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

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

GENERA AND SPECIES OF THE TRIGONOMETOPUS COMPLEX The genera and species of the Trigonometopus complex, which were studied in the frame of the present project, are given below in alphabetical order of the genera. Diplochasma KNAB, 1914 Diplochasma KNAB, 1914: 131. Type species: Trigonometopus monochaeta HENDEL, 1909 (orig.des.). subgen. Sauteromyia MALLOCH, 1927: 163. Type species: Sauteromyia alboapicata MALLOCH, 1927: 163 (orig. des.). Remarks - Diplochasma alboapicata (MALLOCH, 1927), the only Oriental species of D. (Sauteromyia) was described from Taiwan (Hokutu). Although I did not find it in the materials in my possession during this project, based on its description, its distinctness is clear to me. Its most important characters are as follow: ocellar setae present but minute, no postocellars, anterior frontoorbitals inclinate, a black spot over ocelli, first flagellomere pointed apically, arista pubescent, only 2 rows of acrostichals between dorsocentrals, 0+3 dc pairs, no posthumeral seta, 2 pairs of katepisternals, abdomen with large brownish spots on each tergite above and a black spot on each lateral margin. MALLOCH (1927) wrote, "it appears to me certain that Trigonometopus sauteri HENDEL belongs to this genus". Of course, the concepts on genera were much different as compared to present ones. I managed to find and study the type in the HNHM. T. sauteri belongs unambiguously to Tetroxyrhina (see there). As far as I am informed, only species of Diplochasma (Sauteromyia) occur in the Afrotropical Region. Indeed, I have prepared a manuscript on them describing seven new species from the sub-Saharan Africa and one new species from Madagascar. They will be published in a separate paper (PAPP 2008).