Pigritia gruis Adamski

Adamski, David, 2013, Review of the Blastobasinae of Costa Rica (Lepidoptera: Gelechioidea: Blastobasidae), Zootaxa 3618 (1), pp. 1-223 : 151-152

Pigritia gruis Adamski , new species

( Figs. 245–246 , 414 , Map 54)

Diagnosis.— Pigritia gruis possesses the following unique combination of features: an uncus and gnathos that is present; a basally hinged apical process of the ventral part of the valva; a narrow digitate process of the dorsal part of the valva; a proximal flange with 2−3 rows of setae along dorsal margin, sparsely microtrichiate near middle, densely setose on a broadly rounded ridge below middle; and a bandlike juxta. Many of these characters are shared with other Pigrita, however, no other congener possesses this combination.

Description.—Head: Vertex and frontoclypeus pale brown. Labial palpus diminutive in male, extending about 1/2 distance between ventral margin of frontoclypeus and antennal base within depression of ventromesial part of frontoclypeus [female unknown]. Antenna pale brown. Proboscis pale brown.

Thorax: Tegula and mesonotum pale brown. Legs brown intermixed with pale-brown scales near midsegment and along apical margins of all segments and tarsomeres. Forewing ( Fig. 414 ): Length 4.6 mm (n = 1), pale brown intermixed with white scales and a few brown scales; cell with two brown spots on apical end along crossvein. Undersurface brown. Hindwing: Translucent pale brown gradually darkening to apex.

Abdomen: Male genitalia: ( Figs. 245–246 ): Uncus short, parallelsided from widened base, narrowly rounded apically, straight, shorter than width of anal opening. Gnathos, thin band, confluent with tegumen; ventroposterior margin entire. Sockets of tergal setae not extending beyond midlength of tegumen. Valva divided; ventral part basally protracting inwardly, broadly rounded apicoventrally, widening to middle, narrowing to dilated margin beneath base of apical process; process hinged basally, broadly curved inwardly, setose on outer surface, planate on inner surface, with protuberant setose ridge at base; dorsal part with apical portion of costa extending dorsally, forming setose digitate process; process outwardly curved at 2/3; basal ridge of digitate process extending ventrally, fusing with dorsolateral margin of proximal flange; flange, subellipsoidal, slightly protuberant, projecting laterally, slightly widened dorsally from base, with 2–3 rows of setae along serpentine dorsal margin, sparsely microtrichiate near middle, densely setose on broadly rounded ridge below middle; margin entire. Juxta bandlike. Vinculum semicircular. Phallus and sclerite of phallus longer than valva; phallus broadly curved basally; sclerite of phallus broadly curved basally and at 2/3; anellus parallelsided from wide base, apically truncate, setose. Female Genitalia: Unknown.

Holotype, 3, “Estación Santa Rosa, Prov [incia] Guana[caste], COSTA RICA, 300 m, 24 Feb [rero]- 7 Mar [zo] 1995, A.M. Maroto, L-N-313000, 359800, # 5420, “INBio: COSTA RICA: CRI002, 212523 [barcode label], “INBio, 3 Genitalia Slide by D. Adamski, No. 2473 [yellow label].

Distribution (Map 54). Pigritia gruis is known from one collecting site in a dry-forest region southwest of the Cordillera de Guanacaste in northwestern Costa Rica.

Etymology. The specific epithet gruis is derived from the Latin grus meaning, a crane.

Figures

FIGURES 243 – 248. Male genitalia of Blastobasinae. 243 – 244, Pigritia stips (slide 2446). 245 – 246, Pigritia gruis (slide 2473). 247 – 248, Pigritia ululae (slide 2536).

FIGURES 412 – 416. Imagos of Blastobasinae. 412, Pigritia haha, holotype. 413, Pigritia stips, holotype. 414, Pigritia gruis, holotype. 415, Pigritia ululae, holotype. 416, Pigritia marjoriella Adamski, 1998.