Hypselosyrphus corbiculipes Papavero, 1962

Reemer, Menno, 2013, Taxonomic exploration of Neotropical Microdontinae (Diptera: Syrphidae) mimicking stingless bees, Zootaxa 3697 (1), pp. 1-88 : 26

Hypselosyrphus corbiculipes Papavero, 1962

Figs 68–69 .

Hypselosyrphus corbiculipes Papavero, 1962: 320 .

Studied type specimens. HOLOTYPE. BRAZIL. Female. Label 1: "Rio de Janeiro D.F. Sumaré, Werner, Alvarenga, I.55 "; label 2: "28.632"; label 3 (red): "Holotipo"; label 4: " Hypselosyrphus corbiculipes sp. n. N. Papavero det. 1962". Coll. MZUSP.

Redescription (based on holotype)

Adult female Body size: 7 mm.

Head. Face occupying 1/4 of head width in frontal view; shining blackish brown; with long white pilosity and white pollinosity on lateral 1/3. Gena undeveloped, oral cavity directly bordering eye margins, with lateral margins not produced. Frons shining dark brown, pale pilose, with small spot of white pollinosity along eye margin. Vertex convexly produced, shining dark brown; brown pilose; ocellar triangle not elevated compared to rest of vertex. Occiput brownish black; narrow, only slightly widened dorsally; pale pilose; entirely pale pollinose; with anterior row of dorsally orientated short black pile on dorsal 1/2; with posterior row of posteriorly orientated pale pile over entire length; black pollinose on dorsal half, white pollinose on ventral half. Eye entirely with short, pale pile, about as long as ommati diameter. Antennal fossa about as wide as high. Antenna pale brown; antennal ratio 4:1:4. Basoflagellomere with acute apex; with small sensory pit slightly beyond half the segment. Arista pale, about as long as basoflagellomere.

Thorax. Dark brown. Postpronotum, scutum, postalar callus and scutellum black pilose, except for a few pale pile along transverse suture and on postalar callus. Scutellum apicomedially sulcate, without calcars; directed upward, making an angle with the scutum of about 45°. Anepisternum a little convex, no clear division between anterior and posterior part; anterior and posterior part black pilose, widely bare in between. Anepimeron entirely black pilose. Katepisternum black pilose dorsally; bare ventrally. Katatergum long microtrichose. Anatergum short microtrichose. Other pleurae bare. Calypter greyish brown, halter yellow with dark grey knob.

Wing: hyaline, except blackish on anterobasal 2/3; microtrichose, except on 1st costal cell, anterobasal 1/2 of 2nd costal cell, basal 1/10 of cell r1, basal 1/4 of cell br, posterobasal 2/3 of cell bm, anterobasal 1/4 of cell cup.

Legs: yellowish brown, except tarsi and hind tibia yellow; black pilose, except yellow pilose on hind tibia, hind tarsus and apical three tarsomeres of other tarsi. Metatibiae strongly widened, with greatest width slightly apically of middle, about 1.5 times as wide as posterior femur at largest width; with strong excavation at cicatrice (lateral view); pilosity about half as long as width of tibia. Hind-basitarsus enlarged; almost twice as wide as apex of metatibia in dorsal view. Coxae and trochanters brown, with black pile.

Abdomen. Oval, wider than thorax, with largest width at posterior margin of tergite 2; entirely shining brown; white pilose. All sternites shining brown; pale pilose.

Male. unknown.

Diagnosis. Recognized by the following combination of characters: scutellum sulcate, alula entirely microtrichose, hind tibia yellow and yellow pilose.

Distribution. Only known from Brazil.

Figures

FIGURES 63 – 71. 63 – 66. Hypselosyrphus amazonicus female (holotype). 63. habitus dorsal; 64. habitus lateral; 65. scutellum; 66. wing. 67. Hypselosyrphus anax male (holotype), habitus dorsal. Photo: American Museum of Natural History. 68 – 69. Hypselosyrphus corbiculipes female (holotype). 68. habitus dorsal; 69. habitus lateral. 70 – 71. Hypselosyrphus helvus female (holotype). 70. habitus dorsal; 71. habitus lateral.