(Plate 2, figure 8; female genit. plate 22, figure 2)

Material examined.

Holotype: female, Philippines, Palawan, Mantalingajan, Pinigisan, 600 m, 13.ix.1961, leg. Noona Dan Exp. 61-62, caught in Malaise-trap inside forest, genit. prep. 3489 M. Fibiger. Coll. ZMUC.

Diagnosis.

Wingspan: 15 mm.

Transverse lines: black, suffused with brown; basal, antemedial, postmedial, and subterminal lines well marked, with black spot by costa: terminal line marked by black elongated dots.

Reniform: elongated, black.

Hindwing: brown.

Underside: unicolorous brown.

Abdomen: brown.

Female genitalia.

Ovipositor: quadrangular.

Anterior apophyses: length equal to that of posterior apophyses.

8 th abdominal segment: very narrow, ventrally fused with 7 th segment.

7 th abdominal segment: heavily sclerotised; position of ostium in middle of segment; two large, hollow, triangular flaps anteroventrally.

6 th segment: posterior part of segment heavily sclerotised and fused to 7 th segment; anterior part of 6 th segment less heavily sclerotised – similar to rest of abdomen.

Antrum: relatively long and large, tapered, coiling, heavily sclerotised, 6 X longer that wide.

Ductus bursae: membranous, 3 X as long as corpus bursae.

Corpus bursae: globular.

Differential diagnosis.

The female genitalia of T. montana are unique in the shape of the antrum.