Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 99. (Budapest 2007)

Papp, L.: A review of the Old World Trigonometopini Becker (Diptera: Lauxaniidae)

surstylar lobe on epandrium (that is mostly rounded apically). Dorsal wall of the male genital pouch membranous, but a distinct, sclerotized, supragenital (subepandrial) sclerite present in Protrigonometopus spp. The homology of this sclerite to/with the bacilliform sclerites of other dipterous families seems rather questionable to me. Gonites ("gonopods" of many authors) are the deterministic part of the genitalia, mostly fused - at least partly - to hypandrium. Phallapodeme (aedeagal apodeme) usually short, looks rod-like in ventral view, but in several genera it forms a lamella sitting on the thicker ventral lath, so in the figures I depicted it in lateral view. Ejaculatory apodeme significant and I think it bears species/genus specific characteristics. Phallus (aedeagus) wholly membranous in the tribe, consequently seldom mentioned below. Female genitalia do not show any peculiarity. Three spermathecae. A KEY FOR THE OLD WORLD GENERA OF TRIGONOMETOPINI Posthumeral seta absent. Male epandrium with or without dorso-caudal pair of appendages 2 Posthumeral seta present. Male epandrium without dorso-caudal pair of appendages 7 1+2 dc pairs. Ocellars strong, wings clear. Eye as high as long, or nearly so. Anterior orbital seta reclinate and as long as posterior pair. OR, AUS Neotrigonometopus MALLOCH, 1928 0+3 de pairs 3 Gena with a row of seta above peristomals (other than unaligned setae on posterior part of gena), continued on cheeks (Figs 74-75). Ocellar setae very small. PAL, OR Luzonomyza MALLOCH, 1929 Gena anteriorly and cheek without a separate row of setae 4 One pair of strong katepisternals, in cases a hair-like anterior kepst discernible. First flagellomere rounded apically. Male epandrium mostly with paired dorso-caudal processes. Facial keel restricted mostly to between antennae. PAL, OR, NEA Tetroxyrhina HENDEL, 1938 Two strong pairs of katepisternals. First flagellomere pointed apically or at least with a sharp apical edge. Male epandrium simple. Facial keel high, distinct also below antennae to middle of face 5 Anterior orbital seta reclinate. Ocellar seta absent or minute but postocellars normal. First flagellomere pointed apically. Male epandrium widely rounded ventrally, gonites simple (Fig. 65). PAL Trigonometopus MACQUART, 1835