Bergiantina parva, Blas & Navarro, 2010

Blas, Germán San & Navarro, Fernando, 2010, Bergiantina, a new genus of agaristid moth (Lepidoptera: Noctuidae), Zootaxa 2562, pp. 24-44 : 31-32

Bergiantina parva , new species

( Figs. 5, 6, 20, 29, 34, 37, and 47)

Diagnosis. This species can be differentiated from other Bergiantina species by the following characters: a) small size, forewing length 15.6–16.7 mm; b) orbicular spot absent in some specimens and in other represented as a swelling of the antemedial line; c) apex of left valve without projection and apex of right valve with only one small knob; and d) left plate of aedoeagus short not reaching the end and without tooth.

Description. Male ( Figs. 5 and 6). Head: Front and palpus dark brown, sprinkled with white scales. Antenna dark brown, moderately bipectinate (mayor segment three times wider than central shaft). Thorax: Reddish brown sprinkled with white scales; patagium and tegula reddish brown sprinkled with white scales, both bordered by a blackish blurred line sprinkled with white scales; white spot at base of forewings; metathorax laterally orange yellow. Legs dark brown, with tufts of white hairs on tibiae. Forewing length 15.6–16.7 mm, ground color reddish grey, densely covered with white scales; costal region obscure; basal line absent; antemedial line red, extending from costa to posterior margin, waved, notched above and below discal cell, inner margin with a white strip wider than the line in all its length; orbicular spot absent in some specimens and in other as a swelling of the antemedial line; reniform spot black; postmedial line red, straight from costa to R2, convex from R2 to CuA1, notched on M1 and interpace M3-CuA1, deeply concave on posterior third, outer margin with a continuous white strip, inner margin with a wide white patch between R2 and CuA1, extending through discal cell to the antemedial line; terminal area with silvery or white tint extending from terminal line to subterminal line; subterminal line red, strongly crenulate; terminal line thin and black; fringe black with white spots at the ends of the veins. Underside semitransparent, ground color dark brown, basal shade whitish extending through the postmedial; terminal area with white spots at ends of the veins; terminal line black; fringe with the same pattern that in the superior face. Hindwing ground color white or yellowish white; with a short dark brown postmedial line, strong from costa to Sc+R5, in some specimens it reaches M3 as a very thin shadow; dark discal spot sometimes present; terminal line dark brown; fringe as ground color. Underside yellowish white at the base, fading towards the apex; terminal line dark brown extending through the costa to the postmedial line. Abdomen: Blackish brown, orange yellow at posterior end and with two concolorous spots in lateral margins of first three or four segments; ventrally without scattered of white scales. Genitalia: Uncus 1/3 as long as valve, curved, basal third without lateral lobes, ended as a terminal spine. Tegumen with posterior-lateral lobes hook-like, apex directed to the center of the genitalia. Juxta 1/3 length of valves, 4X as long as wide; distal half with one weakly sclerotized oval depression on each side, length 1/3 as long as juxta. Apical half of valves with a small rectangular carina close to costa, as long as 1/7 of valve length; apex of valve of different form: apex of left valve round, without projection and apex of right valve with only one small knob ( Fig. 20). Apical end of aedoeagus with a sclerotized horn-like dorsal projection, more or less 1/3 as long as aedoeagus, smooth, without denticles or roughness ( Figs. 29 and 34); left plate of aedoeagus short, not reaching the end, without teeth; right plate the same size as previous ( Fig. 37). Female. Unknown.

Type material. HOLOTYPE: ♂ Bolivia, Cochabamba, El Limbo, 2000 (-) ( IMLA) . PARATYPES: 1 ♂ Bolivia, Cochabamba, El Limbo, 2000 (-) ( IMLA) ; 4 ♂♂ Bolivia, Cochabamba, Incachaca (J. Steinbach) ( USNM) .

Etymology. From the Latin parva (small).

Distribution ( Fig. 47). Only known from the department of Cochabamba, Bolivia.

Discussion. This species resembles Bergiantina dolens , being differentiated by its small size and absence of orbicular spot.