Quichuana boliviana, 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 : 81-83

QUICHUANA BOLIVIANA RICARTE & ROTHERAY SP. NOV.

FIGURE 9

Description

Female

Head: Hairs denser on the upper surface of the eye than the lower surface; lower half of the eye with whitish hairs becoming darker towards the top of the eye; vertex and frons black; ocellar triangle and surface immediately behind with long black hairs; upper area of the frons greyish pollinose; frons with both black and light-brown hairs intermixed, although the light-brown hairs are more abundant on the upper area of the frons and the full length of the frontal eye margins; whole length of the eye margins narrowly pollinose; reddish scape and pedicel, with black hairs; basoflagellomere red, although darkened dorsally; basoflagellomere oval ( Fig. 9 ); bf = 1.2; frontal prominence brownish below and to the sides of the antennae; frontal prominence with sparse pollinosity below the antennae; black face, with brownish white hairs and, near the mouth edge, silver white hairs; face with a central, smooth, bare area; white pollinosity restricted to a lateral arc-shaped marking, touching the eyes; genae and occiput white pollinose; occiput with white hairs and, on the upper third, with a line of long black hairs.

Thorax: Scutum ground colour black, with black pollinosity; scutum with two medial greyish pollinose stripes reaching the posterior margin of the scutum, and diverging posteriorly; scutum with brownish hairs intermixed with scattered black hairs (area above the wings and anterior part of PC with black hairs); NP, PAPT posterodorsally and PC posteriorly with conspicuous tufts of golden yellow hairs (golden yellow hairs on PC scarcer); dorsal area of AEP only with long pale hairs; anterior and posterior spiracle pale; scutellum brownish black, with long brown hairs; femora extensively black, with red on the following areas: apical quarter of the profemur, apical third of the mesofemur, and apical fourth of the metafemur; pro- and mesotibia extensively red; metatibia red at the apex and base; tarsi red; femora and tibiae mostly with pale hairs; wing lightly but conspicuously brown pigmented anteriorly, even lighter apically; wing wholly microtrichose; calypter brown centrally and black marginally.

Abdomen: Extensively dull black; tergum I with two triangular groups of golden yellow hairs obscuring the background colour of the tergum, and separated for a distance of nearly a third of the tergum width; tergum II with two very inconspicuous reddish markings laterally; tergum III with two small elongate red markings on the anterior margin; posterior margin of terga II–IV laterally fringed with conspicuous, adpressed, golden yellow hairs; terga II–IV with light-yellow erect hairs, except for a semicircular band of posteriorly directed black hairs on the posterior margin (the band of black hairs only reaches the lateral margins on tergum II); black sterna, with long pale hairs.

Male

Unknown. Etymology

The epithet ‘ boliviana ’ means ‘Bolivian’ and refers to the country of the type locality.

Material examined

Holotype: 1f (antennal arista missing), Typus!/Bolivia- Yungas, 22.7.06, Von Coroico 1700 m (date and altitude handwritten)/Coll W Schnuse, 1911–3/ ♀ / Myiathropa fasciata S. var. nigriventris (handwritten)/Staatl. Museum für Tierkunde, Dresden (USNM ENT 00022384) (SNSD).

This specimen is labelled as ‘ Typus!’ presumably of the variety nigriventris of M. fasciata , but no reference to this variety has been found in the literature. Thus, this is likely to be an unpublished manuscript label. This specimen cannot be part of the type material of the species M. fasciata because this species was described from Peruvian specimens, according to Sack (1941).

Range

Bolivia.

Taxonomic notes

Large species (12.5 mm) with broad abdomen; most similar to females of Q. fasciata and Q. hermosa , but lacking the red markings on terga II–III of these two species; additionally, in Q. boliviana sp. nov., the tufts of hairs on the pleural plates as well as the dense groups of hairs on tergum I are golden yellow, whereas in Q. fasciata and Q. hermosa the tufts are paler, white to yellowish white.

QUICHUANA BORGMEIERI LANE & CARRERA, 1944 QUICHUANA BORGMEIERI LANE & CARRERA, 1944: 206

The holotype (MZUSP) is a female with the right metaleg detached and pasted to a label attached to the pin. Lane & Carrera (1944) provide a detailed description. The puparium of this adult, also described is attached to the pin and was reared from a larva collected in water contained in internodes of giant bamboo in a countryside park (‘Horto Forestal de Cantareira’) in the State of São Paulo, Brazil, on 20.v.1943, by D.C. Alves and J. Lamosa ( Lane & Carrera, 1944).

Diagnostic features

Female

Basoflagellomere oval; bf = 1.9; face pollinose, with a central shiny stripe and two lateral shiny stripes; NP, PAPT posterodorsally, PC and tergum I with dense groups of golden yellow hairs; cells CuP and BM extensively bare of microtrichia, cells CuA1 and DM with narrow bare areas basally, area of cell R behind the spurious vein extensively bare.

Male

Unknown.

Material examined

Holotype (see data above): examination of the holotype was on the basis of four images provided by Carlos J. Einicker-Lamas ( MZUSP) (body in lateral and dorsal view, and head in lateral and front view).

Range

Brazil.

Taxonomic notes

Medium size species (11.7 mm) that, according to Lane & Carrera (1944), is similar to Quichuana parisii Ceresa, 1934 and Quichuana sepiapennis Hull, 1943 , but actually is most similar to Q. pogonosa : in Q. borgmeieri , the frons and dorsal part of the frontal prominence are flat, but in Q. pogonosa there is an inconspicuous ridge between them; the face has silver white hairs, whereas in Q. pogonosa the facial hairs are golden yellow; in Q. borgmeieri bf is 1.9, but in Q. pogonosa bf is 1.4–1.7; according to Lane & Carrera (1944), in Q. borgmeieri tergum III has only pale hairs and tergum V has golden yellow hairs on the anterior margin, but in Q. pogonosa tergum III has short, black, posteriorly directed hairs on the posterior margin and tergum V has no golden yellow hairs.

QUICHUANA BREVICERA HULL, 1946 STAT. PROM.

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).