A Synopsis of the Odonata (Dragonflies) of Sumatra Author Lieftinck, M. A. text Miscellanea Zoologica Sumatrana 1935 1 1 23 journal article 10.5281/zenodo.3251875 0e6ccf7f-8e43-40c1-99a4-616658ec790b 3251875 154b. Microgomphus chelifer ? thelyphonus Lieftinck . - S. Lampoeng Res.: Mt. Tanggamoes . Oeloebeloe . 500 m . & Talangpadang . 150 m . 2 ♂ . June 1-2. 1929 .. Drescher leg .; Gisting . 500 m . Waiteboe . 450 m . Dec, 23. 1934 . 1 ♀ arrested in trans formation. Author leg . - One of the two males is nearly identical with the type of ch. thelyphonus. from S. W. Java; the second specimen is smaller and rather intermediate between chelifer and thelyphonus. More material is needed to settle the question as to whether the two races should be united.