G. B. Fairchild.
A New Species of Querbetia (Diptera: Tabanidae).
Psyche 79(3):213-214, 1972.

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A NEW SPECIES OF QUERBETIA
(DIPTERA: TABANIDAE) FROM PERU1
BY G. B. FAIRCHILD
Department of Entomology and Nematology
University of Florida, Gainesville, Florida 32601 While examining some tabanids in the Canadian National Collec- tion at Ottawa, I came upon a representative of a second species of the genus Querbertia Fairchild previously known by only the type- species, bequaerti ( Fairchild, I 964). This new species, also from Peru, is as follows:
Querbetia inopinatus nsp.
(Fig. I)
Female. Length 13.5 mm., of wing 10.5 mm. Resembles Q. be- quaerti closely in structure, but differs in the following respects. Frons slightly wider than in bequaerti, the bare areas dark brown, the pollinose areas golden yellow rather than black and grey. Sub- callus and basal antennal segments as in bequaerti, but dark brown, the sutures and inner bases of scapes yellowish. Third antennal seg- ment as figured, as long as frons and first two segments of antennae, or about equal to mid tibia, the basal plate yellowish brown, the style black, subshiny. Frontoclypeus and genae as in bequaerti, but the bare areas yellowish to brown, the pollinose areas yellow. Palpi yellowish brown, shiny, ale-haired, more slender than in bequaerti. Proboscis brown, the sclerotized strip on labella narrower than in bequaerti. Mesonoturn subshiny, blackish brown, with a pair of dorsolateral golden-haired stripes, and sides including notopleural lobes golden- haired. Scutellum dark brown in ground color, but densely golden pollinose and golden-haired. Pleura blackish, but with pronotal lobes and mesopleura extensively dull yellowish pollinose. Coxae blackish brown, femora dark yellow, tibiae light yellow, the basal halves or less white and white-haired, tarsi yellow, all clothed with yellow hairs except bases of tibiae. Wings with venation as in bequaerti, but the whole wing yellowish, more intense in costal cell and anterior half.
Abdomen slender, rather long, subshiny, dark brown. First seg-
ment almost divided by a broad posterior median sulcus, dark-haired except for a narrow fringe of dark yellow hairs. Second segment 'Florida Agricultural Experiment Stations Journal Series No. 4501. Manuscript received by the editor August 1,1972



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Psyche
[September
Figure 1.
Antenna of Querbetia inopinatus nsp.
largely black-haired, with a broader ~osterior fringe of pale yellow hairs. Third and fourth segments with still broader pale-haired mar- gins, while segments 5 to 7 are wholly dark-haired. Beneath the abdomen is subshiny, brown, mainly dark-haired, but with sparse pale hair fringes on first 2 visible segments. Holotype $2, Avispas, Madre de Dios, Peru, 20-30 Sept. 1962, L. E. Pefia coll. In Canadian National Collection, Ottawa. The close structural resemblance of this species to Q. bequaerti (Fairchild 1964) indicates that the antennae of the latter were prob- ably also similar. The color differences are considerable, however, and though it is possible that the present species is no more than a subspecies of bequaerti, much more material would be necessary to settle the matter. This specimen does not appear teneral. The structure of the third antenna1 segment indicates that the genus is closest to Acanthocera, though considerably more specialized in its head characters. It is obviously a mimic of some hymenopteran, and quite possibly arboreal in habits. The superficial resemblance to the recently described Amazonian Rhinomyzine Betrequia Oldroyd (Oldroyd 1970) is remarkable, but Querbtetia lacks ocelli and hind tibia1 spurs, and has bare eyes and normal wing venation. REFERENCES
FAIRCHILD, G. B.
1964. A new genus and species of Neotropical horsefly (Dipt. Taban.) Psyche 70 (4) : 193-196, 3 figs. (1963)
OLDROYD, H.
1970. A new genus of Rhinomyzini (Dipt. Taban.), the first from South America. J. Nat. Hist., 4: 249-253, 4 figs.



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