Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 99. (Budapest 2007)
Papp, L.: A review of the Old World Trigonometopini Becker (Diptera: Lauxaniidae)
Diplochasma (Diplochasma) australis sp. n. (Figs 1-3) Type material - Holotype male (HNHM): "Australia, Northern Territory, Mt. Bundey, 144 m, 13°13'S 131°08'E, 4-7. XI. 2000, leg. A. Podlussány". Paratypes (HNHM): 1 male, 1 female: data same as for holotype; 3 maies 2 females [genitalia of one male in a plastic microvial with glycerol]: ibid., Bachelor, 143 m, S^Ol^" E131 o 05'794 , \ 6. XI. 2000. Description - Measurements in mm: body length 3.13 (holotype), 3.30- 3.36 (paratypes), wing length 2.89, 3.02-3.26, wing width 1.02, 1.03-1.05. The new sp. is rather similar to D. (S.) monochaeta (HENDEL, 1909), so below only the differentiating characters are mentioned. Aristal hairs more dense and longest hairs longer than 0.03 mm in D. monochaeta, while D. australis has less dense aristal hairs and longest ones shorter than 0.025 mm. Anterior katepisternal seta subequal to posterior one, or at least longer than half-length of the posterior seta in D. monochaeta. In the new sp. anterior katepisternal reduced to a hair, at most half as long as posterior katepisternal. Male genitalia (Figs 1-3, vs 4-5) are rather small (please compare scale bars of the other figures). The surstylar lobe is not much different in the two species. In D. australis male cereal setae (Fig. 2) longer than in D. monochaeta. Phallus (aedeagus) indistinct (membranous), phallapodeme (Fig. 1 vs Fig. 4) thinner and shorter than in D. monochaeta. Gonites symmetrical, in lateral view (Fig. 3 vs Fig. 5) more curved than in D. monochaeta, but apical (curved) part slightly thicker. In ventral view apical part gradually narrowed (Fig. 1 us Fig. 4), while in D. monochaeta apical part of gonite abruptly narrowed. Diplochasma (Diplochasma) monochaeta (HENDEL, 1909) (Figs 4-5) Material examined - Lectotype male (HNHM): "Formosa Sauter" - "Takao 300 m, 1907." "V. 3." - "monochaeta det. F. Hendel" [red ink] - "typus". It is in a good state of preservation. Paralectotypes (HNHM): 1 male: same label data (in a good state of preservation); 1 male, 2 females: same labels, but "IV. 21." Male: left mid and hind legs lost, left antenna but scape and pedicel lost; females in a good state of preservation only right antenna but scape and pedicel lost on both of them. Other specimens in the HNHM: 2 males: same data as for the lectotype (one of them with abdomen and genitalia in a plastic microvial with glycerol); plus another pin with 2 fore legs and left wing only remained, other parts had been eaten by Anthrenus larvae before 1971.6 males, 2 females: ibid., "IV. 21." (one ofthe males with abdomen and genitalia in a plastic microvial with glycerol). Male genitalia (Figs 4-5) are characterised by less curved and apically abruptly narrowed gonites and larger phallapodeme. Remarks - I selected a lectotype from the syntype series, since D. monochaeta was repeatedly misidentified, particularly so for the Australian specimens (cf. EVENHUIS & OKADOME 1989). So it was not a formal but a taxonomical reason, why I felt I had to do so.
