Quichuana melas, 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 : 101-102

QUICHUANA MELAS RICARTE & MARCOS- GARCÍA SP. NOV.

FIGURE 53

Description

Male (holotype)

Head: Eye hairs darker and denser on the upper half; vertical triangle shiny black, with long black hairs on the ocellar triangle; frontal triangle extensively shiny black, with pollinosity on the upper corner and on the eye margins; frontal triangle with long, anteriorly directed, black hairs; antenna thinly pollinose, blackish, with arista reddish; basoflagellomere as long as the pedicel or slightly shorter ( Fig. 53 ); bf = 1.5; face extensively shiny black, only narrowly white pollinose on the eye margins; face with long white hairs except for a central bare stripe from the antennae to the mouth edge.

Thorax: Scutum and pleuron extensively black haired; scutum with two medial white pollinose stripes extending to the TS or slightly beyond; PC with long black hairs; AEP with long black hairs at least dorsally; anterior spiracle blackish and posterior spiracle whitish; dark-brown scutellum with long black hairs centrally and longer light-brown hairs posteriorly; legs extensively black, only tibiae and apical tarsomeres dorsally paler; legs with black hairs, except for scattered pale hairs on tarsi; wings anteriorly pigmented and bare of microtrichia on extensive areas of cells BM and CuP, and smaller areas of cells DM and CuA1; calypteres black.

Abdomen: Abdomen shiny black except for an area on the anterior margin of tergum II; tergum I with a moustache arrangement of laterally directed whitish yellow hairs; terga II–IV extensively black haired; tergum II with long black hairs on the lateral margins, decreasing in length backwards; sterna with long white hairs centrally.

Genitalia: Same as that in Q. cincta ( Figs 28, 29 ).

Female

Same as the male, except frons with an anteriorly directed chevron of pollinosity dorsally and a medial pollinose stripe ventrally; frons with blackish hairs, posteriorly or laterally directed on the chevron and anteriorly directed on the rest of the frons and dorsal area of the frontal prominence; frons with long white hairs on the eye margins; basoflagellomere about 1.5 ¥ longer than the pedicel; scutum covered with sparse pollinosity, slightly more conspicuous than that in the male; scutum with two medial pollinose stripes extending conspicuously beyond the TS; scutum with white hairs and, on the half of the scutum behind the TS, scattered longer black hairs intermixed; PAPT and AEP extensively black haired; scutellum with yellowish hairs; metafemur, and meso- and metatibia white-haired; tergum I with white hairs; tergum II mainly with short white hairs, but with black hairs on the lateral margins.

Etymology

The Greek epithet ‘ melas ’, means ‘black’ and refers to the absence of bright hairs on the body and the overall dark appearance of this species.

Material examined

Holotype: 1m with puparium, Mexico, Chiapas, Boquerón , 18.vii2003, leg. MAM, GER & EGH (Ref. 217) (hind right leg detached and pasted on a label attached to the pin) ( CEUA).

Figures

Figures 51–55. Quichuana right antennae, lateral inner view: 51, Quichuana seiferti sp. nov., male paratype; 52, Quichuana zoricae sp. nov., female paratype; 53, Quichuana melas, male holotype; 54, Quichuana personata sp. nov., female holotype; 55, Quichuana pogonosa sp. nov., male from type locality. Scale bars: 1 mm (lower bar applies to Fig. 55 only).

Figures 28–29. Quichuana cincta sp. nov. male genitalia, lateral view: 28, hypandrium; 29, epandrium. Scale bar: 1 mm.