Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.771
K. Karthika, K. Jose
Only three species of Annandaliella are known from the Western Ghats of Kerala, A. travnacorica Hirst 1909, A. ernakulamensis Jose and Sebastian 2018, A. pectinifera Gravely 1935. A. travnacoricais distinguished by its primary apophysis on first leg, which has a horn-like projection with a pointed black spine at the tibial end. The presence of a tibial apophysis with a thick black spine distinguishes it from A. ernakulamensis and A. pectinifera. A. travancorica has previously been reported in Kerala’s Travancore, Kozikode, and Thrissur. This is the first report from Peechi Wildlife Sanctuary.
在喀拉拉邦的西高止山脉，只有三种Annandaliella是已知的，A. travnacorica Hirst 1909, A. ernanulamensis Jose and Sebastian 2018, A. pectinifera格拉夫利1935。带甲棘猴的特征是其第一腿上的初级突骨，在胫骨末端有角状突起和黑色的尖棘。胫骨突和粗黑棘的存在将其与a. erakulamensis和a. pectinifera区分开来。以前曾在喀拉拉邦的特拉凡科、Kozikode和Thrissur报道过特拉凡科螨。这是皮奇野生动物保护区的第一份报告。
{"title":"Distributional record of Annandaliella travancorica Hirst 1909, (Araneae: Theraphosidae) from Western Ghats of Kerala, India","authors":"K. Karthika, K. Jose","doi":"10.33307/entomon.v47i3.771","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.771","url":null,"abstract":"Only three species of Annandaliella are known from the Western Ghats of Kerala, A. travnacorica Hirst 1909, A. ernakulamensis Jose and Sebastian 2018, A. pectinifera Gravely 1935. A. travnacoricais distinguished by its primary apophysis on first leg, which has a horn-like projection with a pointed black spine at the tibial end. The presence of a tibial apophysis with a thick black spine distinguishes it from A. ernakulamensis and A. pectinifera. A. travancorica has previously been reported in Kerala’s Travancore, Kozikode, and Thrissur. This is the first report from Peechi Wildlife Sanctuary.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86178044","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.758
A. Pervez, Rajesh Kumar
Ladybird beetles are predatory insects, which consumes everal insect pests and have immense biocontrol potential, particularly against aphids. In prey scarcity, they resort to intraguild predation (IGP) by consuming immature stages of other heterospecific ladybirds. A laboratory experiment was performed to quantify the incidence of IGP of first and second larval instars by older instars and adults of two co-occurring ladybird species, Propylea dissecta and Menochilus sexmaculatus. IGP of first and second larval instars increased significantly with increase in the larval stages followed by adult males and females. Predatory stages of M. sexmaculatus were more potential intraguild predators than those of P. dissecta. Among adults, the female consumed a greater number ofearly and weaker heterospecific instars. The presence of dorsal spines and hair on the larva of M. sexmaculatusprovided aposematism that helps in defense against superior heterospecific larvae thereby enabling its successful establishment and distribution. M. sexmaculatus could act as an intraguild predator in the fields and may contribute in declining the population density of P. dissecta during aphid-prey scarcity.
{"title":"Intraguild predation of inferior larval instars of two ladybirds Menochilus sexmaculatus (Fabricius) and Propylea dissecta (Mulsant) (Coleoptera:Coccinellidae)","authors":"A. Pervez, Rajesh Kumar","doi":"10.33307/entomon.v47i3.758","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.758","url":null,"abstract":"Ladybird beetles are predatory insects, which consumes everal insect pests and have immense biocontrol potential, particularly against aphids. In prey scarcity, they resort to intraguild predation (IGP) by consuming immature stages of other heterospecific ladybirds. A laboratory experiment was performed to quantify the incidence of IGP of first and second larval instars by older instars and adults of two co-occurring ladybird species, Propylea dissecta and Menochilus sexmaculatus. IGP of first and second larval instars increased significantly with increase in the larval stages followed by adult males and females. Predatory stages of M. sexmaculatus were more potential intraguild predators than those of P. dissecta. Among adults, the female consumed a greater number ofearly and weaker heterospecific instars. The presence of dorsal spines and hair on the larva of M. sexmaculatusprovided aposematism that helps in defense against superior heterospecific larvae thereby enabling its successful establishment and distribution. M. sexmaculatus could act as an intraguild predator in the fields and may contribute in declining the population density of P. dissecta during aphid-prey scarcity.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84772328","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.762
Aneeesh V Mathew, M. Joseph
Olpium digitum Murthy and Ananthakrishnan, 1977 is redescribed with first description of the female and updating its distribution in India. A new subjective synonymy is being proposed; Olpium tibium Sivaraman, 1980=O. digitum, Murthy and Ananthakrishnan, 1977. Supplementary description for O. gladiatum Murthy and Ananthakrishnan, 1977 is reported.
Olpium digitum Murthy and Ananthakrishnan, 1977重新描述了对女性的首次描述，并更新了其在印度的分布。一个新的主观同义词正在被提出;Olpium tibium Sivaraman, 1980= 0。digitum, Murthy和Ananthakrishnan, 1977。报道了O. gladiatum Murthy and Ananthakrishnan, 1977的补充描述。
{"title":"New synonymy and redescription of two species from the Pseudoscorpion genus Olpium L. Koch, 1873 (Arachnida: Pseudoscorpiones: Olpiidae) in India","authors":"Aneeesh V Mathew, M. Joseph","doi":"10.33307/entomon.v47i3.762","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.762","url":null,"abstract":"Olpium digitum Murthy and Ananthakrishnan, 1977 is redescribed with first description of the female and updating its distribution in India. A new subjective synonymy is being proposed; Olpium tibium Sivaraman, 1980=O. digitum, Murthy and Ananthakrishnan, 1977. Supplementary description for O. gladiatum Murthy and Ananthakrishnan, 1977 is reported.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83702290","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.768
N. Babu, G. Prasad
The study aims to understand the species composition and habitat preferences of the spiders of the family Tetragnathidae in rice agroecosystem of Kuttanad. Surveys were carried out for a period of five months from July to November 2020. A total of thirteen tetragnathid species were collected from paddy fields and their nearby areas following organic way (do not use any pesticide) and a total of nine species collected from rice fields with its surroundings which use chemical pesticides. It was observed that the ecological guild structure of these spiders was based on foraging behaviour in relation to the height of the rice plant.
{"title":"Species diversity and vertical stratification of spiders of the family Tetragnathidae Menge, 1866 (Araneae) in different paddy farming practises at Kuttanad, Kerala, India","authors":"N. Babu, G. Prasad","doi":"10.33307/entomon.v47i3.768","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.768","url":null,"abstract":"The study aims to understand the species composition and habitat preferences of the spiders of the family Tetragnathidae in rice agroecosystem of Kuttanad. Surveys were carried out for a period of five months from July to November 2020. A total of thirteen tetragnathid species were collected from paddy fields and their nearby areas following organic way (do not use any pesticide) and a total of nine species collected from rice fields with its surroundings which use chemical pesticides. It was observed that the ecological guild structure of these spiders was based on foraging behaviour in relation to the height of the rice plant.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"157 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74824115","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.773
A. Asima, G. Prasad
A survey of spiders conducted for a period of two seasons in Shendurney wildlife sanctuary revealed a total of 38 species. Nephila pilipes, Cyclosa hexatuberculata and Cyclosa bifida were the common species. Checklist of Araneid spiders is prepared.
{"title":"Araneid spiders of Shendurney wildlife sanctuary in southern Western Ghats, India","authors":"A. Asima, G. Prasad","doi":"10.33307/entomon.v47i3.773","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.773","url":null,"abstract":"A survey of spiders conducted for a period of two seasons in Shendurney wildlife sanctuary revealed a total of 38 species. Nephila pilipes, Cyclosa hexatuberculata and Cyclosa bifida were the common species. Checklist of Araneid spiders is prepared.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87531901","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.756
J. Srikanth
Differential aggregation of aphids on host plant parts may indicate site-specific optimal densities for efficient utilization of plant parts, besides the usual inference of preferential colonization. Differential densities of aphids within the plant were studied using the legume aphid Aphis craccivora Koch in cowpea Vigna unguiculata (L.) Walp. ssp. unguiculata. In field-collected infested sample stems and pods (n=60), colonies were demarcated, aphid colony size, length and circumference measured, and colony area and density calculated. The results indicated that colony dimensions and colony size were significantly higher in pod than in stem whereas colony density did not differ significantly between the two plant parts. Colony density was significantly higher in leaflets of top most leaf than in leaflets of top 2nd or 3rd leaf. Overall, the four plant parts could be graded in the descending order as stem>pod>leaflets of top most leaf> leaflets of top 2nd or 3rd leaf for colony density. Significant positive curvilinear and linear relationship between colony size and colony density in both stem and pod indicated that A. craccivora showed a propensity to spread out colonies at low populations but tended to compact them with a rise in population levels. Identical colony density in stem and pod suggested that the aphid may not require differential densities to overcome host defenses or utilize food from these two plant parts. In top most leaf and top 2nd or 3rd leaf, finite leaflet size apparently limits proliferation of the aphid. Higher density on top immature leaves could be more an outcome of nutritional suitability than the need to overcome host defenses. Variable colony densities on the four parts of V. unguiculata indicated differential optimal densities.
{"title":"Do aphids maintain differential densities on plant parts? A case study with Aphis craccivora Koch (Hemiptera: Aphididae)","authors":"J. Srikanth","doi":"10.33307/entomon.v47i3.756","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.756","url":null,"abstract":"Differential aggregation of aphids on host plant parts may indicate site-specific optimal densities for efficient utilization of plant parts, besides the usual inference of preferential colonization. Differential densities of aphids within the plant were studied using the legume aphid Aphis craccivora Koch in cowpea Vigna unguiculata (L.) Walp. ssp. unguiculata. In field-collected infested sample stems and pods (n=60), colonies were demarcated, aphid colony size, length and circumference measured, and colony area and density calculated. The results indicated that colony dimensions and colony size were significantly higher in pod than in stem whereas colony density did not differ significantly between the two plant parts. Colony density was significantly higher in leaflets of top most leaf than in leaflets of top 2nd or 3rd leaf. Overall, the four plant parts could be graded in the descending order as stem>pod>leaflets of top most leaf> leaflets of top 2nd or 3rd leaf for colony density. Significant positive curvilinear and linear relationship between colony size and colony density in both stem and pod indicated that A. craccivora showed a propensity to spread out colonies at low populations but tended to compact them with a rise in population levels. Identical colony density in stem and pod suggested that the aphid may not require differential densities to overcome host defenses or utilize food from these two plant parts. In top most leaf and top 2nd or 3rd leaf, finite leaflet size apparently limits proliferation of the aphid. Higher density on top immature leaves could be more an outcome of nutritional suitability than the need to overcome host defenses. Variable colony densities on the four parts of V. unguiculata indicated differential optimal densities.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84827049","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.755
S. Shanas, K. Anju, K. Mashhoor
A new species of cavity nesting honey bees, Apis karinjodian n. sp., endemic to the Western Ghats biodiversity hotspot is described and illustrated. Apis indica Fabricius, 1798 status restored is resurrected from synonymy with Apis cerana Fabricius, 1793. Key to distinguish the three native cavity nesting honey bee species occurring in the Indian subcontinent viz., Apis cerana Fabricius, 1793, Apis indica Fabricius, 1798 and Apis karinjodian n. sp. is provided. Distribution map is given for the native cavity nesting Apis species of the Indian subcontinent. The morphological description of the new species is supplemented with molecular and behavioral information. Radio-Medial Index (RMI), a new measure for species discrimination in Apis, is proposed. South India is proposed as the center of origin of the European honeybee, Apis mellifera Linnaeus, 1758.
描述并说明了西高止山脉生物多样性热点地区特有的一种新的腔巢蜜蜂——Apis karinjodian n. sp。api indica Fabricius, 1798状态恢复由api cerana Fabricius, 1793的同义词复活。本文给出了印度次大陆三种本土腔巢蜜蜂(Apis cerana Fabricius, 1793)、Apis indica Fabricius, 1798和Apis karinjodian n. sp)的区分关键。给出了印度次大陆本地腔巢api的分布图。新种的形态描述补充了分子和行为信息。提出了一种新的api物种鉴别方法——无线电媒介指数(RMI)。南印度被认为是欧洲蜜蜂(林奈，1758年)的起源中心。
{"title":"Identity of cavity nesting honey bees of the Indian subcontinent with description of a new species (Hymenoptera: Apidae: Apinae: Apini: Apis)","authors":"S. Shanas, K. Anju, K. Mashhoor","doi":"10.33307/entomon.v47i3.755","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.755","url":null,"abstract":"A new species of cavity nesting honey bees, Apis karinjodian n. sp., endemic to the Western Ghats biodiversity hotspot is described and illustrated. Apis indica Fabricius, 1798 status restored is resurrected from synonymy with Apis cerana Fabricius, 1793. Key to distinguish the three native cavity nesting honey bee species occurring in the Indian subcontinent viz., Apis cerana Fabricius, 1793, Apis indica Fabricius, 1798 and Apis karinjodian n. sp. is provided. Distribution map is given for the native cavity nesting Apis species of the Indian subcontinent. The morphological description of the new species is supplemented with molecular and behavioral information. Radio-Medial Index (RMI), a new measure for species discrimination in Apis, is proposed. South India is proposed as the center of origin of the European honeybee, Apis mellifera Linnaeus, 1758.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"149 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85612853","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.775
Anitha A. Abraham, M. Joseph, Lidiya Francis
Studies were undertaken on the antibacterial activity of spider silk against bacterial strains, using egg case silk of Parawixia dehaani (Doleschall, 1859) and web silk of Pholcus phalangioides (Fuesslin, 1775). Both silk types inhibited gram negative bacteria more than gram positive bacteria. The egg case silk of P. dehaani showed more antimicrobial activity than the web silk of P. phalangioides. The egg case silk brought about 26.05 per cent inhibition against E. coli, compared to a 22.7 per cent inhibition for B. subtilis. A linear association was found between the volume of silk extract and the percentage of inhibition.The percentage of inhibition against E. coli increased from 5.13 to 26.05 per cent as the volume rose from 20 to 100 µl. in P. dehaani.
{"title":"Spider silk as a potential antibiotic substitute","authors":"Anitha A. Abraham, M. Joseph, Lidiya Francis","doi":"10.33307/entomon.v47i3.775","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.775","url":null,"abstract":"Studies were undertaken on the antibacterial activity of spider silk against bacterial strains, using egg case silk of Parawixia dehaani (Doleschall, 1859) and web silk of Pholcus phalangioides (Fuesslin, 1775). Both silk types inhibited gram negative bacteria more than gram positive bacteria. The egg case silk of P. dehaani showed more antimicrobial activity than the web silk of P. phalangioides. The egg case silk brought about 26.05 per cent inhibition against E. coli, compared to a 22.7 per cent inhibition for B. subtilis. A linear association was found between the volume of silk extract and the percentage of inhibition.The percentage of inhibition against E. coli increased from 5.13 to 26.05 per cent as the volume rose from 20 to 100 µl. in P. dehaani.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84092965","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.765
Z.L. Sheetal, P. Madhuri, K. Hemant
Among the varied aquatic and terrestrial invertebrates diversity of mangrove ecosystem, spiders are considered to be an important bioindicators of ecological health. Studies on the spider diversity in the mangroves at Vikhroli, Mumbai, Maharashtra conducted resulted in the documentation of a total of 38 spider species belonging to the 33 genera under 12 families. Salticidae was found to be the dominant with 10 species from 10 genera, followed by Araneidae (9 species and 7 genera). The survey done in three mangrove zones revealed that zone II with moderate mangrove density resulted in the highest diversity (H=0.89) of spiders. Guild structure analysis revealed six different guilds. Stalkers (Salticidae and Oxyopidae) were the predominant feeding guild (34.00%). Seasonal (pre monsoon, monsoon and post monsoon) analysis showed more species diversity in the month of June to September.
{"title":"Spider (Arachnida: Araneae) diversity at Godrej mangroves, Vikhroli, Mumbai, Maharashtra, India","authors":"Z.L. Sheetal, P. Madhuri, K. Hemant","doi":"10.33307/entomon.v47i3.765","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.765","url":null,"abstract":"Among the varied aquatic and terrestrial invertebrates diversity of mangrove ecosystem, spiders are considered to be an important bioindicators of ecological health. Studies on the spider diversity in the mangroves at Vikhroli, Mumbai, Maharashtra conducted resulted in the documentation of a total of 38 spider species belonging to the 33 genera under 12 families. Salticidae was found to be the dominant with 10 species from 10 genera, followed by Araneidae (9 species and 7 genera). The survey done in three mangrove zones revealed that zone II with moderate mangrove density resulted in the highest diversity (H=0.89) of spiders. Guild structure analysis revealed six different guilds. Stalkers (Salticidae and Oxyopidae) were the predominant feeding guild (34.00%). Seasonal (pre monsoon, monsoon and post monsoon) analysis showed more species diversity in the month of June to September.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81807453","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}
Pub Date : 2022-09-30DOI: 10.33307/entomon.v47i3.763
M. Minu, M. J. Mathew, Anitha A. Abraham
The aim of the present study was to analyze the diversity of spiders across various parts of the Thattekkad Bird Sanctuary, Kerala, a tropical, semi evergreen, low-land forest located between the tributaries of the Periyarriver. Survey of the spider fauna was carried out for a period of twelve months. In total, 3286 individuals were collected from the sanctuary, which consist of 89 species of spiders under 59 genera and 18 families. Araneidae was the most abundant family. The most abundant species was Hippasa agelenoides of Lycosidae family. Spiders belonging to six feeding guilds, i.e., orb - web weavers, stalkers, ground runners, scattered line weaver foliage runners and ambushers were identified. Relative abundances of spider community strongly differed with the pre-monsoon, monsoon and post monsoon seasons. Seasonal diversity indices of Margalef richness index, Pielou’s evenness index, Shannon-Wiener and Simpson index were calculated.
{"title":"Seasonal diversity, distribution and abundance of Araneae in the Thattekkad Bird Sanctuary, Kerala, India","authors":"M. Minu, M. J. Mathew, Anitha A. Abraham","doi":"10.33307/entomon.v47i3.763","DOIUrl":"https://doi.org/10.33307/entomon.v47i3.763","url":null,"abstract":"The aim of the present study was to analyze the diversity of spiders across various parts of the Thattekkad Bird Sanctuary, Kerala, a tropical, semi evergreen, low-land forest located between the tributaries of the Periyarriver. Survey of the spider fauna was carried out for a period of twelve months. In total, 3286 individuals were collected from the sanctuary, which consist of 89 species of spiders under 59 genera and 18 families. Araneidae was the most abundant family. The most abundant species was Hippasa agelenoides of Lycosidae family. Spiders belonging to six feeding guilds, i.e., orb - web weavers, stalkers, ground runners, scattered line weaver foliage runners and ambushers were identified. Relative abundances of spider community strongly differed with the pre-monsoon, monsoon and post monsoon seasons. Seasonal diversity indices of Margalef richness index, Pielou’s evenness index, Shannon-Wiener and Simpson index were calculated.","PeriodicalId":87603,"journal":{"name":"Entomon; internationale Zeitschrift fur die gesamte Insektenkunde","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91006724","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}
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