| OCR Text |
Show 296 SUPERFAMILY CAENOIDEA Family CAENIDAE Subfamily Caeinae This two family following tinguish this family Idaho: (2) wing present; (Fig. 213), of (1) Adults. from all Three the and Stephens. of characters families IMP long as in occurring vein as MPI (1) Nymphs. segment two quadrate, with dis (3) genital forceps and (Figs. 216-217). succeeding segments to serve developed caudal filaments wings absent; abdominal on represented in Idaho by and other well MP2 the male one-segmented Operculate gills on Curtis combinations veins hind and is subfamily Brachycercus genera: The and and gills margins fringed (Figs. the 212, 214-215). Genus The tinguish Idaho: (2) following combinations this (1) the three segment Nymphs. Caenis, Prosternum twice (1) The paired ocellar tubercles on as the times head with (Fig. 212); maxillary palpi two-segmented. 1834 characters of genus widely separated antennal segment. from genus Adults. forecoxae second Brachycercus Curtis also broad venter; the a length serve to occurring as in long; and (3) the of the basal prominent frontal and dis (2) labial and and |
