. Bulletin. Natural history; Natural history. March 1938 ROSS: NEARCTIC CADDIS FLIES 171 apical segment short and submembra- nous, the first and second very closely united, twice as long as the third and with a membranous mesal filament ex- tending almost the entire length of the combined two segments. Spur formula 2-2-4. Genitalia as in fig. 112. Sternites without processes. Ninth segment with lateral pointed extensions reaching into the eighth segment. Tenth tergite ap- pearing somewhat triangular viewed from above, narrowed to a subacute tip which is slightly depressed as seen from side; fr
. Bulletin. Natural history; Natural history. March 1938 ROSS: NEARCTIC CADDIS FLIES 171 apical segment short and submembra- nous, the first and second very closely united, twice as long as the third and with a membranous mesal filament ex- tending almost the entire length of the combined two segments. Spur formula 2-2-4. Genitalia as in fig. 112. Sternites without processes. Ninth segment with lateral pointed extensions reaching into the eighth segment. Tenth tergite ap- pearing somewhat triangular viewed from above, narrowed to a subacute tip which is slightly depressed as seen from side; from the baso-lateral corners extend a pair ot slender semisclerotized styles which reach almost to the apex of the tergite. Cerci short, obovate and flaplike, covered with sparse setae Claspers with base quite narrow, apica portion enlarged and reniform, the disto-ventral margin emarginate, the mesal margin with a long, clavate pro- cess extending up from base and a small, platelike projection at right angles to the clasper, one-tourth the distance from the apex; in addition, the dorsal margin near middle has a short, blunt mesal projection. The lateral aspect of the clasper, except at base, is covered with a scattering of long and very coarse setae. Oedagus bowed, the extreme base slight- ly enlarged and with a fingerlike process, the apical portion slightly enlarged and then excavated dorsally to form a nar- rowed and very slightly upturned apex. Holotype, male.—Smokemont, North Caro- lina: June 14, 1935, H. H. Ross. Paratype.—North Carolina.—Same data as tor holotype, Id'. Goerita new genus This genus differs from the Brachy- centrinae in having four spurs on the hind tibiae; from the Lepidostomatinae in having the spurs short and grouped close together toward the apex ot the tibia; from the Helicopsychinae in hav- ing the hind wings broad at base; from the Sericostomatinae in having the eyes smooth and not hairy. From the Goeri- nae, to which it is most closely related
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
