Alona macronyx (Daday, 1898)

Sharma, B. K. & Sharma, Sumita, 2012, Notes on some rare and interesting Cladocera (Crustacea: Branchiopoda: Anomopoda: Chydoridae) from Deepor Beel, Assam, India, Journal of Threatened Taxa 4 (1), pp. 2304-2309 : 2305-2306

Alona macronyx (Daday, 1898) ( Images 5-6 )

Characters: Body oval, with maximum height before its middle. Valves with lines and dots; posterodorsal and postero-ventral corners rounded; ventral margin slightly concave. Antennules not reaching apex of rostrum. Ocellus smaller than eye and situated near to it. Labral plate with convex anterior margin and truncate apex. Postabdomen narrowing distally and with an incision at the base of the claws; with 12-14 large marginal anal denticles, distal margin of post-abdomen with a small denticle. Claw with a basal spine nearly half as long as claw.

Distribution: Meghalaya and Madhya Pradesh.

parthenogenetic female

Figures

Image 5. Alona macronyx (Daday), anterior part of parthenogenetic female

Image 6. A. macronyx (Daday), postabdomen of parthenogenetic female