Thread subject: Diptera.info :: Tanzanian Anthomyiid

Posted by John Carr on 13-02-2022 16:26
#14

Griffiths (2001): "Constitutive (apomorphic) characters of Anthomyia (sensu lato) are found mainly in the structure of the male terminalia. The 5th sternite processes lack strong outer lateral setae (not longer than the setae along their inner margins except in a few species of the A. pluvialis section), and are more or less vertically oriented distally (with distinctive profile). Synsternite (6 + 7) bears a central, posteriorly directed process (visible in ventral view between the bases of the 5th sternite processes). The inner lobe of the (apically cleft) gonostylus is flattened, and bears a few ventral spines/spinules (strengthened setulae). The distal section of the aedeagus is extensively sclerotized across its dorsal surface (only narrowly membranous ventrally), in most species with a dorsal process at or near its base (or in species lacking this process flared basally, that is with its sclerotization appearing expanded bsally in dorsal view); the acrophallus is represented by a (partly or fully discrete) downcurved preapical sclerite."

He also notes that Anthomyia is distinguished from Lasiomma by the dark spots on the parafacial below the antenna bases when viewed from the side. I can't tell if your fly has those dark spots.