Key to Leiocapitella species (modified from Green, 2002)

1. One transitional chaetiger (13 or 14) with notopodial capillaries and neuropodial hooks.............................. 2

- Two transitional chaetigers (13 and 14) with notopodial capillaries and neuropodial hooks........................... 4

2. Chaetiger 13 transitional; prostomium conical........................................... L. hartmanae Green, 2002

- Chaetiger 14 transitional; prostomium rounded.............................................................. 3

3. Presence of papillary branchiae in anterior abdomen and palmate branchiae in posterior abdomen; abdominal hooks with 3 teeth above main fang................................................................... L. dollfusi (Fauvel, 1936)

- Absence of branchiae on anterior 66 abdominal segments; abdominal hooks with 7 teeth above main fang.................................................................................................. L. fujianensis sp. nov.

4. Hooded hooks with 3 teeth above main fang (Fig. 2F)..................................... L. glabra Hartman, 1947

- Hooded hooks with 4 teeth above main fang........................................... L. atlantica Hartman, 1965