Lacosoma ostrinum Herbin, 2016

St Laurent, Ryan A. & Cock, Matthew J. W., 2017, Annotated list of Mimallonidae (Lepidoptera, Mimallonoidea) from Trinidad and Tobago, with the description of a new species of Cicinnus Blanchard, 1852 and taxonomic notes, Zootaxa 4268 (1), pp. 53-70 : 65

Lacosoma ostrinum Herbin, 2016

( Figs. 21, 22 )

Type locality. French Guiana

Like Druentica , Lacosoma consists of many similar taxa, and is in dire need of an adequate revision. However, the genitalia dissection of the single male Lacosoma (other than L. valva ) in Trinidad is a very close match to the genitalia of the holotype of L. ostrinum ( Herbin 2016, figs. 90–92). Externally, these specimens are quite close as well, although the forewings are slightly more falcate in the holotype of L. ostrinum . If our determination is correct, this is the first report of L. ostrinum outside of French Guiana.

Although we have only examined a single pair of specimens from Trinidad, we have no reason to believe that they are not conspecific considering the scarcity of Lacosoma collected in Trinidad. Therefore, we figure here the female of L. ostrinum for the first time. Both Trinidad specimens were captured in lowland forest, the male in the south and the female between the Northern and Central Ranges.

Material examined. (1 ♂, 1 ♀ total) TRINIDAD : 1 ♂, Off Saunders Road , Inniss Field, c. 50 m, at beginning of track to dam: 17.V.1999, M.J.W. Cock [leg.], MV light, dusk to 22.10h ( MJWC) . 1 ♀, 2.5 mi. SE of Valencia , Valencia Forest: IV.1980, M.J.W. Cock [leg.], MV light ( MJWC) .

Figures

FIGURES 17 – 29. Mimallonidae of Trinidad. 17. Druentica coralie male, Trinidad, Arima Valley, 800 – 1200 ft (AMNH). 18. D. coralie female, Trinidad, ex. Clidemia hirta, photo courtesy of M. Ramadan (HDOA). 19. D. patawa male, Trinidad, Hollis Reservoir (MJWC). 20. D. patawa female paratype, French Guiana, Kaw Rd., 286 m (CDH). 21. Lacosoma ostrinum male, Trinidad, Off Saunders Road, Inniss Field, 50 m (MJWC). 22. L. ostrinum female, Trinidad, 2.5 mi SE of Valencia, Valencia Forest (MJWC). 23. Trogoptera guianaca male, Trinidad, Morne Bleu, Textel Installation (MJWC). 24. T. belilia female, Trinidad, Off Saunders Road, Inniss Field, 50 m (MJWC). 25. L. valva male, French Guiana, Réserve des Nouragues, Inselberg DZ, photo courtesy of P. Collet (CPC). 26. L. valva female, Trinidad, 2.5 mi SE of Valencia, Valencia Forest (MJWC). 27. Mimallo amilia male, Trinidad, Curepe (MJWC). 28. M. amilia female, Trinidad, Arima Valley (MJWC). 29. Zaphanta infantilis male, Trinidad, 2.5 mi SE of Valencia, Valencia Forest (MJWC). Scale bar = 1 cm.