Eois auruda (Dognin, 1900)

Doan, Lydia M., Miller, James S., Brown, John W., Forister, Matthew L. & Dyer, Lee A., 2024, Two new species of the hyperdiverse geometrid moth genus Eois (Lepidoptera, Geometridae, Larentiinae) from Ecuador, with descriptions of early stages, ZooKeys 1192, pp. 111-140 : 111

Eois auruda (Dognin, 1900)

Figs 12-14

Amaurinia auruda Dognin, 1900: 443.

Eois auruda : Parsons et al. 1999: 279; Brehm et al. 2011: 1106.

Type material examined.

Holotype ♂, Ecuador, [Loja Province], environs de Loja, 1889, Dognin Collection, USNM type 32227, USNM ENT 01906872 (USMN). Paratype (1♂). Ecuador, Loja, valley of Zamora [00°35.9'S, 77°53'W, 2163 m], May 1886, USNM slide 154,179, USNM ENT 01906873 (USMN).

Additional material examined.

Ecuador: [Loja Province], Environs de Loja, 1891 (1♂), USNM slide 154,650, USNM ENT 01906874 (USNM) .

Remarks and diagnosis.

Eois auruda was described by Dognin based on two males from "Loja et vallée de Zamora, Equateur." One specimen is clearly labelled “type” and the other “co-type.” Superficially, E. auruda is paler yellowish orange than the pale green of most members of the species complex, and the maroon scallops of the termen are weakly interrupted by yellowish brown (Fig. 12 ). In the male genitalia (Fig. 14 ), the membrane surrounding the phallus has a smaller dorsal field of short spines than in related species.

Description.

Male. Head: Essentially as described for complex. Thorax: Essentially as described for complex, except forewing length 9.0-10.0 mm (n = 3). Forewing ground color pale yellowish green; postmedial line prominent throughout; antemedial line faint; discal spot, small, round, faint, reddish brown; costal region slightly tinged with pale brown; termen with dark maroon scalloped line, concolorous with discal spot; fringe two-toned, mostly pale yellow with small incursions of red and/or brown between veins M2 and M3. Forewing underside pale yellow, suffused with pale reddish brown, with faint indication of upper surface markings; antemedial line absent. Discal spot round, faint to absent, orange-brown; termen with dark orange-brown line. Hindwing ground color brownish pale yellowish green; antemedial line absent or very faint; postmedial line well defined; region between postmedial line and termen with several extremely faint, interrupted wavy, pale-yellow lines; discal spot well defined, red-brown. Fringe two-toned, mostly yellow, interrupted by pale red veins M2 and M3. Hindwing underside with pattern and coloration similar to forewing underside, but with pale pinkish tint, especially in costal region. Abdomen: Essentially as described for genus. Genitalia (Fig. 14 ) with tegumen slender, lacina broad basally, upcurved, somewhat parallel-sided in distal 0.5; valva subrectangular, slightly constricted near middle with patch of long fine setae, sacculus well defined, rounded subbasally, terminating at constriction of valva; phallus long, broad; vesica with semicircular, saw-toothed plate, lacking large cornuti; membrane surrounding phallus with very small dorsal field of short spines.

Female. Unknown.

Distribution and biology.

This species is known from three specimens from Loja Province, Ecuador, collected before the turn of the twentieth century.

Figures

Figures 12 - 14. Eois auruda 12 holotype upperside (USNM) 13 holotype underside (USNM) 14 male genitalia, USNM slide 154,179.