Oithona rigida

Giesbrecht, 1896

Females: Anterodorsal region of Ce without pair of ocular lenses; CR 3.0-3.3 times longer than wide; Mx1 Enp with 2 setae. More character s can be accessed by backtracking the key:
Page 1250

Males: Md B with 2 spinulose spines on distal end. More characters can be accessed by backtracking the key:
Page 1263

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