Syrastrenopsis inthanonensis Orhant, 2001

Saldaitis, Aidas, 2014, A review of the genus Syrastrenopsis Grünberg, 1914 (Lepidoptera, Lasiocampidae), Zootaxa 3794 (4), pp. 525-535 : 531

Syrastrenopsis inthanonensis Orhant, 2001

Figs 10–11

Syrastrenopsis inthanonensis Orhant, 2001 , Bull. Soc. ent. Mulhouse 57 (1): 6, figs 1, 2.

Type-locality: “ Thaïlande, Doi Inthanon, Chiang Mai”. Holotype: male (coll. G. Orhant) [after colour photo examined].

Wingspan 33–36 mm in males and 47 mm in female, forewing length 18–20 mm in males and 25 mm in female. Forewings rosy-brown, external field covered by greyish scales; both medial fasciae dark brown, distinct, almost parallel; slightly concave diagonal lines, flecked inside with creamy rose scales; external fasciae present as a vague grey band, also flecked inside with creamy rose scales; external edge creamy rose; cilia grey-brown; discal spot vague but clearly visible, dark brownish-grey, absent in some specimens; hindwings of the same ground colour, with two vague brownish-grey transversal bands in medial zone; wing scaling weak, making the wings appear semitransparent with strong iridescent shine; body brownish-cream colour, darker dorsally; thorax with blackish-brown dorsal line; foretibia with elongated epiphysis (as long as one third of the tibial length).

Male genitalia (fig. 22): tegumen narrow; socii small, membranous; vinculum broad, with distinct saccus; valva with curved conical upper lobe and flattened semilunar lower lobe; aedeagus short tubular with curved apical spur; vesica with two zones of point-like scobination.

Diagnosis. With its semitransparent wings, iridescent shine, pale coloration and distinctly obscure discal spot, the species cannot be confused with the other members of the genus. The relatively short epiphysis is typical, and in the male genitalia, the semilunar lower lobe of the valva is characteristic of the males.

Bionomics. Preimaginal instars and biology are unknown. All moths were collected at lights at 2050–2370 m from November to mid December. The 18.v.1999 ( Orhant, 2001: 7) collecting date on the holotype is assumed to be incorrect.

Distribution. The only records are from Prov. Chiang Mai, Thailand (Doi Inthanon, from 37.5 to 45.5 km N of Chom Thong, 10 and 18 km NW of Fang).

Material examined. 14 ♂, 1 ♀ from Chiang Mai of Thailand ( MWM).