Birdantis collaris (Walker, 1870) stat. rev.

Figs 3–4

Polydictya collaris Walker, 1870: 98 (described).

Polydictya collaris – Gerstaecker 1895: 27 (doubt on generic placement in Polydictya).

Birdantis collaris – Breddin 1900: 193 (transferred to Birdantis; recorded from Halmahera Island: Soah Konorah). — Distant 1906: 26 (listed; = vittiventris Walker in litt. (error!)). — Metcalf 1947: 91 (catalogued).

non Birdantis delibuta f. collaris – Lallemand 1959: 196 (keyed; treated as a local form of B. delibuta (error!)); 1963: 12 (same as preceding reference).

non Birdantis delibuta collaris – Fennah 1977: 376 (keyed), 377 (recorded from Ambon Island (error!); treated as a subspecies of B. delibuta (error!); male genitalia illustrated (error!)). — Nagai & Porion 1996: 14 (listed; = vittiventris Walker in litt. (error!)).

Note

The specimens examined by Lallemand (1959, 1963) and Fennah (1977), erroneously identified as B. collaris, were actually specimens of B. trilineata (Schmidt, 1926) .

Diagnosis

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

(1) frons entirely yellow-brown, without lines or spots (Fig. 4E)

(2) bulge between frons and vertex black (Fig. 4C)

(3) abdomen mostly black dorsally (Fig. 4A) and brown ventrally (Fig. 4B)

(4) tegmina opaque on basal half and infuscate on distal half (Fig. 4A)

(5) hind wings largely hyaline, with basal angle yellowish (Fig. 4A)

Material examined

Holotype INDONESIA: ♀ (Fig. 4), Morotai Island, 2°20′52″ N, 128°27′52″ E [Morty, Wallace / glued on the reverse: 67 66] [M] [Type] [ collaris] [BMNH(E), # 651887] (BMNH).

Distribution

Morotai Island (holotype) and Halmahera Island (Breddin 1900) (Fig. 3).