Key to Indian species of Atanycolus Foerster, 1863

1. Malar space 0.25× the eye length (Sikkim, India)...................................... A. hookeri (Cameron, 1907)

-. Malar space equal to or more than half the eye length......................................................... 2

2. Second metasomal tergite without parallel longitudinally impressed crenulated grooves laterally, medio-basal triangular area without a deep impression.............................................................................. 3

-. Second metasomal tergite with parallel longitudinally impressed crenulated grooves laterally, medio-basal triangular area deeply impressed (Uttarakhand, India)............................................... A. initiator (Fabricius, 1793)

3. Suture between second and third metasomal tergites completely smooth; tergites three to six light yellow; dorsal head with a large black drop-shaped spot around stemmaticum; Female antenna 33–38 segmented (China)....................................................................................................... A. lindemani Tobias, 1980 *

-. Suture between second and third metasomal tergites smooth laterally and shallowly crenulated medially; tergites three to six yellow; dorsal head without any black drop-shaped spot around stemmaticum; Female antenna 49–54 segmented........................................................................... A. tangmargensis Ahmed & Kazmi sp. nov.

* A. lindemani Tobias, 1980 not known from India but we have included it in the key because the new species closely resembles it.