Blastobasis vesta Adamski

Adamski, David, 2013, Review of the Blastobasinae of Costa Rica (Lepidoptera: Gelechioidea: Blastobasidae), Zootaxa 3618 (1), pp. 1-223 : 65-66

Blastobasis vesta Adamski , new species

( Figs. 21 , 119–120 , 259 , 303 , 344 , Map 19)

Diagnosis.— Blastobasis vesta is similar to B. lex in facies but differs from the latter by having an uncus that is apically narrower; a wider proximal flange of the dorsal part of the valva; and a smaller phallus.

Description.—Head: Vertex and frontoclypeus grayish brown. Outer surface of labial palpus with segment 1 brown, segment 2 brown intermixed with pale-brown scales along apical margin, segment 3 pale-brown intermixed with few brown scales; inner surface pale brown. Antenna pale grayish brown; first flagellomere in male dilated, inner surface of dilated part with 43 palmate sex scales (n=1), ( Fig. 303 ). Proboscis pale grayish brown.

Thorax: Tegula and mesonotum with grayish-brown scales tipped with pale grayish brown. Legs brown intermixed with pale-brown scales near midsegments and apical margins of all segments and tarsomeres. Forewing ( Fig. 344 ): Length 5.1–7.4 mm (n = 9), with grayish-brown scales tipped with pale grayish brown; base dark abruptly brightening slightly beyond base to submedian fascia; submedian fascia complete or incomplete; cell with three spots, one near middle [obliterated by submedian fascia in some specimens], two on apical end along crossvein; area between crossvein and apex darker than area near middle; marginal spots present. Undersurface brown. Venation ( Fig. 21 ) with M3 closer to M2 along basal 1/3 than distance between M3 and CuA1; cubital veins divergent from bases; CuA1 straight, CuA2 acutely curved basally. Hindwing: Translucent pale brown gradually darkening to apex. Venation ( Fig. 21 ) with anterior part of cell closed, posterior part of cell open; cubitus 4- branched with all veins arising submarginally from cubitus.

Abdomen: Male genitalia ( Figs. 119–120 ): Uncus narrowing from widened base, narrowly rounded apically, slightly downcurved, sparsely setose, shorter in length than width of anal opening. Dorsal strut of tegumen absent. Gnathos wide, confluent with tegumen, posteroventral margin slightly protracted mesially, narrowly bidentate; midwidth of pigmented part of gnathos wider than width of uncus. Sockets of tergal setae not extending beyond midlength of tegumen. Valva divided; ventral part 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 1/5, upturned near 1/5 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 slightly curved inwardly; area beneath costa overlaid with sparse microtrichiate membrane, extending above and below phallus to opposite side; basal ridge of digitate process protracting diagonally ventrally fusing with dorsolateral ridge of proximal flange; ventral margin of proximal flange slightly cleft, extending toward a broadly rounded, lateral ridge; membrane beneath costa with sparse microtrichiae. Juxta bandlike. Vinculum semicircular. Phallus bulbous basally; phallus and sclerite of phallus longer than valva; sclerite of phallus sigmoid-shaped; anellus gradually narrowing from base, apically truncate, setose. Female Genitalia ( Fig. 259 ): Apophyses posteriores at least 2X longer than apophyses anteriores. Ostium bursae within sparsely microtrichiate membrane, slightly posterior to seventh segment; wide duct connecting to dilated part of ductus bursae and inception of ductus seminalis from shared point; inception of ductus seminalis near posterior margin of seventh sternum. Ductus bursae nearly 1 2/ 5X longer than apophyses posteriores, with two rows of imbricate platelets within anterior 1/3, gradually becoming sparser posteriorly. Corpus bursae elongate, spinulate; signum spinate, arising from small, rounded base near middle.

Holotype, 3, “Est[ación] Maritza, 600 m, lado O Vol[can] Orosi, Prov[incia] Guanacaste, Costa Rica, D. Brenes, 27 Feb [rero]- 11 Mar [zo] 1992, L-N-326900, 373000”, “INBio: COSTA RICA: CRI000, 695050” [barcode label], “INBio 3 Genitalia Slide by D. Adamski, No. 3517” [yellow label].

Paratypes (8 3, 4 ƤƤ): 3 3, same data as for holotype except, “CRI000, 744672”, “Slide No. 3511”; “CRI000, 695036”, “Slide No. 3516”, “Wing Slide No. 7051”; “CRI000, 695018”, “Slide No. 3518”, “USNM 83851”; 1 3, “Z. Fuentes, 27 Feb.-10 Mar. 1992 ”, “CRI000, 437002”, “Slide No. 3520”, “USNM 83852”; 1 3, “A. Martin”, “CRI000, 733561”, “Slide No. 3524”; 1 3, “A Gutierrez, 28 Feb.-10 Mar. 1992 ”, “CRI000, 681619”, “Slide No. 3504”, “USNM 83853”; 1 3, “K. Taylor”, “CRI000, 702375”, “Slide No. 3515”; 1 3, “ 600 m, D. Garcia, 28 Feb.-10 Mar. 1992 ”, “CRI000, 695306”, “Slide No. 3539”; 4 ƤƤ, “II Curso Parataxonomos, Ago. 1990 ”, “CRI000, 391939”, “Slide No. 6015”; “CRI000, 391899”, “Slide No. 6016”; “CRI000, 575955”; “CRI000, 576168”, [9 in INBio, 3 in USNM].

Distribution (Map 19). Blastobasis vesta is known from one collecting site on the western most part of the Cordillera de Guanacaste in western Costa Rica.

Etymology. The specific epithet vesta is chosen in honor of Vesta , daughter of Saturn and Ops.

Figures

FIGURES 21 – 30. Wing venation of Blastobasinae. 21, Blastobasis vesta (slide 7051). 22, Blastobasis nivis (slide 7048). 23, Blastobasis phaedra (slide 7042). 24, Blastobasis aedes (slide 7050). 25, Blastobasis dicionis (slide 7039). 26, Hypatopa cladis (slide 7005). 27, Hypatopa juno (slide 7033). 28, Hypatopa pica (slide 7014). 29, Hypatopa hecate (slide 7015). 30, Hypatopa crux (slide 7035).

FIGURES 117 – 122. Male genitalia of Blastobasinae. 117 – 118, Blastobasis lex (slide 3488). 119 – 120, Blastobasis vesta (slide 3517). 121 – 122, Blastobasis nivis (slide 3581).

FIGURES 257 – 259. Female genitalia of Blastobasinae. 257, Blastobasis graminea Adamski, 1999 (Slide 83226). 258, Blastobasis coffeaella (Busck, 1925) (Slide 83227). 259, Blastobasis vesta (Slide 6016).

FIGURES 300 – 307. Male sex scales on first flagellomere of Blastobasis. 300, Blastobasis deliciolarum. 301, Blastobasis abollae. 302, Blastobasis lex. 303, Blastobasis vesta. 304, Blastobasis nivis. 305, Blastobasis phaedra. 306, Blastobasis aedes. 307, Blastobasis tapetae.

FIGURES 344 – 351. Imagos of Blastobasinae. 344, Blastobasis abollae, holotype. 345, Blastobasis lex, holotype. 346, Blastobasis vesta, holotype. 347, Blastobasis nivis, holotype. 348, Blastobasis phaedra, holotype. 349, Blastobasis aedes, holotype. 350, Blastobasis tapetae, holotype. 351, Blastobasis rotae, holotype.