Paraleuctra Hanson 1941

Paraleuctra

DIAGNOSIS: Paraleuctra adults are dark brown in color and very slender (Fig. 135). The cercal segments of males are heavily modified, surrounding the simple short epiproct which is oriented perpendicular to the body (Fig. 143). The female plate is bilobed and protrudes off the body (Fig. 144). Nymph have palps subequal to the glossae (Fig. 133), as opposed to Leuctra which has long palps. Nymphs lack short setae on the posterior margin of abdominal tergites (Fig. 134) which Leuctra nymphs possess.

DISTRIBUTION—Global: Holarctic— Regional: AOB— Aimag: SE, TO.

DISCUSSION: The genus Paraleuctra is richer in the Nearctic than the Palearctic. It is interesting that this points to connections east across Beringia while the distribution of L. fusca, which is similar in placement and extent to P. zapekinae Zhiltzova, 1974, is to the west, Europe. More collections from this range are warranted.