Tabanus comosus Stone 1944

Tabanus comosus Stone (Figs 24 A–D, 25) Tabanus comosus Stone, 1944: 134 (list of species); Barretto, 1957: 88 (list of species); Fairchild, 1971: 91 (cat.); Moucha, 1976: 100 (cat.); Fairchild, 1984: 14, fig. 19, map 8 (rev.); Fairchild & Burger, 1994: 134 (cat.); Coscarón & Papavero, 2009b: 127 (cat.); Henriques et al., 2023: Supplemental table (Amazon biogeography). Distribution: Venezuela, Guyana, Brazil (Pará) (new record). Type-locality: Venezuela, Amazonas, San Fernando de Atabapo. Diagnosis: Large specimens (18–19 mm). Frons narrow (FI: 4.25), convergent at base (DI: 1.26, 1.29); palpus mostly covered by white setulae. Wing hyaline. Scutum reddish-brown, covered by gray pruinosity and with two faint dark dorsolateral integumental stripes. Legs integument light yellow with gray pruinosity and mostly covered by white setulae. Abdomen reddish-brown, covered by gray pruinosity, and with dorsomedial triangles (tergite 2 to 4) and dorsolateral stripes (tergite I to V or VI) of pale setulae, when well-preserved. Remarks: T. comosus resembles T. guyanensis. differing by having a hyaline wing, gray pruinosity on scutum, abdomen and legs, a pair of faint integumental stripes on the scutum, light yellow legs with white setulae, and a palpus mostly covered by white setulae. T. guyanensis has a wing brownish tinged at the base, dark brown calypters and orange costal cell, conspicuous integumental stripes on the scutum, scutellum with an evident white pilose spot on the lateral, legs ranging from brown to black with brown to black setulae, and palpus mostly covered by black setulae. The male is unknown. The type-locality of T. comosus is in Venezuela and this is the first time this species is recorded from Brazil, in the state of Pará. There are indeed cases of small clades or species that are present in the Guyana Shield, including Venezuela, extending their distribution to the state of Pará, east of the opening of the Amazon River (Amorim & Pires, 1996, Fig. 25; Amorim 2009). A good example is the empidine Lamprempis amazonida Bier & Rafael (Diptera: Empididae) (Bier & Rafael 2023). Examined material: Belém, Pará, [BRAZIL], Damasceno [Photographed] [1♀] [MZUSP].