Urytalpa macrocera (Edwards, 1913)
Description based on Kjærandsen et al. (2009): On the genus Urytalpa Edwards (Diptera: Keroplatidae) in the Nordic and Nearctic regions, with fixation of a new type species and a key to world males
The long slender antenna, uniform dark brown coloration, and rounder wing with shorter R-Mvein fusion easily distinguishes this species from the other members of the genus. Thelong slender apical projection of the gonocoxites is shared only with U. galdes, sp. n. but mostother structures of the male terminalia are unique and distinct, including the large spoon shaped projectionlaterally from tergite IX with a dense brush of long setae internally. The female can be separatedfrom U. trivittata and U. dorsalis by the short, truncated abdomen and by having globularspermathecae with thin inner walls and thin ducts.
Male
Coloration (specimen in alcohol). Head dark brown, mouth parts brown. Antenna brown with basal part of first flagellomere pale.Thorax dark brown; thoracic stripes dark brown, diffusely separated; humeral area brown. Wings clear, yellowtinged, veins paler brown than in other species. Halter whitish. Legs brown. Abdomen uniformly dark brown.
Terminalia (Fig.). Gonocoxites divided ventrally, with long slender projection. Hypandrial lobe tongue shaped and curved dorsally. Double "bladder shaped" aedeagal guides situated above the gonocoxite. Gonostylus long and slender, subrectangular in lateral view with the apicodorsal corner slightly elongated. Aedeagal apparatus short and small compared to other species, with compressed plate extending only slightly beyond apex of the stout and short lateral apodeme. Tergite IX with large spoon shaped projection laterally and with large dense brush of long setae internally, with deep posterior and shallow anterior U-shaped incision. Proctiger small and short, cercus sessile, broadly ovate in lateral view.
Female
Coloration. Overall brown as in male.
Terminalia (Fig.).Tergites VIII and IX weakly sclerotized apically in front of cercus. Cercus sessile and ovate (A.). Sternite VIII divided ventrally, with slightly truncated corner, with a narrow excavation apicomedially covered with short stiff setae (B.). Spermathecae globular, spermathecae and ducts with thin inner walls (A.).
Male (n=5). Body length 6.5–8.5, 7.79 (n=7) mm. Wing length 5–6.72. 5.83 mm, or3.74–4.15, 3.89 as long as profemur. Antenna length 2.84–3.9 (n=4) mm.
Female (n=3). Body length 5–5.5 mm. Wing length 4.04–4.08 mm, or 3.29–3.54 as long as profemur. Antenna length 1.62–1.7 mm.
Western Europe; known only from northern Britain (Scotland and northern England),France, Norway, Sweden and The Netherlands.