Oxyurella singalensis ( Daday, 1898 )

Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J. & Papa, Rey Donne S., 2014, Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters, Raffles Bulletin of Zoology 62, pp. 771-794 : 780

Oxyurella singalensis ( Daday, 1898)

Specimen examined. Two parthenogenic female (UST ZRC- 0132-Lake Sampaloc, Laguna; 0133-Lake Calig, Laguna)

Description. It is common in stationary water bodies and not widely observed in lotic ecosystems. Its body is ovaloblong in shape. The carapace of the species does not have a keel. Its antennule reaches the tip of its rostrum. It has short swimming antennae with two strong well developed spines. The ventral margin of its carapace has long feathered setae. Relatively narrow, the post abdomen of O. singalensis has a long basal spine with 3 accessory spines on its base. It was found exclusively in Luzon in both littoral and limnetic samples ( Figs. 16 , 17 )

Distribution. Cagayan: A dam in the town of Binag, Lake Nalbuan; Pampanga: Candaba swamp; Laguna: Lake Sampaloc, Lake Kalibato ( Fig. 7 )

Remarks. Common in tropical and subtropical Asia, Africa and Australia. Found in sandy and muddy sediments of littoral zones of lakes and reservoirs.

Figures

Fig. 16. Oxyurella singalensis parthenogenic female. A, Habitus; B, Antennae; C, Post abdomen.

Fig. 17. Scanning electron micrographs of Oxyurella singalensis. A, habitus; B, post abdomen; C, Dorsal margin; D, rostrum and antennule.

Fig.7. Distribution of family Chydoridae based on recently collected samples (2013) and stored samples in the UST ZRC.