Birdantis trilineata (Schmidt, 1926) stat. rev.

Figs 3, 7–9

Myrilla trilineata Schmidt, 1926: 228 (described).

Myrilla trilineata – Metcalf 1947: 84 (catalogued).

Birdantis delibuta – Lallemand 1963: 11 (treated as a junior synonym of B. delibuta (error!)). — Fennah 1977: fig. 7 (anal tube (of a specimen of B. trilineata erroneously attributed to B. delibuta !)). — Nagai & Porion 1996: 14 (treated as a junior synonym of B. delibuta (error!)), pl. 3, fig. 56 (habitus (specimen of B. trilineata from Ambon Island erroneously attributed to B. delibuta !)).

Diagnosis

This species can be separated from all other species of Birdantis by the following combination of characters:

(1) frons yellow-brown, with three black-brown lines limited dorsally to level of middle of eyes, and with the two lateral ones extending on clypeus (Figs 7D, 8D)

(2) bulge between frons and vertex dark brown and vertex yellow-brown (Figs 7B, 8B)

(3) tegmina opaque on basal half and infuscate on distal half (Figs 7A, 8A)

(4) hind wings largely smoky, with a basal reddish brown marking (Figs 7A, 8A)

(5) abdomen mostly dark red dorsally (Figs 7A, 8A) and yellow-brown ventrally (Figs 7C, 8C)

(6) anterior margin of frons in dorsal view rounded and strongly protruding (Figs 7B, 8B)

Material examined

Lectotype INDONESIA: ♀ (designated to improve nomenclatural stability in the group, Fig. 7), Buru Island, 3°23′55″ S, 126°38′54″ E [Buru 1921, Station: 1 leg. L.J. Toxopeus] [E. Schmidt] [Typus] [ Myrilla trilineata Schmidt ♀, Edm. Schmidt determ. 1926.] [* trilineata Schmidt 1926] [Mus. Zool. Polonicum Warszawa Typus n. 1211 Myrilla trilineata Schmidt, 1926 Syntypus] [Mus. Zool. Polonicum Warszawa 12/45] (ZMPA).

Paralectotype INDONESIA: ♀, Buru Island, same collection data as for lectotype (ZMPA).

Other material

INDONESIA: 1 ♀, Boano Island, 2°59′ S, 127°55′ E, Aug. 2013 [I.G.: 32.613] (RBINS); 1 ♂, W Seram Island, Waipia, 2°58′30″ S, 129°09′40″ E, 600–800 m a.s.l., Jun. 2013 [I.G.: 32.613] (RBINS); 1 spec. (abdomen lost; “ vittiventris ” Walker, in litt.), Ambon Island, 3°38′ S, 128°07′ E, Wallace leg. (BMNH) .

Supplementary description

Male genitalia

Pygofer higher than long, about 2.0 times as high as maximum length, longer ventrally and abruptly narrowing on dorsal ½ in lateral view; dorsal margin of pygofer horizontal in lateral view (Fig. 9A). Anal tube elongate, about 1.5 times as long as maximum breadth, nearly straight with ventral margin sligtly curved in lateral view; progressively broadening from base towards ¾ of length in dorsal view, then with lateral margins converging; apical margin strongly, roundly emarginate in dorsal view, acutely rounded in lateral view (Fig. 9A–B). Gonostyli slightly elongate in lateral view, with ventral margin slightly concave and posterior margin broadly rounded; anterodorsal margin slightly emarginate after lateral process; lateral process laminate, curved laterally and apically pointed, with apical point directed lateroventrally (Fig. 9A–B). Aedeagus mostly membranous (Fig. 9C–F).

Distribution

Buru, Seram, Ambon and Boano Islands (Fig. 3).