Quichuana pogonosa, FLUKE, 1937: 11

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 : 107-108

QUICHUANA POGONOSA FLUKE, 1937: 11

FIGURE 55

Fluke (1937) described Q. pogonosa from a male holotype, but also examined eight additional males and females. This material was not examined here; instead, 13 specimens of Q. pogonosa from the type locality ( Brazil, Nova Teutonia), and collected by Fritz Plaumann, were studied.

Diagnostic features

Male

Frontal triangle with a ridge dorsally; scape, pedicel, and basoflagellomere black, although basoflagellomere lighter, widening towards the apex (bf = 1.6, N = 2) ( Fig. 55 ); arista red; frontal prominence black, except for a very narrow red area at the apex laterally; black face with golden yellow hairs, and with a central shiny stripe and two lateral shiny stripes outlined by white pollinosity (the central stripe reaching the mouth edge but not the antennae, and the lateral stripes reaching the antennae but not the mouth edge); scutum, pleuron, and scutellum black; scutum with two medial pollinose stripes extending on the anterior threequarters of the scutum; scutum extensively covered with golden yellow hairs and with black hairs on the area above the wing insertion; scutellum wholly covered with golden yellow hairs; PAPT posterodorsally and NP with tufts of golden yellow hairs; PC with long golden yellow hairs composing a group more inconspicuous than that on PAPT and NP; legs black, except for the red to dark-red tarsi; metafemur swollen (maximum width about the same as the frontal triangle length), and metatibia conspicuously curved; cells R, BM, CuP, and alula anteriorly with conspicuous bare areas; abdomen black; tergum I with a moustache arrangement of golden yellow hairs with a central gap; terga II–IV with golden yellow hairs and a band of short, black, posteriorly directed hairs of variable length on the posterior margin; genitalia illustrated in Thompson (1972).

Female

Same as the male except for an inconspicuous dome on the area between the frons and the frontal prominence; basoflagellomere oval (bf = 1.4–1.7, N = 3) [see fig. 14 in Fluke (1937) and fig. 8 in Hull (1946)]; scutellum sometimes dark brown; legs lighter, at least on tibiae and the apices of femora.

Material examined

Additional material: BRAZIL, Nova Teutonia : 1m, 27°11 ′ B, 52°23 ′ L, 1.xi.1937, leg. Fritz Plaumann (Brit. Mus. 1937-265); 1m, 27°11 ′ B, 52°23 ′ L, 3.xii.1938, leg. Fritz Plaumann (Brit. Mus. 1939-66); 1m, 27°11 ′ B, 52°23 ′ L, 21.x.1939, leg. Fritz Plaumann (B.M. 1950-123) ( NHM) ; 1m, 27°11 ′ B, 52°23 ′ L, x.1975, leg. Fritz Plaumann ( USNM ENT 00036200 ) ; 1m, 27°11 ′ B, 52°23 ′ L, 300–500 m, xi.1971, leg. Fritz Plaumann, FCT collection 1974–75 ( USNM ENT 00036199 ) ( USNM) ; 1f, Santa Catarina, 27°11 ′ B, 52°23 ′ L, 24.xi.1955, leg. Fritz Plaumann, (B.M. 1957- 341) ; 1f, 24.x.1938, leg. Fritz Plaumann, det. as Quichuana pogonosa by N.P. Wyatt 1986 (Brit. Mus. 1939-66); 1f, xii.1938, leg. Fritz Plaumann, det. as Quichuana pogonosa by C.H. Curran (Brit. Mus. 1939-122); 1f, 24.x.1938, leg. Fritz Plaumann, det. as Quichuana pogonosa by C.H. Curran (Brit. Mus. 1939-66); 1f, 12.x.1938, leg. Fritz Plaumann, det. as Quichuana pogonosa by C.H. Curran (Brit. Mus. 1936-682); 1f, 28.ix.1939, det. as Quichuana pogonosa by C.H. Curran (B.M. 1950-123) ( NHM) ; 1f, xi.1972, leg. Fritz Plaumann, det. as Quichuana pogonosa by FCT and belonging to his collection 1974-75 ( USNM ENT 00036201 ) ; 1f, 300–500 m, xi.1971, det. as Quichuana pogonosa by FCT, leg. Fritz Plaumann ( USNM ENT 00036198 ) ( USNM) .

Range

Brazil.

Taxonomic notes

Small to medium size species (female, 9.6–11.5 mm, N = 3; male, 7.9–9 mm, N = 2) with moderately broad abdomen; according to Fluke (1937) Q. pogonosa is very similar to Q. sylvicola , but it is even more similar to Q. borgmeieri ; in Q. pogonosa the basoflagellomere is oval (female, bf = 1.4–1.7), there is a ridge between the frons and the frontal prominence and the alula has an area bare of microtrichia anteriorly, whereas in Q. sylvicola the basoflagellomere is conspicuously elongate (bf = 2.3), there is no ridge, and the alula is wholly microtrichose. To separate Q. pogonosa from Q. borgmeieri , see ‘Taxonomic notes’ under this species.

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).