Pteronarcys reticulata (Burmeister, 1839)

Judson, Sarah W. & Nelson, C. Riley, 2012, 3541, Zootaxa 3541, pp. 1-118 : 51

Pteronarcys reticulata (Burmeister, 1839)

SYNONYMY

Perla reticulata Burmeister, 1839

Pteronarcys reticulata Pictet, 1841

Allonarcys reticulata Zwick et al., 1971

Pteronarcys reticulata Nelson and Hanson, 1971

TYPE LOCALITY: Siberia: Barnaul.

DIAGNOSIS: This species is the only representative of Pteronarcyidae in Mongolia and can therefore be distinguished at the family level by size, coloration, and gill presence. Adult male hemitergal processes are membranous with a medial sclerotization ( Fig. 358). The hemitergal processes curve anterio-medially towards and extend onto sternum 10. The female subgenital plate is deeply notched with two tapered, posteriorly-directed lobes ( Fig. 359) which are often darkly colored. Nymph are uniformly dark brown and have sharply angular corners on the pronotum ( Fig. 360). Nymphs can be identified most readily confirmed by presence of branched gills on abdominal segments 1 and 2 ( Fig. 4).

DISTRIBUTION—Global: East Palearctic— Regional: AOB— Aimag: AR^, BU, KhG^, SE.

DISCUSSION: A similar species, P. sachalina Klapálek 1908 , is widely known throughout the Palearctic and in sympatry with P. reticulata . It has yet to be documented in Mongolia, but should not be dismissed from consideration. The nymphs of these two species are indistinguishable (Zwick & Teslenko 2001).