Caconeura collaris dohrni ( Kruger )

Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, Miscellanea Zoologica Sumatrana 1, pp. 1-23 : 8

43. Caconeura collaris dohrni ( Kruger)

(= dohrni Krug. et auct.)-

Eastcoast Gvt.: Deli. Soe karanda ( Kruger). Westcoast Res.: Mt. Ophir distr.; Padangsche Bovenlanden ( Ris). S. Lampoeng distr.: 1 ♂. 1 ♀, Talangpadang. 150 m. June 1. 1929. Drescher leg. ; 9 ♂, 2 ♀, Mt. Tanggamoes. Gisting. 600 m. Waiteboe & Waiberah . Dec. 24-30. 1934. Author leg . A very careful comparison of the Lampoeng specimens with a large sedes of typical collaris, collected in W. Borneo. has convinced me that dohrni is not specifically distinct from that species. In most of the Bornean specimens. and in those from the Malay Peninsula, a rudiment of the anal bridge-vein is present, whereas in dohrni this vein is invariably absent. In the ♀ there is a slight difference in the sha pe of the posterior prothoracic horns, which, in typical collaris from Borneo, are a little shorter. Other differences are 'not to be found; the apps. of the ♂ are identical in the two races.