STYLOGASTRINAE WILLISTON, 1885

Gibson, Joel F. & Skevington, Jeffrey H., 2013, Phylogeny and taxonomic revision of all genera of Conopidae (Diptera) based on morphological data, Zoological Journal of the Linnean Society 167 (1), pp. 43-81 : 68

STYLOGASTRINAE WILLISTON, 1885

Type genus Stylogaster Macquart, 1835: 38 . Included genus: Stylogaster . Uncontroverted morphological autapomorphies: ommatidia distinctly larger anteriorly (18); facial fovea absent (19); protibial, apical spurs present (50); katepisternum bare (64); alula narrow (82); female abdominal sternite 2 and 3 absent (85); female hypoproct sclerotized and elongate (99). The vertex is expanded to more than half the length of the frons, sometimes reaching the ptilinum (6) in all members of Stylogaster (except S. biannu- lata and S. stylata ). The facial carina is strongly developed (23) in all members of Stylogastrinae ; this character state has arisen independently in Tropidomyia . The anterior margin of the subcranial cavity projects forward to a narrow point in Stylogastrinae (37); this character state is also observed in Conopinae . Maxillary palpi are absent (39, 40) in all members of Stylogastrinae ; this character state is also observed in some members of Conopinae . Bristles are present on the anepimeron (62) in all members of Stylogastrinae ; this character state is also observed in Strongylophthalmyiidae and Pyrgotidae . Crossvein sc-r is present (76) in all members of Stylogastrinae ; this character state is also present in Conopinae . The male cerci are elongate (113) in all members of Stylogastrinae ; this character state is also observed in Pyrgotidae and Strongylophthalmyiidae .

Gibson et al. (2012) recover Stylogastrinae as monophyletic with the same set of apomorphic character states. They add the following additional apomorphic character states: bi- or tri-lobed posterior surstyli; male abdominal tergite 6 broad, hemispherical, internal; phallapodeme and ejaculatory apodeme broadened into wide, thin lobe; sperm pump modified into a sclerotized sphere with lateral lobes and a long sperm duct; and phallus with two distinct, sclerotized segments. See the note in Gibson et al. (2012) about alternative spelling of this subfamily name and discussion of past status as a separate family.

Species examined – Stylogaster biannulata ; Stylogaster breviventris ; Stylogaster decorata ; Stylogaster frauci ; Stylogaster inca ; Stylogaster neglecta ; Stylogaster pauliani ; Stylogaster rectinervis ; Stylogaster stylata ; Stylogaster westwoodi ; Stylogaster sp.