Blastobasis achaea Adamski

Adamski, David, 2013, Review of the Blastobasinae of Costa Rica (Lepidoptera: Gelechioidea: Blastobasidae), Zootaxa 3618 (1), pp. 1-223 : 44-45

Blastobasis achaea Adamski , new species

( Figs. 89–90 , 288 , 331 , Map 11)

Diagnosis.— Blastobasis achaea is similar to B. orithyia in facies but differs from the latter by having the tergal setae not extending to the midlength of the tegumen; a more sparsely spinose apicoventral margin of the proximal flange of the dorsal part of the valva; and a narrower apical margin of the phallus.

Description.—Head: Scales on vertex, frontoclypeus brown tipped with pale brown. Outer surface of labial palpus dark brown intermixed with pale-brown scales along apical margins of segments 1–2, inner surface paler [many scales missing]. Antennal scape and pecten pale brown, flagellum brown basally gradually brightening apically first flagellomere in male dilated, inner surface of dilated part with 38 palmate sex scales (n=1), ( Fig. 288 ). Proboscis pale brown.

Thorax: Tegula and mesonotum pale brown. Legs with dark-brown scales intermixed with pale-brown scales near midsegments and along apical margins of all segments and tarsomeres. Forewing ( Fig. 331 ): Length 5.9 mm (n = 1), pale brown intermixed with brown scales tipped with pale brown and dark-brown scales; base brown; basal area beyond brown base paler than apical 2/3; median fascia faint, complete; cell with three dark-brown spots, one spot near middle, two spots on apical end along crossvein. Undersurface brown. Hindwing: Translucent pale brown.

Abdomen: Male genitalia ( Figs. 89–90 ): Uncus gradually narrowed from base, broadly rounded apically, slightly downcurved, sparsely setose, shorter than width of anal opening. Dorsal strut of tegumen wide, fusing with base of uncus. Gnathos wide, confluent with tegumen, posteroventral margin slightly protracted mesially, bidentate; midwidth of pigmented area of gnathos slightly greater than midwidth of uncus. Sockets of tergal setae not extending beyond midlength of tegumen. Valva divided; ventral part nearly parallelsided, narrowing apically, forming inwardly curved spinelike process; process setose on outer surface, planate on inner surface; ventral margin sparsely setose from beyond base, slightly upturned basally, forming narrow fold near setose lobe at base of apical process; dorsal part with apical portion of costa extending dorsolaterally, forming setose digitate process; digitate process slightly curved inwardly; area beneath costa overlaid with densely packed microtrichiate membrane extending above and below phallus to opposite side; basal ridge of digitate process protracted ventrally fusing with dorsolateral ridge of proximal flange; base of proximal flange broadly cleft, extending ventrolaterally, forming broadly rounded protuberant ridge; proximal flange bearing several conical setae intermixed with hairlike setae and sparse microtrichiae. Juxta bandlike. Vinculum semicircular. Phallus and sclerite of phallus about equal in length to valva; sclerite of phallus abruptly curved near 2/3; anellus wide basally, broadly rounded apically, setose. Female Genitalia: Unknown.

Holotype, 3, “Est[ación] Las Pailas, 800 m, P[arque] N[acional] Guan[acaste] Rincón de la Vieja, Prov[incia] Guan[acaste], COSTA RICA, 24 Nov [iembre] a 26 Ene [io] 1993, J. Sihezar & G. Rodríguez, L-N-306300, 388600”, “INBio: COSTA RICA: CRI001, 211942” [barcode label], “INBio 3 Genitalia Slide by D. Adamski, No. 3421” [yellow label].

Paratypes (4 3): 1 3, “Est. Las Pailas, P.N. Rincón de la Vieja, Prov. Guana., COSTA RICA, 21–25 Mar. 1993, D. Garcia, L-N-306300, 388600, # 2765”, “INBio: COSTA RICA: CRI001, 684296”, “Slide No. 3456”, “USNM 83782”; 2 3, “Fca. Jenny, 80 km N de Liberia, P.N. Gaunacaste, Prov. Guan., COSTA RICA, Mar. 1991, R. Espinosa, L-N-316200, 364400”, “INBio: COSTA RICA: CRI001, 326434”, “Slide No. 3448”; “INBio: COSTA RICA: CRI000, 324015”, “Slide No. 3449”; 1 3, “ Costa Rica, San José, Cuidad Colon, El Rodeo, 950 m, 21-VI-1998, C19-2221, F, Col. Kenji Nishida”, “Slide No. 4039”, “USNM 83783” [2 in INBio, 2 in USNM].

Distribution (Map 11). Blastobasis achaea is known from two collecting sites along the western most part of the Cordillera de Guanacaste in northwest Costa Rica.

Etymology. The specific epithet achaea is derived from the Roman province of Achaea , which included the whole of Greece, except Thessaly.

Figures

FIGURES 87 – 92. Male genitalia of Blastobasinae. 87 – 88, Blastobasis neniae (slide 3590). 89 – 90, Blastobasis achaea (slide 3421). 91 – 92, Blastobasis orithyia (slide 3398).

FIGURES 284 – 291. Male sex scales on first flagellomere of Blastobasis. 284, Blastobasis iuanae. 285, Blastobasis graminea Adamski, 1999. 286, Blastobasis xiphiae. 287, Blastobasis neniae. 288, Blastobasis achaea. 289, Blastobasis orithyia. 290, Blastobasis babae. 291, Blastobasis thyone.

FIGURES 328 – 335. Imagos of Blastobasinae. 328, Blastobasis xiphiae, holotype. 329, Blastobasis graminea Adamski, 1999. 330, Blastobasis neniae, holotype. 331, Blastobasis achaea, holotype. 332, Blastobasis orithyia, holotype. 333, Blastobasis babae, holotype. 334, Blastobasis thyone, holotype. 335, Blastobasis usurae, holotype.