Suana sundana Heylaerts sp. n.

Suana concolor Walker sensu Holloway, 1976: 89

Image of [object Object] Heylaerts ♂ (Sumatra) — ♂ (Sumatra)

Diagnosis

♂♂ 28-35mm.

The species is larger than concolor, a lighter, brighter rufous brown.

The subbasal pale patch of the forewing is prominent, yellowish; the white discal spot, when present, is narrow rather than rounded; the fasciae are less wavy than in concolor, and the grey zone between the second and third is usually broad and conspicuous.

The genitalia show no significant differences.

Females are not known.

Holotype ♂

P. Pandjang, Pad. Bovenland, SUMATRA (I.Z. Kannegeiter), BM lasiocampid slide 1002.

Paratypes

2 ♂♂ Batang Proepoe, Padang Bovenlanden, 1500 ft
1 ♂ Ft. de Kock, W. SUMATRA.

Taxonomic Note

In 1987, Suana sundna Holloway was described as new, as Bornean males could readily be divided into two distinct facies types. Holloway & Bender (1990: 151) placed sundana as a synonym of riemsdyki Heylaerts (see also Part 6, p. 99). They also described S. zahmi Holloway & Bender from Nias, a taxon with the riemsdyki facies type but very much darker. Zolotuhin et al. (1998: 187) treated all Philippines material as concolor Walker. This material is very variable in the male: the discal spot when present is round, not lunulate; the hindwing margin is round as in riemsdyki, not angular as in Sundanian and Thai (Zolotuhin & Pinratana, 2005: Plate 13) concolor. Zolotuhin & Pinratana suggested (p. 93) that all this variation could be attributed to concolor, with the possibility that some of these taxa could be local races or subspecies. The situation will probably require molecular analysis to resolve it, but riemsdyki is retained as a good species here for the time being. The situation was also noted by Zolotuhin & Holloway (2006) when describing a new species from Sulawesi and by Zolotuhin & Witt (2005) in relation to the fauna of Flores.