Microdon berobaka Reemer

Reemer, Menno & Bot, Sander, 2015, Six new species of Microdon Meigen from Madagascar (Diptera: Syrphidae), Zootaxa 4034 (1), pp. 127-147 : 130-131

Microdon berobaka Reemer sp. n.

( Figs 7–10 )

Diagnosis. A dark reddish brown, elongate species with yellowish wings, which can be distinguished from other Madagascan species of Microdon by the combination of a yellow face and a fascia of golden pile along the posterior margin of tergite 3 ( Fig. 7 ).

Type material. HOLOTYPE. Adult male. MADAGASCAR. Label: " MADAGASCAR: Menabe Region, / Dist. of Morondava, Beroboka / village, 45 km NE of Morondava, / 4-12.XII.2008, elev. 45 m, / 19°58'65 S, 44°39'.92 E, coll: M. / Irwin, R. Harin'Hala MG-45B-18". Coll. CAS.

Description of male holotype. Body size: 11 mm. Head. Face and gena yellow; white pilose, more yellowish laterally. Oral margin slightly produced. Frons and vertex yellow, except dark brown median macula on frons; yellowish white pilose. Occiput yellow; white pilose and pollinose. Eye bare. Antennal fossa about as wide as high.

Antenna with scape and pedicel reddish brown, basoflagellomere black. Arista dark brown, about 3/4 of length of basoflagellomere. Thorax. Mesoscutum dark reddish brown with faint metallic hues; short appressed white pilose. Postpronotum and postalar callus dark yellow; white pilose. Scutellum semicircular with pair of short apical calcars with mutual distance about 1/4 of width of scutellum at base, slightly concave between calcars. Pleuron yellow, with dorsal half of anepisternum and ventral part of katepisternum brown; all pile white. Propleuron bare. Anepisternum with deep sulcus separating anterior from posterior part; pilose anteriorly and posteriorly, with widely bare part in between. Anepimeron entirely pilose. Katepisternum pilose dorsally, bare ventrally. Katepimeron without pile, but with short white microtrichia. Katatergum and anatergum long and short microtrichose, respectively. Calypter pale grey and halter yellow. Wing. Yellowish in anterior and apical cells. Microtrichose, except bare on cell bc, posterobasal 1/3 of cell br, posterobasal 1/4 of cell bm, anterobasal 1/4 of cell cup, along A 2 in anal lobe and on centre of alula. Legs. Femora dark brown at basal 2/3, yellowish brown apically; white pilose. Tibiae yellowish brown; white pilose. Tarsi dark yellowish brown; basitarsomeres white pilose, other tarsomeres mixed black and yellow or entirely black pilose. Coxae and trochanters dark brown; white pilose. Abdomen. Tergite 1 dark brown; white pilose. Tergite 2 dark reddish brown, slightly paler laterally; white pilose, except for narrow line of golden pile laterally along posterior margin. Tergite 3 dark reddish brown, paler along lateral margin; short black pilose, except longer white pilose along lateral margins and with broad band of golden pile along posterior margin. Tergite 4 dark reddish brown, paler along lateral and posterior margins; short white pilose, except longer golden pilose posteriorly. Sternites pale brown; white pilose (incl. sternite 1). Male genitalia as in Fig. 10 .

Female. Unknown.

Etymology. This species is named after the village of Berobaka , in which the species was found. The epithet is a noun in apposition.

Figures

FIGURES 7 – 10. Microdon berobaka Reemer sp. n. Male holotype. 7. Habitus dorsal. 8. Habitus lateral. 9. Head frontal. 10. Genitalia lateral.