Quichuana solitaria, Ricarte & Marcos-García & Hancock & Rotheray, 2012

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 : 115

QUICHUANA SOLITARIA RICARTE & MARCOS- GARCÍA SP. NOV.

FIGURE 12

Description

Female

Head: Eye hairs brown and denser on the upper third of the eye, with white, sparser hairs on the remaining area; ocellar triangle with black hairs; frons with black laterally directed hairs and sparse brown pollinosity medially on the eye margins from the frontal prominence to the ocellar triangle; dorsal area of the frontal prominence with anteriorly directed hairs; frons and frontal prominence dorsally with lightyellow hairs; scape and pedicel extensively black, only narrowly red on the pedicel apically; basoflagellomere oval ( Fig. 12 ), dark red; bf = 1.4; ventral area of the frontal prominence white pollinose; face black, with long yellowish white hairs, except for a bare central shiny stripe from the bottom of the frontal prominence to the mouth edge; gena with a white pollinose stripe extending from the eye margin to the mouth edge; gena and occiput white pollinose on the eye margin; occiput with long yellowish white hairs and, on the upper third, a line of long black hairs intermixed.

Thorax: Black; scutum with two brownish pollinose approximated stripes extending beyond the TS but not reaching the posterior margin of the scutum; scutum with yellow hairs, but also with black hairs intermixed on the part of the scutum behind the TS; PAPT posterodorsally, NP, and PC with tufts of golden yellow hairs, not very dense on PC; scutellum dark brown, black on the lateral corners; scutellum with pale hairs only; all femora extensively black (pro- and mesofemur red on the apical half anteriorly); protibia red with darkened areas on the apical half; mesotibia red; metatibia red with darkened areas on about the central two thirds; tarsi red; femora and tibiae mostly with yellow hairs, but in all cases with some scattered black hairs or setae; wings wholly microtrichose, with the base of the anterior half lightly brown pigmented on the areas outlining the veins.

Abdomen: Tergum I with a moustache arrangement of laterally directed golden yellow hairs, separated by a gap shorter than a third of the tergum width; terga II extensively black, with two lateral triangular red markings extending on part of the lateral margins; tergum III with two lateral smaller red markings restricted on the anterior margin; terga II–IV posteriorly fringed with yellow hairs; terga II–IV with a band of black hairs on the posterior third of the tergum and reaching the lateral margins; tergum V mostly black haired.

Male

Unknown.

Etymology

The epithet ‘ solitaria ’ means ‘lonely’, and refers to the fact that this species is only known from a single specimen.

Material examined

Holotype: 1f reared from a larva collected in a bromeliad, Mexico, Chiapas, Mozotal (Ref. 218), 11–12.iv.2002, leg. MAM, CPB & GER ( CEUA).

Range

Mexico.

Taxonomic notes

Large species (13.7 mm) with broad abdomen; similar to Q. mozotalensis sp. nov., but in Q. solitaria sp. nov. the facial hairs are white, the medial pollinose stripes of the scutum faintly reach the posterior margin of the scutum, the scutellum is wholly yellow haired and the pro- and mesofemur are extensively black, whereas in Q. mozotalensis sp. nov. the facial hairs are golden yellow, the medial pollinose stripes of the scutum are narrower and do not reach the posterior margin of the scutum, the scutellum has scattered black hairs, and the pro- and mesofemur are extensively red. Various differences in the puparia of these two species, such as the body vestiture, validate these species concepts.

Figures

Figures 9–14. Quichuana right antennae, lateral inner view: 9, Quichuana boliviana sp. nov., female holotype; 10, Quichuana argentea sp. nov., female; 11, Quichuana fasciata, female lectotype; 12, Quichuana solitaria sp. nov., female holotype; 13, Quichuana tica sp. nov., female; 14, Quichuana communis sp. nov., male. Scale bars: 1 mm (top scale bar applies to Fig. 9 only).