Mikrostyles angustilobata Jaschhof

Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, Zootaxa 4127 (2), pp. 201-244 : 236-237

Mikrostyles angustilobata Jaschhof sp. nov.

Fig. 18A–E

Diagnosis. The gonostylus of M. angustilobata consists of a short-subtriangular body and a tusk-shaped, apparently rigid apical tooth, which is recurved dorsolaterally (↓, Fig. A). The gonocoxal lobes are subtriangular and pointed apically (↓, Fig. A). The tegmen apex has a rounded lip that is folded dorsally, so that the apical edge appears blunt-ended; whether this is a preparation artifact I cannot decide from the single specimen available of this species.

Other characters. Body length 2.0 mm. Head. Postgenal setae about 5. Neck of fourth flagellomere 1.3 times longer than node (Fig. D). Palpus 1.1 times the head height, translucent sensilla simply hair-shaped (Fig. C). Wing length / width 2.6 (Fig. E). Genitalia. Ejaculatory apodeme clearly shorter than ventral portions of gonocoxae (Fig. A).

Etymology. The species epithet, angustilobata , is a Latin adjective meaning ‘with narrow lobe’, with reference to the outline of the gonocoxal lobe.

Type material. Holotype. Male, Brunei, Ulu Temburong National Park, Kuala Belalong Field Studies Centre, 27 Jan.–17 Feb 2015, lowland mixed dipterocarp forest, Malaise trap (#2), D. Kaspřák & M. Mantič (in UBDC).

Figures

FIGURE 18 A – E. Mikrostyles angustilobata (holotype male). A: Genitalia, ventral. B: Outline of genitalia, ventral. C: Palpus and labella, lateral. D: Fourth flagellomere, lateral. E: Wing. Scales for A – D, 0.05, for E, 0.5 mm.