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Show 145 Family OLIGONEURIIDAE Subfamily Oligoneuriinae This remote family is possibility to found unknown from Idaho that in the occur tinguish following this in occurring genera and veins absent the (Fig. 59); present. (1) Forelegs at present coxae the inner the surface bases (Fig. 61); and of The there a dense maxillae, (3) gills on hind row tufts to are be wings of of long gills absent from the abdominal dis and intercalary appears (2) (Fig. 61); (2) the to forewings and and with serve segment fore one (Fig. 61). ventral Only one species, . powelli known from western North America, species, . saskatchewanensis described from Saskatchewan. the (1) that so veins on only other families longitudinal eight longitudinal setae characters Adults. with Nymphs. of from all genus Idaho: or is Hagen 1868 Lachlania distinctly triangular mostly fused there Lachlania Hagen will be genus combinations family and state. Genus The the Green River from the in Utah, Green River Ide L. and has in Utah and Edmunds and a closely (1941:154) powelli been (1951b:327) was has is related been described from subsequently reported Wyoming, and from the |