Blastobasis chanes Adamski

Adamski, David, 2013, Review of the Blastobasinae of Costa Rica (Lepidoptera: Gelechioidea: Blastobasidae), Zootaxa 3618 (1), pp. 1-223 : 55-56

Blastobasis chanes Adamski , new species

( Figs. 103–104 , 295 , 338 , Map 15)

Diagnosis.— Blastobasis chanes is similar to B. litis in facies but differs from the latter by having the sockets of tergal setae not extending beyond the midlength of the tegumen; and a narrower apicoventral margin of the proximal flange of the dorsal part of the valva. B. chanes also has a sclerite of phallus that is shallowly sigmoidshaped; and an anellus that is narrowly truncate apically and setose on apical 1/2 that are lacking in B. litis . .

Description.—Head: Vertex, frontoclypeus pale brown. Outer surface of labial palpus brown intermixed with pale-brown scales along apical margins of segments 1–2, inner surface paler. Antenna pale brown; first flagellomere in male dilated, inner surface of dilated part with 7 palmate sex scales (n=1), ( Fig. 295 ). Proboscis pale brown.

Thorax: Tegula and mesonotum pale brown. Legs brown intermixed with pale-brown scales near midsegments and apical margins of all segments and tarsomeres. Forewing ( Fig. 338 ): Length 4.0–4.5 mm (n = 3), pale brown intermixed with few brown scales; cell with a short, brown streak near middle and two brown spots on apical end along crossvein. Undersurface brown. Hindwing: Translucent pale brown.

Abdomen: Male genitalia ( Figs. 103–104 ): Uncus slightly narrowed from base, narrowly rounded apically, slightly downcurved, sparsely setose, about equal in length to width of anal opening. Dorsal strut of tegumen absent. Gnathos wide, confluent with tegumen; posteroventral margin slightly protracted mesially, bidentate; midwidth of pigmented part of gnathos slightly wider than midwidth of uncus. Sockets of tergal setae not extending beyond midlength of tegumen. Valva divided; ventral part slightly angled dorsolaterally from beyond base, abruptly narrowed apically, forming inwardly curved spinelike process; process setose on outer surface, planate on inner surface; ventral margin setose from about 1/5, upturned slightly near middle, forming narrow fold to near slightly raised, setose lobe at base of apical process; dorsal part with apical portion of costa extending dorsolaterally, forming setose digitate process; digitate process abruptly curved inwardly near 2/3; area beneath costa overlaid with sparse microtrichiate membrane, extending above and below phallus to opposite side; basal ridge of digitate process protracted ventrally fusing with dorsolateral ridge of proximal flange; ventral margin of proximal flange slightly cleft, extending laterally forming broadly rounded, apicoventral ridge; proximal flange bearing row of long hairlike setae intermixed with sparse microtrichiae. Juxta bandlike. Vinculum semicircular. Phallus about equal in length to valva; sclerite of phallus subsigmoid-shaped, shorter than valva; anellus slightly narrowed apically from widened base, apically truncate, shallowly and widely emarginate apically, setose along apical 2/3. Female Genitalia: Unknown.

Holotype, 3, “F[in]ca Jenny, 30 km N de Liberia, P[arque] N[acional] Guanacaste, Prov[incia] Guan[acaste], COSTA RICA, R. Espinoza, Jun[io] 1991, L-N-316200, 364400”, “INBio: COSTA RICA: CRI000, 324008” [barcode label], “INBio 3 Genitalia Slide by D. Adamski, No. 3450” [yellow label].

Paratypes (2 3): 1 3, same data as for holotype except, “ 80 km N de Liberia, May 1991, L-N-316200, 364400”, “CRI000, 457988”, “Slide No. 3451”; 1 3, “Quepos, 80 m, P.N. Manuel Antonio, Prov. Punt., COSTA RICA, R. Zuniga, Mar. 1991, L-S-370900, 448800”, “CRI000, 648386”, “Slide No. 3942”, “USNM 83832”, [1 in INBio, 1 in USNM].

Distribution (Map 15). Blastobasis chanes is known from two collecting sites; one south of the western most part of the Cordillera de Guanacaste in the dry-forest region and one near the middle of the southern Pacific coastline.

Etymology. The specific epithet chanes is derived from the Latin chane meaning, a fish.

Figures

FIGURES 99 – 104. Male genitalia of Blastobasinae. 99 – 100, Blastobasis echus (slide 3710). 101 – 102, Blastobasis litis (slide 3632). 103 – 104, Blastobasis chanes (slide 3450).

FIGURES 292 – 299. Male sex scales on first flagellomere of Blastobasis. 292, Blastobasis usurae. 293, Blastobasis echus. 294, Blastobasis litis. 295, Blastobasis chanes. 296, Blastobasis fax. 297, Blastobasis coffeaella (Busck, 1925). 298, Blastobasis rotullae. 299, Blastobasis custodis.

FIGURES 336 – 343. Imagos of Blastobasinae. 336, Blastobasis echus, holotype. 337, Blastobasis litis, holotype. 338, Blastobasis chanes, holotype. 339, Blastobasis fax, holotype. 340, Blastobasis coffeaella (Busck, 1925). 341, Blastobasis rotullae, holotype. 342, Blastobasis custodis, holotype. 343, Blastobasis deliciolarum, holotype.