Gryon xanthogaster (Ashmead)

Talamas, Elijah J., Bremer, Jonathan S., Moore, Matthew R., Bon, Marie-Claude, Lahey, Zachary, Roberts, Cheryl G., Combee, Lynn A., McGathey, Natalie, van Noort, Simon, Timokhov, Alexander V., Hougardy, Evelyne & Hogg, Brian, 2021, A maximalist approach to the systematics of a biological control agent: Gryon aetherium Talamas, sp. nov. (Hymenoptera, Scelionidae), Journal of Hymenoptera Research 87, pp. 323-480 : 323

Gryon xanthogaster (Ashmead)

Figures 83-87

Acolus xanthogaster Ashmead, 1893: 174 (original description).

Psilacolus xanthogaster (Ashmead): Kieffer, 1910: 101 (generic transfer); Kieffer, 1926: 152, 153 (description, keyed).

Acoloides xanthogaster (Ashmead): Muesebeck & Walkley, 1951: 696 (generic transfer).

Gryon xanthogaster (Ashmead): Muesebeck & Masner, 1967: 299 (generic transfer); Masner & Muesebeck, 1968: 37 (type information); Masner, 1983: 133, 163 (description, keyed); Johnson, 1992: 398 (cataloged, type information).

Comments.

Masner (1983) described G. xanthogaster as having transverse ridges in the frontal depression and tridentate mandibles, characters that would place this species in Hadronotus . However, the holotype specimen does not have transverse ridges in the frontal depression (Figure 84 ). We identified specimens as G. xanthogaster based on their congruence with the morphology of the head and mesosoma of the holotype (Figures 83-85 ) and the yellow metasoma, as is referenced by the name of this species. An example of a recently collected specimen of G. xanthogaster is illustrated in Figures 86-87 ), which shows the striate axillula and lateral pit on T1.

We suspect that the concept of G. xanthogaster from Masner (1983) applies to Hadronotus bicolor (Figures 88-91 ), a species of similar size and color pattern that was originally described from the Caribbean. As was mentioned by Masner (1983), this species is somewhat common in Florida, although we have recorded specimens from Washington, DC.

Figures

Figures 83 - 87. Gryon xanthogaster 83 holotype female (USNMENT 00989056), head and mesosoma, lateral view 84 holotype female (USNMENT 00989056), head, anterior view 85 holotype female (USNMENT 00989056), head and mesosoma, dorsal view 86 female (UCFC 026 738), head and mesosoma lateral view 87 female (UCFC 026 738), habitus, dorsolateral view.

Figures 88 - 91. Hadronotus bicolor 88 holotype female (USNMENT 01109345), head and mesosoma, lateral view 89 holotype female (USNMENT 01109345), head, anterodorsal view 90 holotype female (USNMENT 01109345), habitus, dorsal view 91 female (FSCA 00091193), dorsolateral view.