Descriptions and records of South-East Asiatic Odonata (II) Author M. A. Lieftinck text Treubia 1940 1940-01-01 17 4 337 392 journal article 10.5281/zenodo.3571116 a02f182b-32e4-4649-afe0-983cb21ceb9e 3571116 Amphicnemis ecornuta Selys ( fig 15 , pl 15 fig 3 ) - 1889. SELYS , Ann. Mus. civ. Genova, 7 (27), p. 482 - 483. -- C- Sumatra ( Fort de Kock). 1898. Kruger, Stett. ent. Zeitg. 59, p. 123 - 125. - ♂♀ N-E. Sumatra 1913. LAIDLAW , P. Z. S. London, p. 74 (key). 1937. LIEFTINCK , Treubia, 16, p. 101 (note). Material studied: -— 1 ♂ (semiad), holotype , labelled: Fort de Kock. Sumatra , Wyers ” (yellow, Selys's hand) under drawer-label: " Amphicnenıis ecornuta Selys n sp _” (id) ; 1 ♀ (ad); “ Dohrn, Sumatra , Soekaranda " (printed), Amphicnemis ecornuta Selys Sumatra Kruger " (Selys's hand). Both specimens in the Brussels Museum. 1 ♂ , 1 ♀ (ad), “ Dohrn, Sumatra , Soekaranda ” (♀ allotype), in the Stettin Museum. —- 1 ♂ (ad.), S. Sumatra , Lampong residency, Tandjong Karang, Kedaton Estate, Wai Rilau , 150 m alt., March 26, 1937 , J. VAN DER Vecht leg., in the Buitenzorg Museum. 368 TREUBIA DEEL 17, 1940, AFL. 4 . . For a detailed description of this magnificent species the reader is referred to Kruger's account. The ♂ from South Sumatra resembles closely the two other examples, from Fort de Kock and Deli (including the type), with which I have compared it. The type, though fully matured, has obviously been preserved in alcohol and this may largely account for its exceptionally small size; the anal appendages are shrivelled and the colour of the legs has faded to an uniform pale yellow. The only difference which I can make out is that the dorsal anastomosis of the metallic-green juxta-humeral (mesepimeral) fascia (fig. 15) is obliterated in the type. This slight difference I regard as of no importance. The anal appendages of the ♂ differ but slightly from those of amabilis , sp. n. ( cf . pl. 15 fig. 2 & 3 ). Fig.15. Colour-pattern of synthorax of Am- phicnemis ecornuta Selys, ♂ (Lampong res., left), and of A.amabilis , sp.n. ♂ (E.Borneo, right). Measurements of Lampong ♂: abd. + app. 45, hw. 26.5 mm.