Discovery of a new extinct spider wasp (Hymenoptera, Pompilidae) from Eocene Rovno amber.

Paleogenia waichertae Loktionov, Lelej et Perkovsky, sp. nov. is a new species of extinct spider wasps. This new species is a second record of Pompilidae from Rovno amber, third yet known species of the extinct genus Paleogenia Waichert et Pitts, 2016 and 26th known extinct species of spider wasps. Sex of the holotype of the species Paleogenia indomini Colombo et Waichert, 2023 is clarified (male not female). A key to males of Paleogenia is provided.

The type material of spider wasps (Hymenoptera, Pompilidae) deposited in the Federal Scientific Center of the East Asia Terrestrial Biodiversity, Russian Academy of Sciences, Vladivostok, Russia.

The type material of spider wasps deposited in the Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia is catalogued. In total, this includes 305 primary type specimens (31 holotypes and 274 paratypes) belonging to 62 species and 1 subspecies, described between 1962 and 2019 from Russia, Tajikistan, China, South Korea, Japan, Laos, Indonesia, and Sri Lanka. All 31 holotypes are illustrated with color photographs and black-and-white drawings. Photographs of the habitus, head, hypopygium and genitalia of three holotypes and photographs of the habitus and head of 23 holotypes are presented for the first time. References to the original description, type localities, current status, and distribution of taxa are given. Data on the labels of holotypes and paratypes with clarifications and English translations are provided.

A review of the spider wasp genus Austrosalius Turner, 1917 (Hymenoptera, Pompilidae), with the description of a new species.

The Australasian spider wasp genus Austrosalius Turner, 1917 is reviewed for the first time. The genus comprises three species, of them Austrosalius mikhailovi Loktionov, sp. nov. is described and illustrated, based on female specimens from West Papua Province of Indonesia. The genus Austrosalius is newly reported from the island of New Guinea. The generic diagnosis and a key to the species are given.

Discovery of the spider wasp genus Telostholus Haupt, 1929 (Hymenoptera, Pompilidae) in Laos, with the description of three new species.

The genus Telostholus Haupt, 1929 is newly reported from Laos, with three species which are newly described and illustrated: T. kubani Loktionov, sp. nov., T. lao Loktionov, sp. nov., and T. leleji Loktionov, sp. nov. A key to the males is given.

The spider wasp genus Telostholus Haupt, 1929 (Hymenoptera, Pompilidae) in Malaysia, with the description of four new species.

The genus Telostholus Haupt, 1929 is newly reported from Malaysia, with four species that are newly described and illustrated: T. bifasciatus Loktionov, sp. nov. (Pahang), T. clypeatus Loktionov, sp. nov. (Pahang), T. malayensis Loktionov, sp. nov. (Pahang), and T. tomentosus Loktionov, sp. nov. (Pahang). A key to the Malaysian species is given.

New remarkable species of the subgenus Stigmatodipogon Ishikawa, 1965 of the genus Dipogon Fox, 1897 (Hymenoptera: Pompilidae) from Thailand and India.

Two new species, Dipogon (Stigmatodipogon) chiangmai Loktionov, sp. nov. and D. (S.) himalayensis Loktionov, sp. nov., are described and illustrated based on females from northern Thailand and north-eastern India. The subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox is newly recorded from India (Arunachal Pradesh). An updated key to the females is provided.

Contribution to the knowledge of the subgenus Stigmatodipogon Ishikawa, 1965 of the genus Dipogon Fox, 1897 (Hymenoptera: Pompilidae).

Two new species, Dipogon (Stigmatodipogon) siam Loktionov Lelej, sp. nov. and D. (S.) wasbaueri Loktionov Lelej, sp. nov., are described and illustrated based on females from northern Thailand and Laos. The subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox is newly recorded from Thailand. An updated key to the females is provided.

The spider wasp genus Telostholus Haupt, 1929 (Hymenoptera, Pompilidae) in Indonesia, with the description of three new species.

Four species of the genus Telostholus Haupt, 1929 are reported from Indonesia, three of them are described and illustrated as new species: T. celebes Loktionov Lelej, sp. nov. (Sulawesi), T. rinjani Loktionov Lelej, sp. nov. (Lombok) and T. sulawesi Loktionov Lelej, sp. nov. (Sulawesi). The genus Telostholus is newly recorded from the islands of Sulawesi and Lombok. A key to the Indonesian species is given for females.

Discovery of the genus Kudakrumia Krombein, 1979 (Hymenoptera: Mutillidae) in India and description of a new species.

The Oriental genus Kudakrumia Krombein, 1979 is newly reported from India with two species: K. mirabilis Krombein, 1979 (Kerala) and K. rangnekari Girish Kumar Lelej, sp. nov. (Goa, Kerala). A key to the Oriental genera and species of tribe Kudakrumiini is given.

Revision of the subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox (Hymenoptera: Pompilidae: Pepsinae).

The systematics of the subgenus Stigmatodipogon Ishikawa of the genus Dipogon Fox is revised. Six species are listed. Two new species, Dipogon (Stigmatodipogon) kurokawai Shimizu, sp. nov. (Honshu, Japan) and D. (S.) lao Loktionov Lelej, sp. nov. (Laos) are described and illustrated and other four species from Japan, the Russian Far East and Eastern Siberia are redescribed. A new combination is proposed for D. (S.) budrisi (Loktionov Lelej, 2014), comb. nov. Nesting records of D. (S.) kurokawai and prey records of D. (S.) macrostigmatus Ishikawa, 1959 and D. (S.) petiolatus Lelej, 1986 are presented. These are the first records of biology for this subgenus. A key to species is provided.

A contribution to the Mutillidae (Hymenoptera) of Hong Kong.

A list of 12 species in nine genera occurring in Hong Kong is given. The hitherto unknown male of Bischoffitilla lamellata (Mickel, 1933) is described and illustrated. Six species are newly recorded from Hong Kong. The current number of known mutillid species of Hong Kong is doubled from six to 12.

Discovery of the spider wasp genus Sphictostethus Kohl, 1884 (Hymenoptera: Pompilidae: Pepsinae) in New Guinea, with description of two new species.

Two new species of the genus Sphictostethus Kohl, 1884 are described and illustrated from New Guinea (Indonesia: West Papua). Both species, S. papua Loktionov Lelej, sp. nov. and S. arfak Loktionov Lelej, sp. nov. differ from congeners by their peculiar head and clypeus shape, the presence of tubercles on the mesopleuron and propodeum, and the well-developed metasomal petiole. The genus Sphictostethus is newly recorded from New Guinea as a new northernmost border for their distribution within the Australian Region. An addition to the key of Australian species is given.

Contribution to the knowledge on the spider wasps genus Morochares Banks, 1934 (Hymenoptera: Pompilidae) from China.

Five species of the genus Morochares Banks, 1934 are reported from China, four of them are described and illustrated as new species: M. sinica Loktionov Lelej, sp. nov. (Guangdong, Hainan), M. wahisi Loktionov Lelej, sp. nov. (Hainan), M. wolfi Loktionov Lelej, sp. nov. (Guangdong) and M. xuzaifui Loktionov, Lelej Liu, sp. nov. (Zhejiang, Guangdong). The genus Morochares is newly recorded from mainland China. A key to the females of the Chinese species is given.

Discovery of the genus Nipponodipogon Ishikawa in the Oriental region, with description of two new species from China (Hymenoptera, Pompilidae).

The genus Nipponodipogon Ishikawa, 1965 is newly recorded from China (Guangdong, Hainan, and Yunnan) and the Oriental Region. Two new species, N. orientalis Loktionov, Lelej & Xu, sp. n. (Guangdong, Hainan, Yunnan) and N. shimizui Loktionov, Lelej & Xu, sp. n. (Guangdong, Yunnan), are described and illustrated. The updated key to the species based on Shimizu et al. (2015) is given.

Review of the Priocnemis hyalinata species-group (Hymenoptera: Pompilidae), with description of a new species from China.

Eight species in the Priocnemis hyalinata species-group are reviewed. The species-group is recorded from Oriental Region for the first time, and one new species, Priocnemis (Priocnemis) yunnanensis Loktionov, Lelej & Xu, sp. nov. (China: Yunnan) is described and illustrated. The lectotype of Salius (Priocnemis) unicolor Gussakovskij is designated. The distribution of P. (P.) hyalinata (Fabricius), P. (P.) fennica Haupt and P. (P.) unicolor (Gussakovskij) is clarified and enlarged within Russia. Keys to species for males and females are given.

Review of the genus Zeugomutilla Chen, 1957 (Hymenoptera, Mutillidae, Mutillini), with description of two new species.

Eight species of Zeugomutilla Chen, 1957 are reviewed. Zeugomutilla angkorensis Williams, sp. nov. (Cambodia, Thailand, Vietnam) and Z. pangi Lelej, sp. nov. (China: Hainan) are described and illustrated. A new combination is proposed for Z. spinulosa (André, 1898), comb. nov. (from Pristomutilla Ashmead, 1903). Zeugomutilla bainbriggei (Turner, 1911) and Z. horni (André, 1907) are newly recorded from India (Tamil Nadu), Z. pycnopyga Chen, 1957 is newly recorded from Thailand, and Z. saepes (Chen, 1957) from Cambodia and Thailand. An updated diagnosis of the genus and key to males and females are given.

Review of the genus Eopompilus Gussakovskij, 1932 (Hymenoptera: Pompilidae) with the description of new species from China.

The genus Eopompilus Gussakovskij, 1932 is reviewed. A new species, Eopompilus pseudominor Loktionov, Lelej Xu, sp. nov. is described and illustrated from China, Yunnan. A new synonymy is proposed for E. minor Gussakovskij, 1932 =E. minor itoi Ishikawa, 1965, syn. nov. A lectotype of E. orientalis Gussakovskij, 1932 is designated. The distribution of E. minor Gussakovskij and E. luteus Lelej is enlarged to include China. Araneus ventricosus (L. Koch) (Araneae, Araneidae) is a newly recorded host for E. luteus. An updated diagnosis of the genus Eopompilus, and key to females and males are given.

Review of the genus Stigmaporus S. Zonstein, 2001 (Hymenoptera: Pompilidae), with description of new species.

The genus Stigmaporus S. Zonstein, 2001 is newly recorded from Russia. Four species are reviewed. Stigmaporus volgadon Loktionov & Lelej, sp. nov. from South of European part of Russia (Volgograd Prov. and Astrakhan Prov.) is described and illustrated. Stigmaporus centralasiaticus Wolf, 1990 is distributed in Xinjiang (China) not in Afghanistan, Pakistan or former USSR as was recorded earlier. Key to species is provided.

Review of the genus Promecidia Lelej, 1996, with description of two new species from China (Hymenoptera, Mutillidae, Trogaspidiini).

Eleven species of Promecidia Lelej, 1996 are reviewed and keyed, and the diagnosis of the genus is given. The genus Promecidia is newly recorded from China and Promecidia abnormis Lelej, sp. n. (China: Guangdong, Hainan) and Promecidia chui Lelej & Xu, sp. n. (China: Yunnan, Hainan) are described and illustrated. New combination is proposed for Promecidia boopis (Kohl, 1882), comb. n. (from the genus Petersenidia Lelej, 1996). New status is proposed for Promecidia saturnia (Mickel, 1935), stat. n. and Promecidia samawangensis (Mickel, 1935), stat. n.

Keys to genera of the spider wasps (Hymenoptera: Pompilidae) of Russia and neighbouring countries, with check-list of genera.

Keys to 55 genera of spider wasps of Russia and neighbouring countries in females and males are given. Of them 34 genera are distributed in Russia. An annotated list of genera with type species and distribution data within Russia and biogeographical regions is given. The genus Xenaporus Ashmead, 1902 and X. eremocanus Wolf, 1990 are newly recorded from Russia. According to ICZN 1995 (Opinion 1820) new synonymy (valid name first) is proposed for the type species of genus Cryptocheilus Panzer, 1806: Sphex annulata Fabricius, 1798 (=Pompilus alternatus Lepeletier de Saint Fargeau, 1845, syn. nov.; =Pompilus comparatus Smith, 1855, syn. nov.; =Priocnemis culpabilis Costa, 1893, syn. nov.; Salius annulatilis Richards, 1935, syn. nov.).