Coronatella

Key for Coronatella s. lato species of South-East Asia

1. Posteroventral angle of valves with denticles................................... Coronatella acuticostata (Sars, 1903)

1'. Posteroventral angle of valves without denticles.............................................................2

2. Whole valves covered by well-defined longitudinal lines. Antenna without seta on basal segment of exopodite....................................................................... Coronatella trachistriata (Chen, Zhang & Liu, 1994)

2'. Antenna with seta on basal segment of exopodite. Valves with weakly developed longitudinal lines in postero-ventral portion only or without them...................................................................................3

3. IDL setae thick, curved, with thick basalmost spinules. Basal spine of postabdominal claw of moderate length. Potabdomen with distalmost setulae in postanal group of lateral setulae of moderate length and thickness................................................................................................... Coronatella rectangula (Sars, 1862)

3' IDL setae thin, straight, armed with thin setulae. Basal spine of postabdominal claw very short. Postabdomen with very long and thick distalmost setulae in postanal group of lateral setulae..................................... Coronatella sp.