Two newly recorded genera Malayepipona Giordani Soika and Megaodynerus Gusenleitner, with eight new species from China (Hymenoptera, Vespidae, Eumeninae) Author Bai, Yue Author Chen, Bin Author Li, Ting-Jing 0000-0001-7175-2697 ltjing1979@hotmail.com text Zootaxa 2021 2021-11-01 5060 3 371 391 journal article 3747 10.11646/zootaxa.5060.3.4 5ef75467-22ad-499c-8ab7-a9de913a4fca 1175-5326 5635877 77ED8544-5757-4597-A4EA-10967E6078B5 Key to species of genus Malayepipona (modified from the key of Nguyen 2020 ) 1. S2 strongly convex in basal half................................................... M. assamensis Giordani Soika - S2 nearly flat or slightly convex at base, then slightly and gradually convex toward apical margin..................... 2 2. T2 without apical lamella............................................................................... 3 - T2 with apical lamella................................................................................. 7 3. Upper part of propodeum usually with a pair of relatively blunt teeth just behind metanotum ( Figs. 48 , 71).............. 4 - Upper part of propodeum normal, without a pair of teeth just behind metanotum................................... 5 4. Wings dark brown, strongly infuscate, making apical dark spot of forewing marginal cell inconspicous ( Fig. 68 ); female clypeus with separated spots ( Fig. 69 ); area between cephalic foveae on vertex punctate ( Fig. 70 ).............................................................................................. M. clypeata Nguyen & Carpenter, 2012 - Wings brown, slightly infuscate, apical dark spot of forewing marginal cell conspicuous ( Figs 40–41 ); female clypeus wholly ferruginous and male clypeus yellow ( Figs 42–43 ); area between cephalic foveae on female vertex smooth, shiny................................................................................ M. nigricans Bai, Chen & Li , sp. nov. 5. Area surrounding foveae distinctly depressed, smooth and shiny, making foveae obvious ( Fig. 3 ); head and mesosoma largely brown mixed with ferruginous and yellow ( Fig. 1 )............................... M. brunnea Bai, Chen & Li , sp. nov. - Area surrounding foveae not depressed, smooth and shiny, making foveae inconspicuous (fig. 9 in Nguyen, 2020 )); head and mesosoma obviously different from above................................................................. 6 6. Punctures on head and mesosoma smaller and weaker, interspaces between punctures not carinate; pronotal carina not produced at humeral angle, round; metasomal terga shiny, T 1 in dorsal view less than 1.5 times as wide as long, T2 with weaker sparser punctures.................................................................. M . pagdeni Giordani Soika, 1993 - Punctures on head and mesosoma large and coarse, interspaces between punctures reticulate; pronotal carina strongly produced at humeral angle; metasomal terga dull, T 1 in dorsal view more than twice as wide as long, T2 with strong dense punctures.................................................................................. M. fincta Nguyen, 2020 7. S2 nearly flat at base, then slightly convex to apical margin ( Fig. 39 )............................................ 8 - S2 concave or slightly convex at base, then slightly convex to apical margin....................................... 9 8. Clypeus sparsely punctate ( Fig. 33 ); T2 with short apical lamella, T3 without apical lamella ( Fig. 38 ).......................................................................................... M. maculosa Bai, Chen & Li , sp. nov. - Clypeus densely punctate and coarser ( Fig. 2 in Nguyen & Carpenter 2013 ); T2 with longer apical lamella, T3 with short apical lamella ( Fig. 5 in Nguyen & Carpenter 2013 )...................................... M. malickyi ( Gusenleitner, 2010 ) 9. T2 with short apical lamella, T3–T5 without apical lamella................................................... 10 - T2 with longer apical lamella, T3 with short apical lamella................................................... 13 10. Female head with long dense setae ( Fig. 5 in Gusenleitner 2012 )......................... M. visenda Gusenleitner, 2012 - Female head with shorter setae ( Figs 61–62 , 12–15 , 33–34)................................................... 11 11. Wings dark brown, strongly infuscate ( Figs 10–11 ); T2 with inconspicuous apical lamella, just visible in lateral view ( Fig. 19 )................................................................... M. flaviclypeata Bai, Chen & Li , sp. nov. - Wings brown, not infuscate ( Figs 22–23 , 51 , 60 ); T2 with obvious apical lamella ( Figs. 30 , 58 , 66 )................... 12 12. Clypeus densely coarsely punctate; apical tooth of mandible pointed (fig. 1 in Nguyen 2020 ); pronotal carina strongly produced at humeral angle; female head and mesosoma wholly black ( Figs 1–4 in Nguyen 2020 ); forewing with dark spot at apex of marginal cell...................................................................... M. bidoup Nguyen, 2020 - Clypeus sparsely punctate; apical tooth of mandible rounded ( Fig. 61 ); pronotal carina not produced at humeral angle, round ( Fig. 64 ); female head and mesosoma with yellow marks (Figs, 60–61, 64); forewing without dark spot at apex of marginal cell................................................................... M. triangula Bai, Chen & Li , sp. nov. 13. Border between anterior and dorsal surfaces of T1 slightly raised, with faint edge ( Fig. 30 ).......................... 14 - Border between anterior and dorsal surfaces of T1 bluntly angulate, with obvious edge ( Fig. 58 )...................... 15 14. Female clypeus black, laterally with two thick longitudinal yellow strips, T4 without apical lamella.......................................................................................... M. seomyty Nguyen & Carpenter, 2013 - Female clypeus entirely brownish yellow or with one basal transverse yellow band and two connected yellow spots at apex ( Figs 24–25 ), T4 with short apical lamella..................................... M. lamellata Bai, Chen & Li , sp. nov. 15. Clypeus densely coarsely punctate; posterior surface of propodeum with scattered shallow punctures; female clypeus entirely black; T1–T2 with apical yellow bands, T3–T5 without bands...................... M. furva Nguyen & Carpenter, 2013 - Clypeus with sparser punctures medially; posterior surface of propodeum with dense thin striae, mixed with minute punctures ( Fig. 54 ); female clypeus black with two yellow lateral spots at base ( Fig. 52 ); T1–T5 with apical yellow bands (widest on T2 and narrowest on T5) ( Fig. 58 )........................................... M. sparsipuncta Bai, Chen & Li , sp. nov.