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

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

- Posthumeral (presutural) seta weak. Mesonotum with a pair of dorsocentral, as well as a pair of sublateral vittae. Scutellum with a brown vitta on each side. Apical 1/3 of abdominal terga 2-5 brown. Solomon Is. M. malaita CURRAN, 1936 4 Frons without a sagittal vitta. A round chocolate brown spot present between eye and antenna. Gena with several long setae. Only 1 strong kepst. Philippines, Thailand M. facialis MALLOCH, 1929 - Frons with a sagittal - in cases only linear - brown vitta. A stripe (not a round spot) present between eye and antenna. Two pairs of strong kepst 5 5 Ventral part of cheeks and anterior part of genae with 4 or 5 long setae. Posthumeral seta strong. Solomon Is. M. materna CURRAN, 1936 - Ventral part of cheeks and anterior part of genae with only 1 pair of strong setae. Posthumeral seta weak 6 6 Frontal sagittal vitta strong. Mesonotal stripes dark. Gena below eye slightly broader than 1/3 height of eye. Wing veins ochre. Philippines, Taiwan M. hirticeps MALLOCH, 1929 - Frontal sagittal vitta faint, linear. Gena below eye only as broad as 1/4 height of eye. Wing veins yellow. Papua New Guinea M. biroi sp. n. Neotrigonometopus MALLOCH, 1928 Neotrigonometopus MALLOCH 1928: 319; MALLOCH 1929: 34 (again as "new subgenus"). Type species: Trigonometopus fuscifrons MALLOCH, 1926 (orig. des.). Remarks - The type species was described from Australia (Queensland) and another species ( Trigonometopus albibasis MALLOCH, 1928:319, also from Queensland) was described together with the genus (that time a subgenus of Trigonometopus). There is only one species in the Oriental region: Neotrigonometopus breviceps (HENNIG, 1948), which HENNIG (1948) described accurately with the key for the three known species of the genus. No specimen of this genus was found during this project. But I believe, one can correctly judge the characters and position of the genus based on HENNIG's correct description and fine figures (HENNIG 1948: figs 80-82).