taxonID	type	description	language	source
9C76B20CDA538879FF73FCCBFD98FBF4.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 7 km SE Uril, Dyrovatka River, Calamagrostis, swamp, 7. VIII 2022, 1 ♀ (OK).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538879FF73FCCBFD98FBF4.taxon	distribution	DISTRIBUTION. Russia: Leningradskaya and * Amur Provinces. Europe, Turkey, India, Japan, North America.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538879FF73FCCBFD98FBF4.taxon	biology_ecology	HOSTS. Parasitoid of Euura atra (Jurine, 1807) and E. laeta (Brischke, 1883) (Hymenoptera: Tenthredinidae).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538878FF73FBDFFBFCFEF0.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 3 km E Uril, Tarmanchukan River, 4. VIII. 2022, 3 ♀ (OK); 24 km W Arkhara, cordon Kleshinskoe ozero, forest, 12 – 14. VIII 2022, 1 ♀ (OK).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538878FF73FBDFFBFCFEF0.taxon	distribution	DISTRIBUTION. Russia: Leningradskaya, Moscow, Ulyanovsk Provinces, Krasnodar and Stavropol Territories, Crimea Republic, Ural, * Amur Province, Khabarovsk Territory.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538878FF73FBDFFBFCFEF0.taxon	biology_ecology	HOSTS. Parasitoid of lepidopterans, Yponomeuta spp. (Yponomeutidae) and its hymenopterous parasitoids, Diadegma armillatum Gravenhorst and Mesochorus semirufus Holmgren (Ichneumonidae).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA538878FF73FBDFFBFCFEF0.taxon	discussion	REMARKS. The females of B. evonymellae from Amur Province tend to have antennal scape blackish, metallic green dorsally, pedicel and flagellum pale brown with the articulations darker (one specimen has a yellowish antennae); propodeum medially a little longer than dorsellum (shorter in one specimen); callus with 5 setae (one specimen has 2 setae) [3 – 6 setae in European specimens (Graham, 1991: 114)]; mid lobe of mesoscutum with two incomplete rows of 5 – 8 adnotaular setae on each side [2 – 4 irregular rows of 9 – 20 setae on each side in European specimens, see ibid].	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FEA7FC94FCD5.taxon	description	Figs 1 – 7	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FEA7FC94FCD5.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 7 km SE Uril, Dyrovatka River, forest, 6 – 7. VIII 2022, 1 ♀ (OK).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FEA7FC94FCD5.taxon	distribution	DISTRIBUTION. Russia: Nizhegorodskaya, Moscow and Ulyanovsk Provinces, Stavropol Territory, Crimea Republic, Ural, Altai Territory, Novosibisk Province, * Amur Province, Khabarovsk and Primorskiy Territories. Europe, Pakistan, United Arab Emirates, and North America.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FEA7FC94FCD5.taxon	biology_ecology	HOSTS. Parasitoid of many species of leaf-mining Lepidoptera (especially Phyllonorycter spp.), Coleoptera (Rhynchaenus spp.), and Hymenoptera (Tenthredinidae), as gregarious ectoparasite of their larvae; sometimes as a facultative secondary or tertiary parasite of Braconidae and Chalcidoidea.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FEA7FC94FCD5.taxon	discussion	REMARKS. The Amurian specimen differs from the European ones in having a pedicel relatively shorter, flagellum with sparser and shorter longitudinal sensilla (Figs 4 – 6); mid lobe of mesoscutum with one row of 3 adnotaular setae on each side (Fig. 7) [European specimens often have 3 – 4 or more adnotaular setae with a second row of 1 – 2 setae (Graham, 1987: P. 52 – 53)]. Also, the Amurian specimen is similar in colour to the European specimens (a very variable in colour), but differs from the later in having the posterior tergites of the gaster yellow, and the third, fourth and fifth tergites with blackish bands (Figs 1 – 2).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FC3CFC6EFB2B.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 24 km W Arkhara, сordon Juzhnyi, oakery, 13. VIII 2022, 1 ♀, 1 ♂ (OK). Holotype ♀ in ZISP, examined.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FC3CFC6EFB2B.taxon	distribution	DISTRIBUTION. Russian: * Amur and Sakhalin Provinces, Primorskiy Territory.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887FFF73FC3CFC6EFB2B.taxon	biology_ecology	HOSTS. Phyllonorycter issikii (Kumata) (Kosheleva et al., 2022).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887EFF73FB0AFE17FE36.taxon	description	Figs 8 – 11	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887EFF73FB0AFE17FE36.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 24 km W Arkhara, сordon Kleshinskoe ozero, forest, 12 – 14. VIII 2022, 1 ♀ (OK); Arkhara, forest, 17. VIII 2022, 1 ♀ (VCh).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887EFF73FB0AFE17FE36.taxon	distribution	DISTRIBUTION. * Russia: Amur Province. China (Shandong, Hainan) (Li & Li, 2021).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887EFF73FB0AFE17FE36.taxon	biology_ecology	HOSTS. Unknown.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA55887EFF73FB0AFE17FE36.taxon	discussion	REMARKS. The above female specimens quite agree with the original description of Neotrichoporoides basiflavus given by Li & Li (2021), except the head with more yellow areas (Figs 8 – 9) [the lower half of face yellow in Chinese specimens (Li & Li, 2021: 65)]; part of pronotum and prepectus yellow (see Figs 8 – 9) (mesosoma dark green in Chinese specimens, see ibid); mid lobe of mesoscutum with 1 rows of 5 adnotaular setae on each side (Fig. 8) (2 rows, 4 or 5 setae in outer row, and 2 or 3 setae in inner row in Chinese specimens, see ibid); basal half of gaster dorsally and ventrally bright yellow (Figs 9 – 10) [a gaster mainly dark green with metallic reflections, with ca. basal 1 / 3 yellowish in Chinese specimens, (Li & Li, 2021: 75, Fig. 31)].	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA54887EFF73FB6CFD39F9F9.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 3 km E Uril, Tarmanchukan River, hill, 3 – 4. VIII 2022, 2 ♀ (OK); 24 km W Arkhara, сordon Kleshinskoe ozero, forest, 12 – 13. VIII 2022, 12 ♀ (DK, OK).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA54887EFF73FB6CFD39F9F9.taxon	distribution	DISTRIBUTION. Russia: Leningradskaya, Moscow, Ulyanovsk Provinces, Krasnodar and Stavropol Territories, * Amur Province, Khabarovsk and Primorskiy Territory, Sakhalin Island. Europe, Turkey, Israel, Iran, Pakistan, China, Korean Peninsula, Japan, Canada, India, Vietnam.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA54887EFF73FB6CFD39F9F9.taxon	biology_ecology	HOSTS. Parasitoid of coleopterans from the families Anobiidae and Apionidae, dipterans from the families Cecidomyiidae and Tephritidae, hymenopterans from the families Cynipidae, Eurytomidae and Tenthredinidae, and lepidopterans from the families Tortricidae and Yponomeutidae.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA57887DFF73FEA8FB96FCB3.taxon	materials_examined	MATERIAL EXAMINED. Russia. Amur Prov.: KhR, 3 km E Uril, Tarmanchukan River, 3 – 4. VIII. 2022, 8 ♀ (OK); 7 km SE Uril, Dyrovatka River, 7 – 8. VIII 2022, 1 ♀ (OK); 24 km W Arkhara, cordon Kleshinskoe ozero, forest, meadow, 12 – 14. VIII 2022, 15 ♀ (ChV, DK, OK); cordon Juzhnyi, meadow, 13. VIII. 2022, 3 ♀ (OK).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA57887DFF73FEA8FB96FCB3.taxon	distribution	DISTRIBUTION. Russia: Moscow Province, Stavropol Territory, * Amur Province, Primorskiy Territory. Europe, China.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA57887DFF73FEA8FB96FCB3.taxon	biology_ecology	HOSTS. Unknown. The parasitoid associated with Salix spp.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA57887DFF73FEA8FB96FCB3.taxon	discussion	REMARKS. The Amurian specimens is similar to the European specimens, as in redescription by Graham (1987), but differs in having a shorter clava, 3.20 – 3.43 times as long as broad [4.0 – 5.5 times as long as broad in European specimens (Graham, 1987: 103)] and fore wing usually longer, up to 2.42 times as long as broad [2.05 – 2.20 times as long as broad in European specimens [(Graham, 1987: 96, Fig. 121)], legs with fore coxae yellowish [testaceous in European specimens, see ibid], gaster, including ovipositor sheaths, slightly longer, 1.48 – 1.67 times as long as broad [1.3 – 1.5 times as long as broad in European specimens, see ibid].	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	description	Figs 12 – 16	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	materials_examined	TYPE MATERIAL. Holotype – ♀, Russia: Amur Prov.: KhR, 24 km W Arkhara, сordon Kleshinskoe ozero, forest, 12 – 14. VIII. 2022, OK (antenna, permanent slide, no. 158) [ZISP]. Paratype: same locality as holotype, 1 ♀ (VCh) [ZISP].	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	description	DESCRIPTION. FEMALE. Body length 2.07 – 2.09 mm. Body dark green-blue with dull metallic luster; base of gaster pale yellow; mouth-edge testaceous. Scape and pedicel yellow, flagellum brown. Legs yellow, except mid coxae brownish at base, hind coxae concolorous with mesosoma. Tegulae yellow. Wings hyaline, venation pale yellowish. Head 1.18 – 1.22 times as broad as mesoscutum, 2.00 – 2.22 times as broad as long (in dorsal view); 1.30 – 1.34 times as broad as height; temples about 0.22 – 0.24 length of eyes (dorsal view); POL 1.10 OOL; OOL 2.30 – 2.50 OD. Frons with median line. Eyes 1.80 – 1.84 times as long as broad (in dorsal view), 1.13 – 1.16 times as height as broad (in lateral view), separated by 1.46 – 1.55 times their own height (in frontal view). Malar space 0.63 – 0.70 height of eye, malar sulcus very slightly curved. Mouth 1.40 – 1.43 times malar space. Antenna (Fig. 16) with scape 1.04 – 1.10 height of eye, reaching vertex, 4.0 – 4.4 as long as broad; pedicel plus flagellum 1.46 – 1.66 times breadth of mesoscutum; pedicel twice as long as broad and 0.83 as long as F 1; funicle proximally about as stout as pedicel, its segments decreasing in length, F 1 2.5 – 2.6 times, F 2 2.43 times, F 3 1.79 times as long as broad, clava slightly broader than F 3, 0.9 – 1.05 times as long as F 2 plus F 3, 2.89 – 3.93 times as long as broad. Mesosoma 1.77 – 1.86 times as long as broad. Pronotum subconical, 0.50 as long as mesoscutum. Mid lobe of mesoscutum 1.05 – 1.11 as long as broad, with superficial reticulation; median line absent; 3 adnotaular setae on each side. Scutellum 0.67 – 0.71 times as long as mesoscutum, 1.30 – 1.33 times as broad as long; submedian lines distinctly nearer to sublateral lines than to each other, enclosing a space 2.00 times as long as broad, anterior pair of setae slightly before the middle. Dorsellum 2.00 – 2.14 times as broad as long, shiny, with superficial reticulation. Lateral lobes of metanotum with a row of foveae along anterior margin (Fig. 12). Propodeum medially 1.20 times as long as dorsellum; with weak, superficially reticulate sculpture; anterior part of median carina in groove, posterior part, near propodeal foramen, raised, spiracles circular, separated by their diameter from metanotum, their outer rim covered by a raised flap of the callus; callus with 2 setae. Fore wing (Fig. 14) 2.75 – 2.80 times as long as broad; reaching well beyond tip of gaster, with apical margin rounded; costal cell 0.80 – 0.94 times as long as M, 14 times as long as broad; SM with 3 dorsal seta; M 5.10 – 6.25 times length of ST, its front with 14 setae; speculum small, closed below; cilia of apical margin about 0.63 – 0.71 length of ST. Hindwing slightly pointed, 5.56 – 6.07 times as long as broad, cilia 0.33 – 0.35 breadth of wing. Metasoma. Gaster (Fig. 15) longitudinal-oval, acuminate, 2.02 – 2.30 times as long as broad, 1.40 – 1.44 times as long as mesosoma; last tergite as long as broad; longest seta of each cercus about 2.22 – 2.25 length of next longest seta, curved; ovipositor sheaths slightly projecting; tip of hypopygium at 0.5 length of gaster. MALE. Unknown. COMPARATIVE DIAGNOSIS. In addition to the features mentioned in the key below, A. kostjukovi sp. n. is differs from A. (O.) vasilisae sp. n. and A. (O.) walkeri sp. n. in having a face with median line on the frons, mid lobe of mesoscutum with 3 adnotaular setae on each side, and propodeum with anterior part of median carina in groove, posterior part, near propodeal foramen, raised; the outer rim of spiracles covered by a raised flap of the callus. In addition, A. kostjukovi sp. n. has a unique structure of the metanotum, its lateral lobes with a row of foveae along the anterior margin (Fig. 12).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	biology_ecology	HOSTS. Unknown.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	etymology	ETYMOLOGY. Named after Victor V. Kostjukov, who contributed greatly to the study of the subfamily Tetrastichinae in the Russian Far East. Aprostocetus (Ootetrastichus) vasilisae Kosheleva, sp. n. https: // zoobank. org / NomenclaturalActs / 412 C 5 F 27 - 6 AF 4 - 4385 - 910 B- 278 B 5551 CE 32 Figs 17 – 22	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	materials_examined	TYPE MATERIAL. Holotype, female: Russia: Amur Prov., KhR, 24 km W Arkhara, сordon Kleshinskoe ozero, forest, 12 – 13. VIII 2022 (VCh) (antenna, permanent slide, no. 151) (ZISP).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	description	DESCRIPTION. FEMALE (holotype). Body length 1.39 mm. Mesosoma bright green-blue; head with yellow-brownish regions. Prepectus brownish with weak metallic tinge. Base of gaster pale yellow, rest of the gaster brownish with green metallic luster. Antennae pale yellow. Legs pale yellow, except hind coxae concolorous with mesosoma. Tegulae yellow. Wings hyaline, venation pale yellowish. Head 1.23 times as broad as mesoscutum, twice as broad as long (in dorsal view); 1.19 times as broad as height; temples about 0.19 length of eyes; POL 1.29 OOL, OOL 2.33 OD. Frons without median line. Vertex with sparse long setae. Eyes 2.29 times as long as broad (in dorsal view), 1.06 times as height as broad (in lateral view), separated by 1.22 times their own height (in frontal view). Malar space 0.56 height of eye, malar sulcus straight. Mouth 1.63 times malar space. Antenna (Fig. 22) with scape, 4.00 times as long as broad, as height as eye, reaching well above vertex; pedicel plus flagellum 1.61 times breadth of mesoscutum; pedicel 2.40 times as long as broad and 0.94 as long as F 1; funicle proximally about as stout as pedicel, its segments decreasing in length, F 1 2.29 times, F 2 2.04 times, F 3 1.79 times as long as broad, clava 2 - segmented, slightly broader than F 3, 0.98 times as long as F 2 plus F 3; 3.20 times as long as broad. Mesosoma 1.73 times as long as broad. Pronotum (Fig. 19) subconical, 0.40 as long as mesoscutum. Mid lobe of mesoscutum 1.10 times as long as broad, shiny, with superficial engraved reticulation; median line absent; 2 long adnotaular setae on each side. Scutellum, moderately convex, 0.73 times as long as mesoscutum, 1.21 times as broad as long; submedian lines about equidistant from each other and from sublateral lines, enclosing a space 2.50 times as long as broad, anterior pair of setae behind the middle of scutellum. Dorsellum 1.83 times as broad as long, shiny, almost smooth. Propodeum medially as long as dorsellum; surface shiny, smooth; median carina expanded in posterior part; spiracles small, circular, separated by their diameter from metanotum; callus with 2 setae. Forewing 2.67 times as long as broad; costal cell 0.83 times as M; SM with 2 dorsal setae; M 4.37 times length of ST; its front with 10 setae; speculum absent, cilia of apical margin about 0.67 length of ST. Hindwing pointed, 8.00 times as long as broad; cilia 0.80 breadth of wing. Metasoma. Gaster longitudinal-oval, 1.35 times as long as thorax, 2.32 times as long as broad; last tergite 1.17 times as long as broad; longest setae of each cercus 2.0 times length of next longest, curved; ovipositor sheaths only slightly projecting; tip of hypopygium at 0.5 length of gaster. MALE. Unknown. COMPARATIVE DIAGNOSIS. In addition to the features mentioned in the diagnosis of A. (O.) kostjukovi sp. n. and the key below, A. (O.) vasilisae sp. n. is similar to A. (O.) mycerinus by the scutellum, moderately convex, with submedian lines about equidistant from each other and from sublateral lines, and anterior pair of setae behind the middle of scutellum. A. (O.) vasilisae sp. n. and A. (O.) kostjukovi sp. n. are also similar to A. (O.) microocellus Kostjukov, 1995 by the pale yellow base of the gaster, propodeum medially as long as dorsellum, callus with 2 setae and yellow legs. Both new species differ from A. (O.) microocellus in having a longer clava and a shorter female gaster.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	biology_ecology	HOSTS. Unknown.	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA578871FF73FCE3FDA3F983.taxon	etymology	ETYMOLOGY. Named after collector of type specimen, Vasilisa G. Chemyreva (ZIN RAS, St. Petersburg).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA5A8876FF73FEA8FD0BFEF0.taxon	description	Figs 23 – 27	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA5A8876FF73FEA8FD0BFEF0.taxon	materials_examined	TYPE MATERIAL. Holotype, female: Russia: Amur Prov.: KhR, 24 km W Arkhara, сordon Kleshinskoe ozero, forest, 12 – 14. VIII 2022 (OK) (antenna, permanent slide, no. 161) (ZISP).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA5A8876FF73FEA8FD0BFEF0.taxon	description	DESCRIPTION. Female (holotype). Body length 1.50 mm. Body dark green with golden reflections. Antennae brown. Legs brownish, except coxae concolorous with body. Tegulae dark brown. Wings hyaline, venation yellowish. Head 1.10 times as broad as mesoscutum, 2.13 times as broad as long (in dorsal view); 1.31 times as broad as height (in frontal view); temples 0.15 length of eyes; POL 1.67 OOL, OOL 2.00 OD. Frons without median line. Eyes 1.86 times as long as broad (in dorsal view), 1.31 times as height as broad (in lateral view), separated by 1.27 times their own height (in frontal view). Malar space 0.63 height of eye, malar sulcus straight. Mouth 1.09 times as malar space. Antenna (Fig. 27) with scape, 3.59 times as long as broad, its front edge with three setae; 0.93 as height as eye, reaching above vertex; pedicel plus flagellum 1.46 times breadth of mesoscutum; pedicel twice times as long as broad and 0.80 as long as F 1; funicle proximally about as stout as pedicel, its segments decreasing in length, F 1 2.50 times, F 2 1.94 times, F 3 1.59 times as long as broad, clava 2 - segmented, slightly broader than F 3, 3.26 times as long as broad, 0.91 times as long as F 2 plus F 3; apical claval segment with spine short. Mesosoma 1.71 times as long as broad. Pronotum (Fig. 23) subconical, 0.42 times as long as mesoscutum. Mid lobe of mesoscutum 1.15 times as broad as long, shiny, with engraved longitudinal reticulation; median line absent; two long adnotaular setae on each side. Scutellum 0.94 times as long as mesoscutum, 1.19 times as broad as long; moderately flat, sculptured like mid lobe of mesoscutum, submedian lines nearer to sublateral lines than to each other, enclosing a space 1.80 times as long as broad, anterior pair of setae slightly before the middle. Dorsellum 3.75 times as broad as long, shiny. Propodeum (Fig. 23) strongly punctate-reticulate, medially 2.5 times as long as dorsellum; median carina expanded posteriorly; spiracles very small, circular, separated by their diameter from metanotum; callus with 4 setae. Forewing 2.62 times as long as broad; SM with 2 dorsal setae; costal cell 0.86 times as M; M 5.00 times length of ST; speculum rudimentary, cilia of apical margin about 0.86 length of ST. Hindwing narrow, acute, 8.00 as long as broad; cilia 0.71 breadth of wing. Metasoma. Gaster (Fig. 26) longitudinal-oval, acuminate, 1.29 times as long as thorax, 2.03 times as long as broad, dorsal surface finely sculptured than propodeum; last tergite as long as broad; longest setae of each cercus 2.58 times length of next longest, curved; ovipositor sheaths very slightly projecting; tip of hypopygium at 0.44 length of gaster. MALE. Unknown. COMPARATIVE DIAGNOSIS. In addition to the features mentioned in the diagnosis of A. (O.) kostjukovi sp. n. and the key below, A. (O.) walkeri sp. n. is also distinguished by its strongly punctate-reticulate propodeum (Fig. 23), medially 2.5 times as long as dorsellum, and gaster is also clearly reticulated (Fig. 26).	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
9C76B20CDA5A8876FF73FEA8FD0BFEF0.taxon	etymology	ETYMOLOGY. The new species is named in honour of the world-famous entomologist Francis Walker, who was the first to describe new species of tetrastichine wasps from the Amur River (" Amurland ").	en	Kosheleva, O. V. (2025): EULOPHID WASPS OF THE SUBFAMILY TETRASTICHINAE (HYMENOPTERA, CHALCIDOIDEA) FROM THE KHINGAN RESERVE (AMUR PROVINCE, RUSSIA), WITH DESCRIPTIONS OF NEW SPECIES OF THE GENUS APROSTOCETUS (SUBGENUS OOTETRASTICHUS). Far Eastern Entomologist 515: 1-15, DOI: 10.25221/fee.515.1, URL: https://doi.org/10.25221/fee.515.1
