Two new species of Oobius Trjapitzin (Hymenoptera, Encyrtidae) egg parasitoids of Agrilus spp. (Coleoptera, Buprestidae) from the USA, including a key and taxonomic notes on other congeneric Nearctic taxa Author Triapitsyn, Serguei V. Author Petrice, Toby R. Author Gates, Michael W. Author Bauer, Leah S. text ZooKeys 2015 498 29 50 http://dx.doi.org/10.3897/zookeys.498.9357 journal article http://dx.doi.org/10.3897/zookeys.498.9357 1313-2970-498-29 480DEF98A22C425384796222FD3E9E2F Taxon classification Animalia Hymenoptera Encyrtidae Oobius Trjapitzin, 1963 Oobius Trjapitzin 1963 : 544-545. Type species: Tyndarichus rudnevi Nowicki, by original designation. Avetianella Trjapitzin 1968 : 97-99. Type species: Avetianella capnodiobia Trjapitzin, by monotypy. Synonymized under Oobius by Noyes 2010 : 660-662. Szelenyiola Trjapitzin 1977 : 160. Type species: Szelenyiola nearctica Trjapitzin, by original designation and monotypy. Synonymized under Oobius by Noyes 2010 : 660-662. Oobius : Trjapitzin 1977 : 161 (key to genera of the subtribe Oobiina of the tribe Discodini of the subfamily Encyrtinae ); Noyes 2010 : 660-662 (synonymy, diagnosis, host associations, comments); Trjapitzin and Volkovitsh 2011 : 670-672 (diagnosis of Oobius s. str., taxonomic position, key to world species). Avetianella : Gordh and Trjapitzin 1981 : 6 (comments); Trjapitzin 2001 : 734-735 (comments, key to world species). Oophagus Liao in Liao et al. 1987 : 184. Type species: Oophagus batocerae Liao, by original designation and monotypy. Synonymized under Avetianella by Zhang and Huang 2004 : 34-35, and under Oobius by Noyes 2010 : 660. Szelepyiola : Trjapitzin and Volkovitsh 2011 : 671 (misspelled). Comments. Oobius is a cosmopolitan genus as defined by Noyes (2010) who provided its detailed diagnosis, which is omitted here for brevity. One extralimital species, Oobius striatus Annecke, is also known from eggs of Asilidae ( Diptera ) in Montenegro and Zimbabwe ( Annecke 1967 ; Noyes 2010 , 2014 ). Key to the Nearctic species of Oobius , females (both native and introduced) ( Oobius depressus (Girault) not included)
1 Oobius agrili Zhang & Huang
713 2
910 Oobius nearcticus (Trjapitzin)
2681222 3
12 Oobius minusculus sp. n.
62022 4
6 Oobius buprestidis (Gordh & Trjapitzin)
822 5
23 Oobius longoi (Siscaro)
1927 6
26 Oobius whiteorum sp. n.
8 Oobius dahlsteni (Trjapitzin)
Figures 1-8. 1-4 Oobius agrili female (from USDA Forest Service laboratory colony, East Lansing, Michigan, USA; of China origin), 1 hind leg 2 antenna 3 lateral habitus 4 forewing base 5-6 Oobius buprestidis female (holotype), 5 lateral habitus 6 antenna 7-8 Oobius dahlsteni female (holotype) 7 dorsal habitus 8 antenna. Figures 9-16. 9-10 Oobius nearcticus female (holotype), 9 antenna 10 clava 11 a- 11b: 11a holotype slide of Oobius minusculus 11b holotype slide of Oobius whiteorum 12-16 Oobius minusculus 12 antenna (holotype female) 13 mesosoma and metasoma (holotype female) 14 metasoma (paratype male) 15 head (paratype female) 16 pedicel and flagellum (paratype male). Figures 17-24. 17-18 Oobius depressus female 17 dorsal scutellum (lectotype) 18 dorsal habitus (paralectotype) 19 Oobius zahaikevitshi female (environs of Volgograd, Krasnoarmeyskiy District, Volgograd Province, Russia), forewing 20-21 Oobius hasmik female (paratype) 20 antenna 21 forewing 22-23 Oobius longoi female (from University of California laboratory colony, Riverside, California, USA; of Australia origin), 22 antenna 23 forewing 24 Oobius nearcticus female (holotype), lateral habitus. Figures 25-32. 25 Oobius minusculus male (paratype), mesosoma 26-29 Oobius whiteorum 26 antenna (holotype female) 27 a pair of wings (holotype female) 28 dorsal habitus (holotype female) 29 genitalia (paratype male) 30 Oobius zahaikevitshi female (environs of Volgograd, Krasnoarmeyskiy District, Volgograd Province, Russia), antenna 31 Oobius minusculus female (holotype), a pair of wings 32 Oobius whiteorum (paratype male), antenna.