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Hyptiogastrites electrinus Cockerell, 1917, from Myanmar (Burmese) amber: Redescription and its placement within the Evanioidea (Insecta: Hymenoptera)

2004; Taylor & Francis; Volume: 2; Issue: 2 Linguagem: Inglês

10.1017/s147720190400118x

1478-0941

John T. Jennings, Andrew D. Austin, Nicholas B. Stevens,

Insect and Arachnid Ecology and Behavior

Synopsis The wasp Hyptiogastrites electrinus Cockerell, 1917, from the Lower Cretaceous (Upper Albian) Myanmar (Burmese) amber is redescribed from the well‐preserved holotype and its relationship with extant Aulacidae and Gasteruptiidae (Hymenoptera: Evanioidea) evaluated. Although the wing venation is identical to the majority of extant Hyptiogastrinae (Gasteruptiidae), phylogen‐etic analysis places H. electrinus as sister taxon to the Aulacidae s.str., (i.e. Aulacus + Pristaulacus). Thus, Hyptiogastrinae is confirmed as having a restricted Southern Hemisphere distribution (i.e. Australasia and South America). Consistent with this result, H. electrinus is included within a slightly more broadly defined Aulacidae rather than being placed in a new monotypic family. Characters that align this species with the Aulacidae include: having small circular eyes, percurrent Y‐shaped notauli, pyramidal shape of the propodeum and the presence of a groove or ovipositor guide on the hind coxae.