Revision of the elegans-group of Alona s. lato and its status as a subgenus of Coronatella Dybowski & Grochowski, 1894 (Cladocera: Anomopoda Chydoridae)
Author
Sinev, Artem Y.
text
Zootaxa
2020
2020-02-14
4732
4
501
526
journal article
24037
10.11646/zootaxa.4732.4.1
66a0b50e-47ae-443f-a2ef-84409dc5acd9
1175-5326
3667290
33361FFC-9C1C-4046-9F59-456BB9A081CE
Subgenus
Coronatella
Dybowski & Grochowski, 1894
Diagnosis.
Small to medium-size
Coronatella
, maximum length of adult female from
0.25 to 0.6 mm
. Sculpture of valves as sparsely spaced lines or tubercles. Posteroventral angle of valves with uniform setulae, or with groups of differentiated setulae, or with 1-4 denticles. Seta arising from basal segment of antennal endopodite thin, shorter than endopodite itself, or absent. Accessory seta of limb I very short, about 1/3 length of ODL seta. Setae 2-3 of IDL armed with thick spinules; distal spinules frequently transformed into spines thicker than other elements. Exopodite of limb II with well-developed seta, except in
C. (C.) undata
.
Type
species
Alona rectangula
Sars, 1861