Macrocyclops albidus albidus Jurine, 1820

Macrocyclops albidus albidus Jurine, 1820 View in CoL )

Figs 17 View Figure 17 , 18 View Figure 18

Diagnosis. Adult female, 1,280 µm in length excluding caudal setae. Caudal ramus without ornamentation on the inner margin, 2.0 times longer than broad ( Figs 17A View Figure 17 , 18A View Figure 18 ).

A

Hyaline membrane of the last segment of the antennule smooth (not serrulate). P4-intercoxal sclerite with three rows of spinules. Inner and outer P4 terminal spines of the same length ( Figs 15B View Figure 15 , 18C View Figure 18 ). First segment of P5 with row of small spinules on the surface being an outer proximal row, an inner curved medial row and an inner distal row ( Figs 17C View Figure 17 , 18B View Figure 18 ).

Remarks. Cosmopolitan species, usually found in low numbers in samples from rivers, littoral zones, aquatic macrophytes and various environments such as caves, dolomitic lakes, puddles, and others. In these environments, peaks of high abundance can occur. It is seldom found in reservoirs zooplankton.