Collinsa acutalis Walker1866
- Family: Thyrididae
- Subfamily: Siculodinae
- Tribe: Siculodini
- Genus: Collinsa
- Distribution: Taiwan, Sri Lanka, West Bengal, Assam, Thailand, W.Malaysia, Sabah, Sarawak, Kalimantan Timur, Sulawesi, Misool, West Irian, PNG, Solomon Islands.
- Habitat: Lowland and hill forest and disturbed areas; <1220m.
- Wing Length: 19-23mm
Taxonomy
W. Malaysia, GTE. The holotype of Pyralis acutalis Walker, [1866] 1865:1523 from Misool is in the OUMNH. Ms. comb. n. to Collinsa (Shaffer, 1992 LepIndex).
- syn. Rhodoneura hamifera Moore, [1888] 1887: 213 is from India.
- syn. of C.acutalis (Gaede, 1932: 760).
- syn. Microsca nitens Butler, 1887:116 is from the Solomon Islands (Alu [Islands]).
- syn. n. of C. acutalis Walker (Warren 1908:342).
- ms syn. Pharambara atribasalis Warren, 1899b:317 lectotype from Alu [Islands].
- ms. syn. n. and stat. n. as an ab. of Microsca nitens Butler in Shaffer, 1991 LepIndex.
Description
This species is a light reddish brown with an overall reticulate pattern in darker brown. The FW has indistinct complex fasciation and a small white c-shaped apical spot. Note the three small spots on the FW apex. The HW has a narrow antemedian fascia which is less distinct near the forward edge. In ab. atribasalis most of the FW basal area is suffused dark brown. See Collinsa sp. 2 (RTS: 134, pl. 23, fig.13 (as Pharambara sp. #428)) which is very similar.
Similar Species
See Collinsa sp. 20 (which may be a ssp. of this) and also the similar C. ancylosema.
Life History
Reported in a plantation of Theobroma cacao, (Sterculiaceae) (cocoa) in Sabah (Tawau), (Conway, 1971) but the sp. involved is not C. acutalis. It is probably Collinsa sp. 2.