| OCR Text |
Show 189 114); dark streaks of color present on 2 femora 2(1) Penes with prominent lateral spine on ventral surface near base (Figs. 110-112); forewings usually 11 mm. or more in length ••.••.••••••..••..•••.••.....•••.•..•.•••• 3 Penes without lateral spine on ventral surface near base (Fig. 114); forewings usually 9 3( 2) mm, or less in Small ventral spine length undula ta R. .••••.•• spines present penis lobe, dorsal spines rarely present at same place (Figs. near center of or each 111-112) 4 Ventral spines absent, small dorsal spine spines present near center of each penis lobe (Fig. 110) B. or ••••••••••..•••••• 4(3) Distinct row of small spines present at apex of each penis lobe; penes strongly divergent apically (Fig. at 112) •.•.••.. . morrisoni of each penis lobe minute apex Spines or absent; penes only slightly divergent apically (Fig. Ill) Mature 1 futilis . hageni Nymphsl Gills on abdominal segments 2-6 without small lobe projecting from dorsal margin; each gill lamella with sclerotized setose line approximately through middle on ventral surface (Fig. 83) .•..•.....•... . robusta lThe nymphs of R. futilis are presently unknown. Nymphal distribution records for R. hageni, R. morrisoni, and R. undulata specimens have are somewhat questionable. Although the keyed and compared with original descrip tions, morphological similarity between species and indi vidual variability does not permit positive determinations. been |
