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Apr 19, 2012
Zapada oregonensis
Male four millimeters long. Female four to five millimeters long. Both sexes brachypterous. General color light brown. Four cervical gills, each composed of two compressed filaments which are branched once or twice beyond the base; length of each gill about six times its width at the base. Head wider than prontum, dark brown expect for a paler area beyond the anterior ocellus. Pronotum about as ...
