Guamomyia, Malloch, 1942

Mailoch, J. R., 1942, Trypetidae, Otitidae, Helomyzidae, And Clusiidae of Guam (Diptera), Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 201-210 : 206

Genus GUAMOMYIA , new genus

This genus belongs to the Platystominae and nms down to Scotiuosoma in Hendel's key to the genera (Genera Insectorum). It has the frons entirely different, however, the ocelli being about one third of length from vertex to anterior margin instead of close to vertex, and the arrangement of the bristles is quite remarkable. There are three long, equally spaced bristles on each orbital margin, the anterior one close to the middle and the upper one at vertex, the middle one being a little behind the level of the posterior ocelli; a fourth pair of bristles that are much shorter, finer, and incurved (undoubtedly the inner vertical pair) is situated about one third of the distance from the vertical to the second bristle and closer together on the inner edge of the orbits; ocellars short, divergent. Frons slightly bulged upward in front, with many stiff erect black hairs. Eyes bare. Profile higher than long. Antennae about half the face length, third segment not over twice as long as wide, broadly rounded at apex, second segment with some long hairs at apex below, one or two of which extend beyond the apex of third segment; aristae short haired on entire length; facial foveae shallow and narrow; epistome slightly projecting; genal bristle present; postocular bristle lacking. Thorax with the following bristles: 1 humeral, 2 notopleurals, 1 supra-alar, 2 postalars, 1 pair of dorsocentrals, 1 pair of short prescutellar acrostichals, and 6 scutellars; disk of scutellum haired. \Ving fasciate with black, first and third veins setulose on their entire extent above, inner cross vein close to middle of the discal cell; first posterior cell not narrowed at apex, anal vein obsolete apically, cross vein closing anal cell almost straight. Lower squama rudimentary.

Genotype: Gua.inomyia fascipennis , new species.