Amphicnemis Selys., 1863

M. A. Lieftinck, 1940, Descriptions and records of South-East Asiatic Odonata (II), Treubia 17 (4), pp. 337-392 : 361-362

Genus Amphicnemis Selys.

The following synopsis includes notes on some previously described Malaysian species of Amphicnemis , of which I have been able to examine the types; descriptions of four new species are also given based on material collected. for me by Mr. L. Coomans de R uiter in western Borneo and Sumatra, by Mrs. M. E. Walsh in eastern Borneo, and by Mr. F. J. Kuiper in the island of Billiton.

1) F. F. Laidlaw, Sarawak Mus. Journal, 2, 1915, p. 274; Journal F.M.S. Mus. 17, 1934, p. 560-561, fig. 4 (apps. ♂). 2) F. F. Laidlaw, Journal F.M.S. Mus., 16, 1931, p. 198 - 199, fig. 6 (apps. ♂).

362 Treubia Deel 17, 1940, Afl. 4.

The table will, I hope, be of assistance in identifying the Malaysian members of the genus; these have been arranged in such a manner as to indicate the salient characters of each species, but no attempt has been made in the key to show their relationships.

The genus, hitherto unrecorded from the Malay Peninsula and Java, until recently contained 10 species found in Sumatra, Billiton and Borneo. Three other species, viz. A. furcata B rauer, glauca Brauer, and lestoides B rauer, were known to occur in the Philippine Islands. I have compared the types of them with a number of other species, also from the Philippines and as yet undescribed, in the Senckenberg Museum 1). These will not concern us here.

I have also seen two species of Amphicnemis from Celebes, so that the genus proves to be a large one, having a wide distribution in the Archipelago. Many other species in all probability await discovery.

Figures

Fig. 6. Drepanosticta barbatula, sp. n. ♂. Anal appendages, dorsal view and right side.