Ceratrichomyia behara Seguy , 1951

Reemer, Menno & Stahls, Gunilla, 2013, Generic revision and species classification of the Microdontinae (Diptera, Syrphidae), ZooKeys 288, pp. 1-213 : 92

Ceratrichomyia behara Seguy, 1951 (redescription) Figs 46, 47, 57

Ceratrichomyia behara Séguy, 1951: 14. Type locality: Madagascar, Tananarivo. Coll. MNHN.

Type specimens.

LECTOTYPE. Male. Label 1: "Madagascar, Behara"; label 2 (blue): "Museum Paris, III-38, A. Seyrig"; label 3 (red): “Type”; label 4: " Ceratrichomyia behara type du genre [male symbol] Séguy 50". Coll. MNHN. See genus account of Ceratrichomyia for notes on lectotype designation.

Diagnosis.

This species differs from Ceratrichomyia angolensis sp. n. by the pilose postpronotum and katepimeron. From Ceratrichomyia bullabucca sp. n. it differs by the straight face profile and the parallel-sided tergite 2.

Redescription (based on lectotype).

Adult male. Body size: 7 mm.

Head. Face occupying approximately 1/2 of head width in frontal view; yellow; entirely yellowish white pilose; depressed on lateral 1/3; face profile more or less straight. Gena yellow. Lateral oral margins not produced. Frons and vertex yellow; yellow pilose. Occiput yellow; dorsally wide and yellow pilose, ventrally narrow and whitish pilose. Eye bare. Antennal fossa about as wide as high. Antenna orange brown, getting dark brown towards apex of basoflagellomere; antennal ratio approximately as 1:0,2:3,5. Basoflagellomere very long, entirely covered with pile at least twice as long as diameter of basoflagellomere. Arista very small, shorter than pedicel.

Thorax. Mesoscutum, postpronotum, postalar callus and scutellum reddish brown; short, yellow pilose. Scutellum without calcars. Pleurae orange brown. Anepisternum with deep sulcus separating anterior and posterior part; entirely whitish pilose. Anepimeron entirely pale pilose. Katepisternum densely white pilose dorsally; sparsely pilose ventrally. Katepimeron white pilose. Katatergum with long microtrichia, arranged in oblique rows. Anatergum short microtrichose. Calypter brownish. Halter yellow.

Wing: hyaline; microtrichose, except bare on cell bc, basally on cell r1 along vein Rs, on most of cell br except microtrichose along vena spuria, on most of cell bm except apical 1/8, basal 1/2 of cell cup. Vein bm-cu shorter than basal section of CuA1.

Legs: Orange except femora blackish with orange apical 1/4; pale pilose, except tarsi dorsally black pilose. Coxae and trochanters blackish brown; pale pilose.

Abdomen. Constricted at 2nd segment, with tergite 2 parallel-sided, widest at tergite 3 and 4 (slightly wider than thorax). Tergite 1 dark brown; white pilose. Tergite 2 dorsoventrally flattened, dark brown with large, triangular yellow maculae along lateral margin, posteriorly interconnected and reaching posterior margin, which is entirely yellow; white pilose. Tergite 3 and 4 dark brown with yellow posterior margins; white to yellow pilose. Tergite 4 with two faint submedian grooves from anterior margin to just before posterior margin. Sternite 1 yellow; bare. Other sternites brown; white pilose. Genitalia as in Fig. 57.

Female. Unknown.