Koleps angulatus Adamski

Adamski, David, 2013, Review of the Blastobasinae of Costa Rica (Lepidoptera: Gelechioidea: Blastobasidae), Zootaxa 3618 (1), pp. 1-223: 7-9

publication ID


publication LSID


persistent identifier


treatment provided by


scientific name

Koleps angulatus Adamski

new species

Koleps angulatus Adamski  , new species

( Figs. 51–52View FIGURES 51 – 56, 312View FIGURES 312 – 319, Map 1)

Diagnosis.— Koleps angulatus  is the only species in the genus and can be distinguished from other Blastobasinae  by the features listed in the description and diagnosis of the genus.

Description.—Head: Vertex and frontoclypeus pale grayish yellow. Outer surface of labial palpus with basal segment brown, second segment brown intermixed with pale grayish-yellow scales along apical margin, terminal segment pale grayish yellow; inner surface pale grayish yellow intermixed with few brown scales. Antennal scape and pecten pale grayish yellow, flagellum brownish gray. First flagellomere in male unmodified. Proboscis brown. Thorax: Tegula and mesonotum agouti-patterned, with brown on basal and apical 1 / 3 s, pale grayish yellow on middle 1 / 3. Legs dark brown intermixed with pale-brown scales near midtibia and along apical margins of tibia and tarsomeres. Forewing ( Fig. 312View FIGURES 312 – 319): Length 6.3 mm (n = 1), brown intermixed with pale grayish-yellow and darkbrown scales; pattern paler in and around region of cell, interrupted by a faint submedian fascia; cell with three dark-brown spots, one spot near middle, two spots on apical end along crossvein; marginal spots dark brown. Undersurface brown. Hindwing: Translucent brown.

Abdomen: Male genitalia ( Figs. 51–52View FIGURES 51 – 56): Uncus parallelsided from base to subapical region, gradually narrowed to a rounded apex, straight, sparsely setose; shorter than width of anal opening. Dorsal strut absent. Gnathos confluent with tegumen, with lateral arms narrowing from base, fused mesially forming Y-shaped, anteriorly directed process. Sockets of tergal setae not extending to midlength of tegumen. Distance between articulations of tegumen and vinculum shorter than length of valva. Valva with basal 1 / 2 narrow, parallelsided, apical 1 / 2 widening, with dorsal and ventral processes, forming irregular angular apical part; basal part of costa acutely bent about 45 °, extending to inwardly setose apical part; middle part of costa nearly straight, with row of setae along ventral margin, ventral margin setose; setae straight, longer than width of middle part; apical end of costa developed into short, setose, digitate process, juxtaposed ventrolaterally by pair of upturned, spinelike processes; ventral stem of scalloped part of paired apical processes extending ventrally, fusing with moderately elongate, cylindrical and laterally directed process; process above ventrolaterally projecting lobe bearing densely packed cluster of straight and elongate, apicomarginal setae; proximal flange absent. Juxta absent. Phallus and sclerite of phallus about as long as valva, shallowly curved from middle; sclerite of phallus acutely curved basally, slightly curved apically; anellus gradually narrowed from base, setose throughout most of length. Female Genitalia: Unknown.

MAP 1. Distribution of Koleps angulatus  (●) and Pseudokoleps akainae  (˔).

Holotype, 3, “San Luis, Monteverde, Prov[incia] Punta[renas], COSTA RICA, 1000−1350 m, Jul[io] 1994, Z. Fuentes, L-N- 250850, 449250 ”, “ INBioAbout INBio: COSTA RICA: CRIAbout CRI 002, 025727” [barcode label], “ INBioAbout INBio 3 Genitalia Slide by D. Adamski, No. 2731 ” [yellow label].

Distribution (Map 1). Koleps angulatus  is known from a single male collected from a site along the Cordillera de Tilarán in west-central Costa Rica.

Etymology. The specific epithet angulatus  is derived from the Latin angulus meaning angle, and refers to the acutely angled base of the costa of the male valva.


National Biodiversity Institute, Costa Rica


Universidade do Extremo Sul Catarinense, Bairro Universit�rio