Quichuana, Ricarte, Antonio, Marcos-García, M. Ángeles, Hancock, E. G. & Rotheray, Graham E., 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 : 95-96

QUICHUANA INBIO RICARTE & MARCOS- GARCÍA SP. NOV.

FIGURES 40–42

Description

Male (holotype)

Head: Eye hairs straight, no curved apex, brown and dense on the upper half of the eye, and slightly lighter and sparser on the lower half; vertical triangle black with white pollinosity on the anterior corner; ocellar triangle with long black hairs; frontal triangle black, with long black hairs centrally and pale hairs on the eye margins; antenna extensively pale; bf = 1; ventral area of the frontal prominence brownish with sparse pollinosity, and with a tapering pollinose stripe from the eye margin towards the antennae; black face with long white hairs, except for a bare central shiny stripe from the frontal prominence to the mouth edge; gena with a stripe of white pollinosity extending from the eye margin to the mouth edge; occiput pollinose, with long white hairs and a line of long black hairs intermixed on the upper third.

Thorax: Black; scutum with two grey pollinose stripes extending inconspicuously beyond the TS; scutum with yellow hairs and, on the half of the scutum behind the TS, black hairs intermixed; area above the wings bearing black hairs; PAPT posterodorsally and NP with tufts of golden yellow hairs; PC mainly with long black hairs; scutellum dark brown, black on lateral corners; scutellum with yellow hairs and scattered black hairs intermixed; all femora extensively black, paler on the apical quarter; pro- and mesotibia red; metatibia red, with a central dark ring and on the apical two-thirds dorsally; all tarsi red, slightly darkened on tarsomeres 4–5 dorsally; all femora and tibiae with both yellow and black hairs; tarsi mainly yellow haired but with at least a few black hairs or setae on tarsomere 5; wing extensively hyaline, only dark-brown pigmented on some areas of the very basal cells; wing microtrichose, except for some bare areas on cells R, BM, and CuP.

Abdomen: Terga II–IV each with two red markings extending on the full lateral margins and covering more than half of the tergum surface; tergum I with a moustache arrangement of golden yellow hairs, with a gap of about a third of the tergum width; terga II–IV with yellow hairs anteriorly, but black hairs on the posterior half or less.

Genitalia: Hypandrium with comma-shaped superior lobes ( Fig. 40 ); epandrium with surstyli wide at base, tapering towards the apex, slightly curved backwards in profile ( Fig. 41 ); surstyli with an excavation and a triangular process on the inner side ( Fig. 42 ).

Female

Same as the male, except frons with a band of pollinosity; dorsal part of the frons with black and yellowish white hairs intermixed; ventral part of the frons and dorsal area of the frontal prominence with black anteriorly directed hairs, adpressed near the antennae; frons with yellowish white hairs on the eye margins; antenna red, but with basoflagellomere darkened; face with yellowish white hairs, but in the same pattern as those in the male; tapering stripe of pollinosity absent on the frontal prominence; occiput with yellowish white hairs and a line of black hairs on the upper part; scutum with two medial brownish pollinose stripes tapering towards the apex and extending on the anterior three-quarters of the scutum; scutum with black hairs only on the area above the wings; PC mainly with sparse yellow hairs and scattered black hairs anteriorly; scutellum with long black hairs anteriorly and long yellow hairs posteriorly; metatibia with black markings on the central third; all tarsi red; femora, tibiae, and tarsi with both golden yellow and black hairs, except for the mesotibia with only golden yellow hairs and the tarsi with only scattered black hairs; wings sparsely microtrichose; lateral margins of terga II–III mostly red; red markings on terga II–IV cover less than half of the surface of the tergum; terga II–V with darkbrown pollinosity, but with a narrow shiny band posteriorly; terga II–IV with black hairs on the posterior half of the tergum or more.

Etymology

The noun in apposition ‘ inbio ’ refers to the INBio (Instituto Nacional de Biodiversidad, Costa Rica) where the material of this species is deposited.

Material examined ( INBio )

Holotype: 1m, San Luis, R. B. Monteverde, A. C. Arenal, Prov. Punta, Costa Rica, 1040 m, 11.ii.1994, leg. MAZ, L N 449250_250850 # 2663/ INBio CRI 001 943116.

Paratypes: COSTA RICA: 1m, San Luis, R.B. Monteverde, A.C. Arenal, Prov. Punta, Costa Rica, 1040 m, 11.ii.1994, leg. MAZ, LN 449250_250850 # 2663; 65m from the localities ‘San Luis, Monteverde, Prov. Punta’, ‘Monteverde, Est. La Casona’, ‘Prov. Guanacaste, Est. Cacao, lado suroeste del volcán’, ‘Prov. San José, Turrúbares’, ‘San Luis, Monteverde, cerro Amapola’, ‘Prov. Puntarenas, cerro Biolley, Est. Altamira’, ‘Prov. Alajuela, R. Jesús, C. la Lana, San Ramón’, ‘Prov. San José, Pérez Zeledón, Rivas, Límite P.N. Chirripó’, ‘Prov. Punta, Send ac. Pittier’, ‘Prov. Guanacaste, A.C.G. Liberia, Pque Nal Gte, Est Cacao’, ‘Prov. Punta, Monteverde, Buen Amigo’, ‘Prov. Puntarenas, Coto Brus, Z.P. las Tablas, E.B. las Alturas, S. cerro Chai’, ‘Prov. Puntarenas, Fila Cruces, 5.9 km del jardín botánico Wilson’, 1000– 2100 m, from March 1988 to January 2001, by various collectors (MAZ, Z. Fuentes, N. Obando, M. Segura, R. Villalobos, G. Carballo, M. Alfaro, Espinoza, FCT, R. Delgado, C. Cano, B. Gamboa, and J.C. Saborío); 1f, Est. La Casona, R.B. Monteverde, Prov. Punta, 1520 m, iv.1994, leg. N. Obando, L N 253250_449700 #2819, INBio CRI 001 764870; 1f, Prov. Puntarenas, P.I. la Amistad, Estación Altamira, cerro Biolley, 1766 m, 10–27.iv.2001, leg. O. Alemán, manual, L_S_ 332400_572200#62988.

Range

Costa Rica.

Taxonomic notes

Medium to large size species (11.6 mm, holotype) with broad abdomen; similar to Q. montana and Q. tica sp. nov.; Q. inbio sp. nov. can be readily separated from Q. montana by the hairs on the PC, which are mainly black in the former and are conspicuously golden yellow in the latter; additionally, the shape of the superior lobes and the surstyli differs strongly between the males of Q. inbio sp. nov. ( Figs 40–42 ) and Q. montana ( Figs 56, 57 ). To distinguish Q. inbiosp . nov. from Q. tica sp. nov., see the ‘Taxonomic notes’ under Q. tica sp. nov.

Figures

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 56–57. Quichuana montana male holotype genitalia, lateral view: 56, hypandrium; 57, epandrium. Scale bar: 1 mm.