Tabanus mucronatus Fairchild, 1961

Oliveira, Lia Pereira, Henriques, Augusto Loureiro & Krolow, Tiago Kütter, 2023, New records, descriptions, and redescriptions of male horse flies (Diptera: Tabanidae) in Brazil, EntomoBrasilis (e 1033) 16, pp. 1-7 : 3

Tabanus mucronatus Fairchild, 1961

( Figure 5 )

Description (♂)

Head ( Figures 5 A-C): Eyes contiguous, glabrous, ommatidia of the same size. Ocellar triangle orange not very evident, with gray pruinosity. Subcallus yellow pruinose. Gena and parafacial with gray pruinosity and black setulae. Central region of clypeus yellowish, margins grayish. Palpus porrect, yellow, with black and yellow setulae. Antenna orange. Scape and pedicel with black setulae. Proboscis dark brown, very short and with sparse black setulae.

Thorax ( Figures 5 A-B): Thorax dark brown with black setulae and some sparse yellow setulae. Scutellum dark brown in the midle and orange on the apex and margins, sparse black and yellow setulae. Sternum covered with gray pruinosity. Legs brown with black setulae, tibiae with some yellow setulae, anterior trochanter whitish and covered with pale setulae, posterior trochanter whitish and with black setulae. Wing hyaline with brownish costal and subcostal cells and yellowish pterostigma.

Abdomen ( Figures 5 A-B): Abdomen brown, with black setulae and some yellow setulae. Tergites 4 to 7 darkened.

Terminalia ( Figures 5 D-G): Epandrium with anterior region glabrous, posterior region with sparse black setulae. Cercus almost as wide as the epandrium and with quite long black setulae on the dorsal surface and shorter black setulae on the ventral surface. Hypoproct covered by cerci. Hypandrium + gonocoxite robust, longer than wide. Gonocoxite with a small projection at the apex. Gonocoxal apodemes slightly longer than aedeagus.

Material examined: BRAZIL • 1 male; Tocantins, Porto Nacional, Faz.[enda] São Judas Tadeu ; 27-29.iii.2015; [Malaise]; Krolow, T.K. & equipe leg .

Distribution: Bolivia (the record to Bolivia needs further confirmation), Brazil (Goiás, Maranhão, Mato Grosso, Pará, Rondônia, Tocantins) ( HENRIQUES & GORAYEB 1993; COSCARÓN & PAPAVERO 2009).

Comments: In females of this species, the apex of the abdomen is notoriously tapered, the examined male does not have such a thin abdomen. In addition, females have a median band of yellowish pruinosity and white setulae on tergites 1 to 6, the examined male does not have such characteristics, which seem to have been lost after passage of the sample in ethanol.

Figures

Figure 5. Male of Tabanus mucronatus Fairchild, 1961. A. Habitus, dorsal view; B. Habitus, lateral view; C. Head, anterior view; D-E. Epandrium, cercus and hypoproct (dorsal and ventral views, respectively); F-G. Hypandrium, gonocoxite, gonostylus and aedeagus (dorsal and ventral views respectively). Source: authors.