Sarmientoia similis Mielke, 1967

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 : 11

Sarmientoia similis Mielke, 1967

( Fig. 29-30, 32, 35 , 107 , 113 , 128 )

Males (mean FW length = 29.7 mm [28.1-31.2, n = 10]) of S. similis from Rondônia are as originally described (Mielke 1967a), but vary on the dorsum from mostly dark brown to having considerable rich red-brown overscaling on the hindwing and base of the forewing. Females (FW length = 32.7, 33.4 mm) have broader wings than do males, are dull blackish brown, and have forewing macules as on males, but these are white instead of pale yellow. The dorsal hindwing has vague black quadrate macules, that in the discal cell being most prominent. The discal macules on the ventral hindwing are vague and without pale centers to absent.

Male genitalia of S. similis from Rondônia ( Fig. 107 ) are like those shown by Mielke (1967a). Female genitalia ( Fig. 113 ), previously undescribed, have a narrow and quadrate lamella postvaginalis with a narrow and shallow notch on the caudal edge, a broad lamella antevaginalis that is prominently serrated on its caudal edge, no obvious antrum, and a long ductus bursae that is membranous except for a weakly sclerotized band just before the globular corpus bursae.

Sarmientoia similis is common in central Rondônia, with records throughout most of the year (not recorded in September and October), but two-thirds are in the wet season ( Fig. 128 ). This species was known only from the two male types (one from Taperinha in Pará and the other from Amazonas, Brazil) and apparently has not been subsequently reported; the records from Rondônia extend the distribution southward .

Figures

Figure 26-37. Salatis, Sarmientoia, and Dyscophellus (from BRAZIL: Rondônia, unless noted otherwise; dorsum and venter of same specimens). 26-27) Salatis salatis male, 3 km E of Fazenda Rancho Grande, 15 Jun 1993. 28, 31) Salatis salatis male, 5 km S of Cacaulândia, 18 Apr 1995. 29-30) Sarmientoia similis male, Fazenda Rancho Grande, 20 Apr 1991. 32, 35) Sarmientoia similis female, 5 km S of Cacaulândia, 27 Mar 1994. 33, 36) Dyscophellus sp. (D. sebaldus?) female, COSTA RICA: Heredia Prov.; Chilamate, 22 Mar 1989. 34, 37) D. diaphorus male, Fazenda Rancho Grande, 9 Jun 1993.

Figure 104-110. Female genitalia (ventral view) of Dyscophellus and Sarmientoia (from BRAZIL: Rondônia, unless noted otherwise). 104) D. phraxanor, ECUADOR (GTA #7210). 105) D. porcius porcius, COSTA RICA (GTA #7201). 106) Dyscophellus sp. (D. sebaldus?), COSTA RICA (GTA #7205). 107) S. similis (GTA #7224). 108) D. erythras (GTA #7206). 109) D. ramon, COSTA RICA (GTA #7208). 110) Dyscophellus sp. (D. diaphorus?), COSTA RICA (GTA #7209).

Figure 111-114. Male genitalia of Salatis, Euriphellus, Sarmientoia, and Nicephellus (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. 111) Salatis salatis (GTA #3487). 112) E. euribates euribates (GTA #1801), including flattened view of caudal end of valva. 113) Sarmientoia similis (GTA #7226), including flattened view of caudal end of valva, lateral view of juxta, and dorsal view of cephalad end of aedeagus. 114) N. nicephorus (GTA #3137), including dorsal and flattened views of caudal end of valva and lateral view of juxta.

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.