Oobius depressus (Girault, 1916)

Triapitsyn, Serguei V., Petrice, Toby R., Gates, Michael W. & Bauer, Leah S., 2015, 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, ZooKeys 498, pp. 29-50 : 34

Taxon classification Animalia Hymenoptera Encyrtidae

Oobius depressus (Girault, 1916) Figures 17-18

Habrolepoidea depressa Girault 1916: 343-344. Type locality: Morristown, Henry Co., Illinois, USA.

Avetianella depressa (Girault): Gordh and Trjapitzin 1981: 8; Trjapitzin and Gordh 1984: 1275 (lectotype designation, comments); Trjapitzin 2001: 735 (mentioned), 736 (list). Oobius depressus (Girault): Noyes 2010: 662, 690.

Type material examined.

Lectotype female [USNM], designated by Trjapitzin & Gordh (1984), on point with following six labels: "Morristown XII-8-14 Ill", "ExEggs Cylene robinae", "JRMalloch Coll.", [red] "Paratype No. 20328 U. S. N. M.", " Avetianella Det. Trjapitzin et Gordh", [red] "Lectotypus ♀ Habrolepoidea depressa Grlt Des. Trjapitzin et Gordh". Paralectotypes, 2 males, 2 females: 1 female [USNM] on point with following six labels: "Morristown XII-8-14 Ill", "ExEggs Cylene robinae", "JRMalloch Coll.", [red] "Paratype No. 20328 U. S. N. M.", [red] "Paralectotypus ♀ Habrolepoidea depressa Grlt Des. Trjapitzin et Gordh", " Avetianella depressa (Girault) ♀ Det. V. Trjapitzin May 1997"; 1 female [USNM] on point with following six labels: "Morristown XII-8-14 Ill", "ExEggs Cylene robinae ", "JRMalloch Coll.", [red] "Paratype No. 20328 U. S. N. M.", 5. " Habrolepoidea depressa Gir Type", "LECTOTYPE Habrolepoidea depressa Girault By B.D. Burks"; 2 males [USNM] on points, each with following four labels: "Morristown XII-8-14 Ill", "ExEggs Cylene robinae ", "JRMalloch Coll.", [red] "Paratype No. 20328 U. S. N. M.". All specimens of the type series lack the heads and antennae ( Trjapitzin and Gordh 1984; Trjapitzin 2001).

Distribution.

USA (Illinois) ( Girault 1916).

Host.

Megacyllene robiniae (Forster) ( Cerambycidae ) ( Girault 1916 [as Cyllene robiniae ]).

Comments.

The identity of this species remains unclear because the original description is poor and without any illustrations; unfortunately, the slide with a head and a forewing of each sex ( Girault 1916) could not be found in the USNM and is presumed lost. The lectotype label affixed by B. D. Burks was not validly designated and is merely a paralectotype. To facilitate identification of this species, we provide illustrations of its scutellum (Fig. 17) and habitus of the female in dorsal view (Fig. 18).