Quichuana vicentinae, 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 : 119-120

QUICHUANA VICENTINAE RICARTE SP. NOV.

FIGURES 67 AND 68

Description

Male (holotype)

Head: Eye hairs straight and brown, slightly lighter and sparser downwards on the eye; vertical triangle black with white pollinosity on the anterior corner; ocellar triangle with long black hairs; frontal triangle black, with long black hairs, except for the eye margins bearing a line of pale hairs; basoflagellomere oval and brownish; bf = 1.4; ventral area of the frontal prominence brown with sparse pollinosity; face black, with long golden yellow hairs, except for a bare median shiny stripe from the bottom of the frontal prominence to the mouth edge; gena with a stripe of white pollinosity from the eye margin to the mouth edge; eye margins with pollinosity on gena and the whole occiput; occiput with long, golden yellow hairs and, on the upper third, a line of long black hairs.

Thorax: Black; scutum with two stripes of grey pollinosity extending on the anterior three-quarters of the scutum; scutum with golden yellow hairs and, on the half of the scutum behind the TS, a few black hairs intermixed; also black hairs on the area above the wing insertion; PAPT posterodorsally, NP, and PC with tufts of golden yellow hairs; scutellum dark brown, black on the lateral corners; scutellum mostly golden yellow haired; profemur black on the basal half and slightly darkened on the remaining area; pro- and mesotibia pale; pro- and mesotarsus pale; mesofemur darkened on the basal half; metafemur black on the basal two-thirds and lighter on the remaining area; metatibia dark brown; metatarsus pale, except for the darkened dorsal area of tarsomere 5; legs with both pale and black hairs on femora and tibiae (very few and localized black hairs on mesolegs); pro- and mesotarsus with only yellow hairs, although scattered dark-yellow hairs are intermixed; wings wholly microtrichose; wings dark-brown pigmented on the anterior third, especially on the whole cell R 2+3, except for the hyaline loop.

Abdomen: Terga II–IV each with two red markings, which, on tergum IV, are faint, narrow, and extend along most of the lateral margins; terga II-III red on the full length of the lateral margins; tergum I with a moustache arrangement of golden yellow hairs, with a central gap of about a third of the tergum width; terga II–IV pale haired, except for the black hairs on the posterior third of tergum II and posterior half of terga III–IV.

Genitalia: Superior lobes developed and curved forwards in the shape of a ‘reptilian’ head ( Fig. 67 ); superior lobes with two lateral expansions ( Fig. 67 ); surstyli heavily excavated anteriorly ( Fig. 68 ).

Female

Unknown.

Etymology

The epithet ‘ vicentinae ’ means ‘Vicentina’s’, a nickname for Vicenta Sabater Orts, my mother. This species is named for her in recognition for the love and support that she has always given me.

Material examined ( INBio )

Holotype: 1m, Quebrada Segunda , Tapantí, Prov. Cartago, Costa Rica, 1300 m, 15.vii–15.viii.1995, leg. R. Delgado, L _N_194000_559800 #6227/ INBio CRI 002 388512.

Paratypes: COSTA RICA: 1m, Río San Lorenzo , 1050 m, Tierras Morenas, Z.P. Tenorio, Prov. Guanacaste, iv.1992, leg. F. Quesada , L-N 287800, 427600, INBio CRI 000930413; 1m, Prov. Alajuela, Upala , Bijagua, Falda N.E., V. Tenorio , 1300–1865 m, 29.v.2001, leg. M. Alfaro, Libre, L_ N_295900_426650, INB0003333486 (especímenes en Atta, A. Lépiz , 4.2.2005) ; 1m, Prov. Alajuela, P.N. Volcán Tenorio, Falda N.E. Volcán Tenorio , 1300–1865 m, 29.v.2001, leg. D. Briceño, Libre. L N 295900_426650, INB0003332981; 1m, Prov. Alajuela, P.N. Volcán Tenorio, Est. Pilón, 1.5 SO C. Carmela , 700–800 m, 17.viii–15.ix.2006, leg. J.A. Azofeifa, Tp. Malaise, L_N_298212_427913#87177, INB0004037285; 1m, Prov. Alajuela, P.N. Volcán Tenorio, Valle Río Roble , Palmital arriba la caliza , 1000–1100 m, 6.x–12.xi.2006, leg. J.A. Azofeifa, Tp. Malaise, L_N_ 296500_426300#87467, INB0004049243.

Range

Costa Rica.

Taxonomic notes

Large species (13.4 mm) with broad abdomen; similar to Q. inbio sp. nov., Q. salvadorensis sp. nov., and Q. tica sp. nov., although males of these species can be readily separated from Q. vicentinae sp. nov. by the shape of the superior lobes and surstyli of the genitalia ( Figs 40–42 , 58, 59 , 62–64 , 67, 68 ); otherwise, Q. vicentinae sp. nov. can be separated from Q. inbiosp . nov. and Q. tica sp. nov. by the presence of a conspicuous group of golden yellow hairs on the PC, whereas these hairs are mainly black in Q. inbio sp. nov. and Q. tica sp. nov.

Figures

Figures 67–68. Quichuana vicentinae sp. nov. male genitalia, lateral view: 67, hypandrium, and detail of the lateral expansions of the superior lobes in anterior view; 68, epandrium; le, lateral expansion. Scale bar: 1 mm.

Figures 40–42. Quichuana inbio sp. nov. male genitalia: 40, hypandrium, lateral view; 41, epandrium, lateral view; 42, left part of epandrium, anterior view. Scale bar: 1 mm.

Figures 58–59. Quichuana salvadorensis sp. nov. male holotype genitalia, lateral view: 58, hypandrium; 59, epandrium. Scale bar: 1 mm.

Figures 62–64. Quichuana tica sp. nov. male genitalia: 62, hypandrium, lateral view; 63, epandrium, lateral view; 64, left part of epandrium, anterior view. Scale bar: 1 mm.