Quichuana inca, SHANNON, 1925: 111

Ricarte, Antonio, Marcos-García, M. Ángeles, Hancock, E. G. & Rotheray, Graham E., 2012, Revision of the New World genus Quichuana Knab, 1913 (Diptera: Syrphidae), including descriptions of 24 new species, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 166 (1), pp. 72-131 : 96-97

QUICHUANA INCA SHANNON, 1925: 111

FIGURE 81

Diagnostic features

Male

Head: Frontal triangle with a conspicuous dome on the upper half (see head in lateral view), and with long black hairs centrally and yellow hairs on the eye margins ( Fig. 81 ); dorsal surface of the frontal prominence swollen; scape conspicuously shorter than pedicel or basoflagellomere ( Hull, 1946: 16, fig. 18); bf = 3; black face, with narrow lines of pollinosity from the antennae to the mouth edge, and delimiting a central, shiny, black stripe and two lateral stripes ( Hull, 1946: 16, fig. 11; 17, fig. 24).

Thorax: All hairs on PP yellow; scutum with two medial, greyish pollinose stripes extending to the anterior three-quarters of the scutum; scutum with short, posteriorly directed, yellow hairs and a few much longer black hairs intermixed on the half of the scutum behind the TS; PC and area just above the wings with black hairs, shorter than the black hairs of the rest of the scutum; pleuron with yellowish white hairs, tufted on NP, PAPT, and PC; metaepisternum with a few short, pale hairs; metafemur conspicuously swollen, reddish on the apical third; pro- and mesofemur black to dark brown; tibiae and tarsi red to reddish brown; halteres dark brown.

Abdomen ( Fig. 81 ): Black; tapering from tergum I to about the middle of tergum II, and then widening progressively until tergum IV; terga II–III with a conspicuous yellowish white pollinose band on the posterior margin; tergum I with a moustache arrangement of yellowish white hairs; terga I–II with long yellowish white hairs on the lateral margins (with the longest hairs on tergum II); terga II–IV with yellowish white hairs and scattered black hairs intermixed; hairs on the posterior margin of terga II–IV longer than those on the rest of the tergum, yellow on terga II–III, and black on tergum IV.

Female

Unknown.

Material examined

Holotype: 1m, Huascaray , Peru, 21.9/CHTTownsend Collector / Type no. 27829, U.S.N.M. (number handwritten on a red label)/ Quichuana inca Snn. (handwritten) (head and right antenna pasted on a label, right wing kept in a plastic capsule attached to the pin) ( USNM).

Range

Peru.

Taxonomic notes

Small Ceriana -like species (8.4 mm) with slender abdomen ( Fig. 81 ). To separate this species from the similar Q. brevicera and other species, see ‘Taxonomic notes’ under Q. brevicera .

Figures

Figures 80–83. Overall appearance of different Quichuana species, dorsal view. 80, Quichuana cincta, female from Mexico; scale bar = 2 mm. 81, Quichuana inca, male holotype; scale bar = 1 mm. 82, Quichuana parisii, female paralectotype, scale bar = 1 mm. 83, Quichuana undulatipila sp. nov., female paratype; scale bar = 2 mm.