Scaeosopha trigonia Li et Zhang, 2012

Li, Houhun, Zhang, Zhiwei & Sinev, Sergey Yu., 2012, Review of the genus Scaeosopha Meyrick, 1914 (Lepidoptera, Cosmopterigidae, Scaeosophinae) in the world, with descriptions of sixteen new species, Zootaxa 3322, pp. 1-34 : 29-30

Scaeosopha trigonia Li et Zhang sp. nov.

( Figs. 28, 51)

Description. Adult ( Fig. 28): Wingspan 14.5 mm. Head whitish-yellow, scale tuft behind compound eye yellow, black along outer margin. Antenna whitish-yellow, flagellum annulated with brown. Labial palpus with second segment whitish-yellow, third segment whitish-yellow with black scales on ventral surface. Thorax and tegula dark-brown on basal half, grayish brown on distal half. Forewing yellowish-white, overlaid with black and pale yellowish-brown spots and patches; distinct rounded black spots at middle of cell on anterior margin, at end of cell and at 2/3 length of fold; cilia yellowish-white, mixed with yellowish-brown basally. Hindwing and cilia yellowish-brown. Legs dirty whitish-yellow, fore and mid tarsi black on outer surface. Abdomen dark-brown, each segment deep-yellow posteriorly.

Male genitalia ( Fig. 51): Brachia of uncus wide at base, contracted slightly at middle, expanded distally, rounded at apex, with a large sclerotized triangular process at basal 1/3. Valva broad and short, oval, with numerous commalike processes on ventral half; valvella club-shaped, longer than valva, sparsely setose, narrowed medially, expanded in distal 1/3. Phallus extremely long, more than eight times of valva in length, uniformly wide, coiled at middle, weakly sclerotized; cornutus absent.

Female: Unknown.

Type material. Holotype ♂, INDONESIA: Sulawesi Utara [0°37' N, 123°58' E], Dumoga-Bone N [ational]. P[ark]., “Hog’s Back” Camp Lowland forest , 492 m., ix.1985, R. Ent. Soc. Lond., Project Wallace, BM 1985-10, BMNH Microlep. slide no. 30999, Houhun Li ( BMNH, London).

Paratypes: 4 ♂, same data as for holotype, except for 2 dated x.1985 .

Distribution. Indonesia.

Diagnosis. This new species is similar to S. incantata Meyrick in the male genitalia, but can be separated from it by the brachia of uncus with a sclerotized triangular process at basal 1/3 and the tegumen slightly cancave on anterior margin. In S. incantata Meyrick , the brachia of uncus do not possess a process and the tegumen is deeply concave on anterior margin ( Fig. 42).

Etymology. The new specific epithet is derived from the Latin trigonius = triangular, in reference to the triangular process at basal 1/3 of the uncus brachium.