Nascus broteas (Cramer, 1780)

Austin, George T., 2008, Hesperiidae of Rondônia, Brazil: Taxonomic comments on “ night ” skippers, with descriptions of new genera and species (Lepidoptera: Eudaminae), Insecta Mundi 2008 (29), pp. 1-36 : 29-30

Nascus broteas (Cramer, 1780)

( Fig. 77-78, 80-81 , 119 , 122 , 130 )

Males of N. broteas from Rondônia (mean FW length = 31.8 mm [29.9-31.8, n = 6]; see figures in Cock and Alston-Smith 1990) exhibit some variation in the width of the dark bands and margin on the ventral hindwing. Most (8 of 9) have five subapical macules, one has only four. The two females seen (FW length = 36.1 mm, n = 1) are superficially very similar to N. solon (see above). Male genitalia ( Fig. 119 ) are more or less as illustrated by Evans (1952); those shown by Williams and Bell (1934) as Nascus broteas are of N. solon . Female genitalia ( Fig. 122 ) have a narrow and quadrate lamella postvaginalis with a deep Vshaped central notch on its caudal edge. The central portion of the lamella antevaginalis is rectangular, has a central U-shaped notch on its caudal edge, overlays nearly the entire ostium bursae, and nearly reaches the caudal edge of the lamella postvaginalis.

Nascus broteas is uncommon near Cacaulândia, with records for June through November ( Fig. 130 ). The species is known from Mexico (north to San Luis Potosi) to Argentina, Paraguay, and southern Brazil ( Evans 1952, Freeman 1976, Cock and Alston-Smith 1990, de la Maza and White 1990, Warren 2000, Nuñez Bustos 2006).

Figures

Figure 74-85. Nascus (from BRAZIL: Rondônia, unless noted otherwise; dorsum and venter of same specimens). 74-75) N. salon salon female, 5 km S of Cacaulândia, 10 Jul 1993. 76, 79) N. phocus male, Fazenda Rancho Grande, 14 Aug 1993. 77-78) N. broteas male, Fazenda Rancho Grande, 16 Aug 1993. 80-81) N. broteas female, Fazenda Rancho Grande, 16 Jun 1991. 82, 85) N. phocus male, Fazenda Rancho Grande, 16 Nov 1992. 83, 84) N. phocus female, COSTA RICA: Heredia Prov.; Chilamate, 30 Mar 1989.

Figure 117-120. Male genitalia of Pseudonascus and Nascus (from BRAZIL: Rondônia). Structures shown are lateral, dorsal, and ventral views of tegumen, uncus, gnathos, and associated structures; lateral internal view of right valva; lateral view of aedeagus and associated structures; and ventral view of transtilla and juxta. 117) P. paulliniae (GTA #2460). 118) N. phocus (GTA #3534). 119) N. broteas (GTA #7211). 120) N. salon salon (GTA #1725).

Figure 121-124. Female genitalia (ventral view) of Pseudonascus and Nascus (from BRAZIL: Rondônia, unless otherwise noted). 121) N. salon salon (GTA #7229). 122) N. broteas (GTA #7228). 123) N. phocus, COSTA RICA (GTA #7230). 124) P. paulliniae (GTA #7233).

Figure 125-130. Phenology of some night skippers from central Rondônia, Brazil. 125-126) Bungalotis species. 127) Dyscophellus species. 128) Salatis salatisand Sarmientoia similis. 129) Nicephellus nicephorus and Euriphellus euribates. 130) Pseudonascus paulliniae and Nascus species.