Agrotis steniptera ( Dognin, 1916 )

Blas, Germán San, 2014, Agrotis Ochsenheimer (Lepidoptera, Noctuidae): a systematic analysis of South American species, Zootaxa 3771 (1), pp. 1-64 : 18

Agrotis steniptera ( Dognin, 1916)

( Figs 7 , 46 , 64 , 94 )

Euxoa steniptera Dognin, 1916: 9 ; Draudt, 1924: 49. Holotype: ♂ Peru, Cuzco, 3500m, (Fassl) (USNM, Cat. No. 32249, Genitalia slide No. 3976). Examined.

Agrotis steniptera (Dognin) : Poole, 1989: 56 (new combination)

Diagnosis. Agrotis steniptera differs from other South American species of Agrotis by the following combination of characters: 1) forewing basal dash black, extending from wing base to base of claviform spot; 2) basal, antemedial, and postmedial lines undifferentiated; 3) subterminal line light brown and black edged basally, concave between veins as small arrows, extended basally as a streak between M1–M2 veins; 4) in male genitalia clavus barely differentiated as an area of piliform setae; 5) vesica 2 × as long as aedeagus; and 6) basal spined band present.

Redescription. Male ( Fig. 7 ). Head. Frons central projection small, with raised edge of rough surface, not projected anteriorly into a point. Antenna bipectinate, widest at 1/4 its length, gradually tapering to apex, widest segment 4 × as wide as central shaft, anterior process 1.5 × as wide as posterior process. Thorax. Patagium slightly darker than thorax, with black medial line; tegulum lighter than thorax, with black basal line. Forewing length 10.6–11.4 mm; ground color grayish brown; subcostal band undifferentiated; basal dash black, extending from wing base to base of claviform spot; basal line undifferentiated; antemedial line undifferentiated; claviform spot wide, brown, and black edged; orbicular spot strongly oval, extending toward the reniform spot, never contiguous with the latter, concolorous with ground color, black edged with grayish center; reniform spot concolorous with orbicular spot, distal margin with two streaks extending between M1–M2–M3 veins to subterminal line; discal cell concolorous with ground color, with a black streak of variable width joining both spots; medial line undifferentiated; postmedial line undifferentiated; subterminal line light brown and black edged basally, concave between veins as small arrows, extended basally as a streak between M1–M2 veins, in some specimens joined with reniform streak like one continuous line; terminal line a series of darkish lunulae between veins; fringe slightly lighter than forewing ground color. Hind wing diffuse brown; fringe iridescent. Abdomen. Concolorous with forewing ground color. Genitalia ( Fig. 46 ). Clavus barely differentiated as an area of piliform setae. Ampulla 1/4 × as long as valve, basal 2/3 expanded, then narrowed to half its widest diameter; saccus subtriangular. Vesica ( Fig. 64 ) 2 × as long as aedoeagus, consisting of 1 1/2 wide loop, right basal diverticulum absent, basal spined band present. Female. Unknown.

Distribution. Restricted to Southern Peru ( Fig. 94 ).

Material examined. (1 ♂). PERU: Puno. 10km N Lampa, Quebrada Metara, 3900m, ♂ 31-III-3-IV-1987 ( O. Karsholt) ( ZMUC).

Figures

FIGURES 7 – 15. Adults of Agrotis species, edmondsi - group. 7, A. steniptera, ♂. 8, A. propriens, ♂. 9, A. bistrigata, ♂. 10, A. bistrigata, ♀. 11, A. dispar, ♂. 12, A. dispar, ♀. 13, A. peruviana, ♂. 14, A. elegans, ♂. 15, A. elegans, ♀. Actual size.

FIGURES 46 – 55. Male genitalia of Agrotis species, edmondsi - group. 46, A. steniptera. 47, A. propriens. 48, A. bistrigata. 49, A. dispar. 50, A. peruviana. 51, A. elegans. 52, A. benitezi. 53, A. leonoides. 54, A. edmondsi. 55, A. leucovenata.

FIGURES 64 – 73. Male genitalia aedeagus of Agrotis species, edmondsi - group. 64, A. steniptera. 65, A. propriens. 66, A. bistrigata. 67, A. dispar. 68, A. peruviana. 69, A. elegans. 70, A. benitezi. 71, A. leonoides. 72, A. edmondsi. 73, A. leucovenata.

FIGURES 94 – 99. Distribution maps of Agrotis species, edmondsi - group. 94, A. steniptera. 95, A. propriens. 96, A. bistrigata. 97, A. dispar. 98, A. peruviana. 99, A. elegans.