to temperature, ranging from 2.3±0.36 days to 50.5±0.5 days for D1 and from 36.7±0.53 days to 106.73±1.10 days for D2 for 27°C and 20°C, respectively. The minimum development threshold (tL), obtained from linear regression model of the development rates at the four studied constant temperature regimes, for total immature development is 15.3°C and 17.1°C for D1 and D2, respectively and the accumulated degree days (ADD) for P. interpunctella is 249.51°C for D1 and 358.4°C for D2 above the threshold.
{"title":"Effect of temperature and diet on Plodia interpunctella (Lepidoptera: Pyralidae) development with special reference to Isomegalen diagram and accumulated degree days","authors":"F. Defilippo, A. Grisendi, S. Savoldelli, D. Torri, M. Dottori, P. Bonilauri","doi":"10.4081/JEAR.2019.7855","DOIUrl":"https://doi.org/10.4081/JEAR.2019.7855","url":null,"abstract":"Immature development times of the Indian meal moth, Plodia interpunctella were studied in the laboratory at four different constant temperatures (20, 23, 25, 27°C) reared on a standard diet (D1) and chocolate (D2). The minimal duration of development from oviposition to adult emergence was inversely related to temperature, ranging from 2.3±0.36 days to 50.5±0.5 days for D1 and from 36.7±0.53 days to 106.73±1.10 days for D2 for 27°C and 20°C, respectively. The minimum development threshold (tL), obtained from linear regression model of the development rates at the four studied constant temperature regimes, for total immature development is 15.3°C and 17.1°C for D1 and D2, respectively and the accumulated degree days (ADD) for P. interpunctella is 249.51°C for D1 and 358.4°C for D2 above the threshold.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/JEAR.2019.7855","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48356580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To verify the presence in Italy of Delplanqueia inscriptella, today accepted as a separate species from D. dilutella, we carried out the study of the historical collections of Carlo Prola and Federico Hartig and new material that was recently collected in central Italy. Both species are present in continental Italy and Sicily while only D. inscriptella in Sardinia. The bibliographic reconstruction and the examination of the Hartig’s specimens that revealed the presence of Delplanqueia cortella, for a long time considered a corso-sardinian endemism, is not reflected: the specimens in Hartig’s collection with P. cortella placement are indeed Pempeliella matilella.
{"title":"Genus Delplanqueia Leraut, 2001 and D. inscriptella (Duponchel, 1836) (Lepidoptera, Pyralidae) in Italy","authors":"M. Pinzari","doi":"10.4081/JEAR.2019.8168","DOIUrl":"https://doi.org/10.4081/JEAR.2019.8168","url":null,"abstract":"To verify the presence in Italy of Delplanqueia inscriptella, today accepted as a separate species from D. dilutella, we carried out the study of the historical collections of Carlo Prola and Federico Hartig and new material that was recently collected in central Italy. Both species are present in continental Italy and Sicily while only D. inscriptella in Sardinia. The bibliographic reconstruction and the examination of the Hartig’s specimens that revealed the presence of Delplanqueia cortella, for a long time considered a corso-sardinian endemism, is not reflected: the specimens in Hartig’s collection with P. cortella placement are indeed Pempeliella matilella.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4081/JEAR.2019.8168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41457799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aedes mosquitoes belong to a subgenus of Stegomyia (Diptera: Culicidae), which are dengue and chigunkunya vectors, including Aedes aegypti, Ae. albopictus, and Ae. scutellaris, and have a worldwide distribution in tropical and subtropical regions. Species identification of mosquitoes is challenging yet necessary to select appropriate control methods for each species. In this study, we have analyzed the different wing components for identification to find the optimal outline for Aedes mosquito analysis by an outline-based GM approach. Two internal and external outlines of the wing were considered for Aedes species identification in this study. A total of 90 Aedes wings were analysed, divided into 30 wings per species (Ae. aegypti, Ae. albopictus, and Ae. scutellaris). The results showed that the mean size of Ae. albopictus had the largest wings, followed by Ae. Aegypti, and Ae. scutellaris, respectively, in all the internal and external outlines. While, the shape analysis in the three outlines were expressed by the factor map, the statistical difference and cross-validated classification scores indicated the ability of the outline-based GM approach to distinguish species of Aedes mosquitoes. The external outline has a relatively good range of cross-validated classification scores compared to the other internal outlines. The results of this research reveal the suitability of this external outline to identify species of Aedes vectors in Thailand.
{"title":"Comparative analysis of the internal and external outlines of wings for an outline-based geometric morphometric approach to distinguish three Aedes mosquitoes (Diptera: Culicidae) in Thailand","authors":"T. Chaiphongpachara, S. Laojun","doi":"10.4081/JEAR.2019.8133","DOIUrl":"https://doi.org/10.4081/JEAR.2019.8133","url":null,"abstract":"Aedes mosquitoes belong to a subgenus of Stegomyia (Diptera: Culicidae), which are dengue and chigunkunya vectors, including Aedes aegypti, Ae. albopictus, and Ae. scutellaris, and have a worldwide distribution in tropical and subtropical regions. Species identification of mosquitoes is challenging yet necessary to select appropriate control methods for each species. In this study, we have analyzed the different wing components for identification to find the optimal outline for Aedes mosquito analysis by an outline-based GM approach. Two internal and external outlines of the wing were considered for Aedes species identification in this study. A total of 90 Aedes wings were analysed, divided into 30 wings per species (Ae. aegypti, Ae. albopictus, and Ae. scutellaris). The results showed that the mean size of Ae. albopictus had the largest wings, followed by Ae. Aegypti, and Ae. scutellaris, respectively, in all the internal and external outlines. While, the shape analysis in the three outlines were expressed by the factor map, the statistical difference and cross-validated classification scores indicated the ability of the outline-based GM approach to distinguish species of Aedes mosquitoes. The external outline has a relatively good range of cross-validated classification scores compared to the other internal outlines. The results of this research reveal the suitability of this external outline to identify species of Aedes vectors in Thailand.","PeriodicalId":37777,"journal":{"name":"Journal of Entomological and Acarological Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47474604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：