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The genus Cucujus Fabricius, 1775 is widely distributed throughout the Holarctic region, and contains 28 species and three subspecies with 16 species and two subspecies of them are recorded in China. In the present paper, we describe an extraordinary new species, Cucujus zhengyucheni sp. nov., which has three distinct longitudinal carinae on each elytron, a character only appears on C. costatus Zhao & Zhang, 2019, also from China. Moreover, the spermatheca of female C. costatus is provided for the first time, and both close species are well compared by the genitalia of both sexes.

A new species of Trichoderes Chevrolat, 1843 from Honduras is described and illustrated. An updated key to species of the genus is presented, along with photographs of all species currently included in the genus.

The first Paleogene representative of the relictual family Nosodendridae is described and illustrated based on an inclusion in Eocene Baltic amber. The new species, Nosodendron (Dendrodipnis) andrushchenkoi sp. nov., is placed in the extant genus Nosodendron and compared with both extant and fossil congeners.

A new subgenus Afrochoroterpes subgen. nov. is established for two South African species, Choroterpes (Afrochoroterpes) nigrescens Barnard 1932 and Choroterpes (Afrochoroterpes) ndebele Agnew 1962. Larvae, subimagines, imagines and eggs of these two species are redescribed based on reared material from Western Cape province. Eggs of Afrochoroterpes sharply differ from eggs of all other known representatives of Choroterpes Eaton 1881. Egg structure of other Choroterpes s. l. (including taxa known as subgenera or genera Choroterpes s. str., Euthraulus Barnard 1932, Monochoroterpes Kluge & Jacobus 2015, Cryptopenella Gillies 1951, Neochoroterpes Allen 1974 and Dilatognathus Kluge 2012) is very peculiar and can be termed Choroterpes-type. Besides Choroterpes s. l. other than Afrochoroterpes, the Choroterpes-type egg structure occurs in Megaglena Peters & Edmunds 1970 and Klugephlebia Selvakumar et al. 2016.

The Iranian species of Norbanus Walker (Hymenoptera: Pteromalidae), are reviewed. Four new species, Norbanus brachymarginalis Rahmani & Rakhshani sp. nov., Norbanus brevispiculus Rahmani & Rakhshani sp. nov., Norbanus densipilosus Rahmani & Rakhshani sp. nov., and Norbanus flavitibialis Rahmani & Rakhshani sp. nov. are described from various regions in eastern (Sistan-o Baluchestan and North Khorasan), southeastern (Kerman), and western (Kermanshah) provinces of Iran. A key to the 14 Iranian and Iraqi species of Norbanus based on females is given.

The recent description of Cyphopisthes erlangshen Wang, 2025 from Guangxi (China) is discussed and Cyphopisthes dohertyi (Paulian, 1942) is recorded from Guangxi for the first time. The peculiar aedeagal morphology of that species is also described for the first time. The female of Madrasostes lini Wang, 2025 is described and the generic placement of the species is discussed.

The Apalachicola Redhorse is a species that has been long known amongst North American ichthyologists and is herein described as Moxostoma antelunare new species. The Apalachicola Redhorse differs from other gray-tailed Redhorses based on a combination of gill raker count, lateral line scale count, and caudal peduncle depth and the species is supported by two potential osteological autapomorphies: a V-shaped notch between the anteromedial and posteromedial processes of the cleithrum and the anterolateral and posteromedial laminae of the hyomandibula of equal size. The Apalachicola Redhorse occupies much of the Apalachicola River drainage of Georgia, Alabama, and Florida as well as Econfina Creek in the St. Andrews Bay drainage of Florida.

The dwarf red brocket, Mazama rufina (Pucheran, 1851) is a small deer with a fragmented distribution in the montane forests of the Andes of Peru, Ecuador, Colombia, and Venezuela. Little is known about the phylogenetic relationships and the haplotype diversity of its populations, which show distribution gaps. Here we elucidate the phylogenetic relationships of M. rufina and other neotropical deer using mitochondrial data, and analyze genetic geographic variation of this taxon by using haplotype networks of the Cyt-b gene from northern South America. Our analyses recovered M. rufina as independent clade that is not part of Mazama, and sister to a clade composed of Mazama species (except Mazama chunyi) and Odocoileus. The morphometric data of cranial traits confirms that the dwarf red brocket is among the smallest species of deer in South America, only overlapping with small cis-Andean gray brockets (genus Passalites). Based on these results, we provide a new generic classification for this taxon by placing the dwarf red brocket in a new genus found only in the Andes of northern South America. The Cyt-b haplotype network of the dwarf red brocket showed a strong geographic structure caused by the interplay of Cordilleras and lowland river valleys. The genetic distances between the geographic groups were between 1.4 % (Central Cordillera of Colombia vs. Andes of Ecuador) to 2.52 % (Mrida Cordillera vs. Ecuador). The species range using Extent of Occurrence (EOO) and Area of Occupancy (AOO) was 443,764 and 796 km2, respectively, suggesting that the species could be listed as Near Threatened. However, additional information on population changes and susceptibility to habitat transformation is crucial to evaluate whether the dwarf red brocket can be deemed Vulnerable along its distribution. Compared with previous distribution hypotheses, the revised map suggests less extensive distribution gaps in Colombia and highlights priority areas for future sampling in Colombia, Ecuador, and Venezuela.

Generic characters of Phymatocera Dahlbom, 1835 are detailed. The following five Japanese species of Phymatocera are described or redescribed and divided into two species groups: Species group of P. aterrima: P. membra Wei, 2002 from Japan (Kyushu) and China (Henan), P. nipponica Togashi, 1958 from Japan (Shikotan Island, Rishiri Island, Hokkaido, Honshu, Shikoku, Kyushu, Tsushima Island), Korea and Russia (Sakhalin), and P. satoi Hara, sp. nov. from Japan (Honshu); Species group of P. fumipennis: P. fuscata (Togashi, 1984) comb. nov. (= Rhadinoceraea fuscata Togashi, 1984) from Japan (Honshu), and P. peregrinator (Malaise, 1931) comb. nov. (= Neotomostethus peregrinator Malaise, 1931) from Japan (Hokkaido, Honshu) and Russia (Kamchatka). A key to these five Japanese species is given. Phymatocera hokkaidonis Togashi, 2004 syn. nov. is synonymized with N. peregrinator. A lectotype is designated for Neotomostethus peregrinator Malaise, 1931. New distributional records are P. membra from Honshu, Japan, P. nipponica from Rishiri Island and Tsushima Island, Japan, and P. peregrinator comb. nov. from Honshu, Japan. The genus Rhadinoceraea Konow, 1886 is excluded from the fauna of Japan, because the only known Japanese species of the genus, R. fuscata, is transferred to Phymatocera. The following new combinations are proposed for two Chinese species: Rhadinoceraea foveata (Wei, 1998) comb. nov. (= Phymatocera foveata Wei, 1998, in Nie & Wei 1998) and Rhadinoceraea sinica (Wei, 2002) comb. nov. (= Phymatocera sinica Wei, 2002).

Four new species of Promalactis Meyrick, 1908 are described and illustrated from China: P. anisilobata Wang sp. nov., P. microdonta Wang sp. nov., P. subaequalis Wang sp. nov. and P. trijugasymmetra Wang sp. nov. In addition, the female of P. saligna Du & Wang, 2012 is reported for the first time. Diagnostic characters for distinguishing the new species are given.