Paectes sinuosa Pogue

Pogue, Michael G., 2013, A review of the Paectes arcigera species complex (Guenee) (Lepidoptera, Euteliidae), ZooKeys 264, pp. 125-163 : 145-149

Paectes sinuosa Pogue sp. n. Figs 22-25354252

Type material.

Holotype male - ARGENTINA: BUENOS AIRES: Los Vasquez, Dognin Collection, genitalia slide male, USNM 135916 [green label]; HOLOTYPE / Paectes sinuosa Pogue" [red label]. USNM. Paratypes - (22 males, 19 females) ARGENTINA: COLON: Sierras de Cordoba, La Granja, (1 female), A. Garcia [BMNH]. LA RIOJA: La Rioja, (1 male), genitalia slide MGP 1353, Jan.-Feb. (1 female), [no date] (1 male) F. Giacomelli [BMNH]. SALTA: Salta, Feb. 1905 (1 male), genitalia slide MGP 1312, J. Steinbach [BMNH]. SANTIAGO DEL ESTERO: Santiago del Estero, (1 female), J. Steinbach [BMNH]. TUCUMAN: Tucuman, (2 males, 1 female), genitalia slides male, MGP 1311, MGP 1350, Schreiter, 450 m, Mar. 1902 (1 female), genitalia slide MGP 1353 [BMNH]. BOLIVIA: SANTA CRUZ: Ichilo, Buenavista, 750 m, Aug.-Apr. 1906-1907 (1 female), Steinbach [BMNH]; Sara, 450 m, Jan. (1 female), genitalia slide MGP 1349, Nov. (1 male, 1 female), J. Steinbach [BMNH]. BRAZIL: AMAZONAS: Humaitá, July-Sep. 1906 (1 female), W. Hoffmanns [BMNH]. BAHIA: S. Antonio de Barra, (10 males, 1 female), [BMNH]. GOIAS: Chapada dos Veadeiros, 18-24 km N of Alto Paraiso, 1400-1500 m, 2-5 Oct. 1985 (1 male), S.E. Miller, genitalia slide USNM 135970, USNM. MINAS GERAIS: Tijuco, Dec. (1 male) [BMNH]. PARANÁ: Curitiba, 23 Apr. 1988 (1 male), L. Crestana, Genitalia slide Vial #79, MGCL; Entre Rios, (1 female) [BMNH]. PERNAMBUCCO: Serra de Communaty, Dec. 1893 (1 female), E. Gounene [BMNH]. RIO DE JANIERO: Petropolis, 1888 (1 female), Germain [BMNH]. SÃO PAULO: Alambari, 3 Sep. 1988 (1 female), 8 Dec. 1988 (1 male), 16 Dec. 1988 (1 male), L. Crestana, Genitalia slide f Vial #86, genitalia slides male MGP 1279, MGP 1288, MGCL; Porto Feliz, 1 June 1988 (1 female), L. Crestana, genitalia slide MGP 1289, MGCL. PARAGUAY: BOQUERON [NUEVA ASUNCION]: Nueva Asuncion, 313 m, 23-25 Mar. 1986 (1 female), M. Pogue and M. Solis, genitalia slide USNM 136014. GUAIRA: Villarrica, Dec. 1922 (1 female), J. Schade [BMNH]. PARAGUARI: Sapucaí, 24 June 1902 (1 male, 1 female), genitalia slide male MGP 1310, W. Foster [BMNH]. PRESIDENTE HAYES: Primavera, 14 Apr. 1960 (1 female), E.J. Phillips [BMNH].

Etymology.

The species name is derived from the Latin sinuo (bend), referring to the sinuate free saccular extension of the male genitalia.

Diagnosis.

The forewing is longer in Paectes sinuosa than in Paectes medialba . The postmedial line is double in Paectes sinuosa (Figs 22-25) and single in Paectes medialba (Figs 20-21). In the male genitalia the dorsal margin of the costa is slightly concave in Paectes sinuosa (Fig. 35) but greatly convex in Paectes medialba (Fig. 34). The free saccular extension is sinuate in Paectes sinuosa (Fig. 35) but straight in Paectes medialba (Fig. 34). At the base of the vesica there are two wide cornuti in Paectes sinuosa (Fig. 35) but only one in Paectes medialba (Fig. 34).

Description.

Adult. Male.Head - antenna broadly bipectinate to just beyond half length then filiform; eyes large, globular; vertex with broad scales, dark brown anteriorly, light brown posteriorly; frons with broad scales projecting slightly beyond anterior eye margin, mostly light brown with a posterior band of dark brown scales; labial palp porrect with mixture of light-brown and brown scales tipped with white, internal surface white. Thorax - prothorax light brown, anterior margin with thin black line; few scales forming a faint medial line; posterior margin with some dark-brown scales; patagium with dark-brown scales tipped with white, mixed with a few white scales, scales broad mixed with hairlike scales; protibia dark-brown scales tipped with white, mixed with white scales, apical band white, obscure, tarsi dark brown with distinct white apical bands; midtibia concolorous with protibia, but with more white scales giving a slightly lighter overall color, white apical band more distinct than in protibia, tarsi dark brown with white apical bands; hind tibia mostly white with a few dark-brown scales, tarsi white; underside with white hairlike scales; forewing length 10.5 mm; costal area dark gray with a few white scales forming short dashes along costa, especially from postmedial band to just below apex; distinct ovate cream-colored basal spot; thin black antemedial line from posterior margin forming ventral border to basal spot; medial area of wing white and light brown; medial line obscure, dark brown, from posterior margin to anal vein where it becomes arrowshaped then continues vertically to Cu vein; reniform spot obscure, a pair of tiny dots, ventral dot just above M vein in discal cell dark brown and larger than dorsal dot, which consists of only a few ferruginous scales; postmedial line black, double from posterior margin to vein M1; black dash between veins R5 and M1 extending to outer margin; white apical spot; subterminal area a mixture of light- brown, gray, white, and ferruginous scales, lighter than costa and darker than medial area; terminal line a series of gray, recurved lines between veins; fringe brown, gray patches opposite vein apices; hind wing white, marginal shading dark gray, veins highlighted dark gray, anal fold with a white and dark gray striped pattern. Abdomen - dorsum mixture of pale gray, black, and ferruginous, with small patches of black scales at caudal apex of segments 2-3; ventrum white with a faint black medial line and partial lateral lines; male eighth segment membranous with a pair of short, sternal, sclerotized bars and a pair of longer, wider, dorsal sclerotized bars; a pair of lateral, coremata bearing numerous, fine, elongate setae. Genitalia (Fig. 35) - Uncus triangulate, apex recurved and pointed, approximately same length as subscaphium; subscaphium triangulate, decurved, apex pointed; valve membranous, rectangulate, slightly produced distally, apex round, covered with wide, elongate setae; costa short, recurved, apex produced, round, sparsely covered with elongate, hairlike setae; sacculus well developed, proximal 2/3 fused with valve, distal 1/3 free, sinuate, spiculate, longer than valve, apex round; saccus with broad arms; aedeagus straight; vesica emerges at a right angle ventrally from aedeagus; bulbous with a short, distal diverticulum and two elongate leaflike cornuti at base, longest laterally, shortest ventrally; rectangular, grooved sclerotized plate lateral to distal diverticulum, short slightly curved cornutus on grooved plate. Female. As in male except:antenna filiform; forewing length 9.5 mm; antemedial line from costa to R vein dark gray, angulate toward apex then angulate toward base with a pointed apex, black from R vein to anal vein, curved with a straight line extending to posterior margin; medial area less contrasted than male with white-tipped gray scales; postmedial line black, well developed from posterior margin to CuA2 vein then faint to M2 becoming more developed from M2 to R5; thin black line along R5 to outer margin; apical spot white. Genitalia (Fig. 42) - Papillae anales ovate, soft, fleshy, covered with numerous setae; venter of eighth segment covered with minute spicules; anterior apophyses fused with eighth sternite; posterior apophyses present, ventrolateral corners produced into triangular projections; ostium bursae a small dimple or absent; base of ductus bursae rectangular fused to eighth sternite, ductus bursae elongate, striate, approximately same width throughout, small ventrally produced pocket just below fused base; appendix bursae emerges dorsally from approximately middle of ductus bursae, ovate; corpus bursae ovate, covered internally with numerous thornlike signa.

Distribution and biology.

Known from the states of Goias and São Paulo, Brazil, the Chaco of northwestern Paraguay, and in the state of Tucuman, Argentina (Fig. 52).

Specimens from the São Paulo, Alambari, Brazil, were reared from Brazilian Peppertree ( Schinus terebinthifolius ). A specimen from Porto Feliz, São Paulo, Brazil, was reared from Lithraea molleoides (Vell.) Engl., Anacardiaceae.

Remarks.

Paectes sinuosa is described to differentiate the several species previously identified as Paectes obrotunda in the USNM collection.

Paectes sinuosa has two forms similar to those in Paectes nana . One form has bold markings of the antemedial and postmedial lines; the other form has faint antemedial and postmedial lines and an overall gray forewing. The male genitalia are identical in these two forms.