Melanophora Meigen 1803

Key to species of Melanophora

1 M vein complete, wing cell r 4+5 closed and long petiolate (Figs 9–10). Crossed apical scutellar setae present and well developed (Fig. 8). Mouthparts well developed (Figs 2, 4). Female: wing membrane mainly brownish with whitish posterior subapical spot (Fig. 10)................................................................................................................................. 2

- M incomplete and not reaching wing margin, ending about where bend of M should be (Figs 14, 20). Scutellum without crossed apical setae. Mouthparts strongly reduced, vestigial (Fig. 13). Female wing pattern not as above.. 3

2 Petiole of R 4+5 very long, 2.1–2.5 times as long as postangular section of M; Cs 6 at least as long as Cs 4 (distinctly longer in female); anterodistal edge of wing with a concavity at the intersection of 4 th and 6 th costal sections, very pronounced in female, just visible in male (Figs 9, 10). Female head and thorax mainly yellow in ground colour. Male cerci, in posterior view, very narrow; basally not enlarged (Fig. 11) .......................................... M. chia sp. nov.

- Petiole of R 4+5 0.9–1.6 times as long as postangular section of M. Cs 6 distinctly shorter than Cs 4. Wing without concavity. Female head and thorax black or dark brown. Male cerci basally enlarged (Fig. 12)... M. roralis (Linnaeus)

3 Intra-alar setae present. Thorax and abdomen (Fig. 16) practically without microtomentum. R 1 bare. Mid tibia with 1 anterodorsal seta. dm-Cu lacking or largely incomplete (Fig. 14). Male cercal bases narrowly separated by a distinct medial suture (i.e., not fused) (Fig. 17) ............................................................................................. M. asetosa Kugler

- Intra-alar setae absent. Abdomen dorsally covered with dense brilliant silver microtomentum (well visible in anterodorsal view) (Fig. 21). R 1 dorsally setulose. Mid tibia without anterodorsal setae. dm-Cu present (Fig. 20). Male cercal bases fused medially (Fig. 22)................................................................................................................................. 4

4 R 4+5 dorsally with fine and widely spaced setulae on much of its length. Postpedicel with a row of setae along dorsal margin (Fig. 18). Ground colour of abdominal tergites mainly dark brown but pale yellowish basally and narrowly whitish on hind margins. Mid and hind femora mainly dark-brown or blackish, except for yellowish apices. Only posterior coxa entirely pale yellow. Pleural sclerites of thorax varying in colour from brown to reddish.................... ..................................................................................................................................................... M. basilewskyi (Peris)

- R 4+5 dorsally bare. Postpedicel without setae. Ground colour of abdominal tergites pale reddish-yellow on about basal 2/3 or more and brown in the remaining surface. Mid and hind femurs pale yellow on about basal 3/5 and pale brown on the remaining surface. All coxae yellowish. Pleural sclerites of thorax almost entirely pale reddish-yellow.............................................................................................................................................. M. argyriventris (Curran)