3541 Author Judson, Sarah W. Author Nelson, C. Riley text Zootaxa 2012 2012-11-06 3541 1 118 journal article 1175­5334 505937B0-9F57-4068-82E6-8553826DD5AA Pictetiella asiactica Zwick & Levanidova, 1971 SYNONYMY Pictetiella asiatica Zwick & Levanidova, 1971 TYPE LOCALITY: Russia : Kamchatka . DIAGNOSIS: Adult coloration golden brown in preservation, with distinct pale markings on the clypeus, in the interocellar region, and along a pronotal median stripe ( Fig. 283 ). The tenth tergum of the male is divided ( Fig. 284 ), but lacks the distinct hemitergal processes found in Arcynopteryx ( Fig. 248 ) and Skwala ( Fig. 292 ). Rather, the hemitergal processes are flat and broad, primarily demarcated by a spinulose patch ( Fig. 284 ). The male paraprocts and epiproct are nearly inconspicuous externally ( Fig. 284 ), though the narrow, straight epiproct often protrudes and points posteriorly. Females have a large, broadly rounded plate that is incised basally and expanded posteriorly as two large lobes with a shallow notch. The plate extends completely over sternum 9, whereas all other Perlodinae have much shorter plates ( Fig. 293 ) though some Isoperlinae have long, more triangular plates ( Fig. 329 , 353 ). Nymph head coloration generally dark but with a pale diamond in the interocellar region( Fig. 286 ), similar to Filchneria mongolica . The ventral side of nymph head has long submental gills ( Fig. 244 ). DISTRIBUTION—Global: East Palearctic— Regional: AOB^— Aimag: KhG^. DISCUSSION: This species is a new record for Mongolia which seems to be restricted to the Khovsgol lake region. Since there is only one documented occurrence, we were unable to generate a map of the predicted range.