Isocapnia kudia Ricker, 1959

Judson, Sarah W. & Nelson, C. Riley, 2012, 3541, Zootaxa 3541, pp. 1-118 : 21

Isocapnia kudia Ricker, 1959

SYNONYMY

Isocapnia kudia Ricker, 1959

TYPE LOCALITY: USSR: Siberia , Amagu, Kudia river .

DIAGNOSIS: The male epiproct ( Fig. 56) of this species is elongate, approximately the length of 2 abdominal segments. The apex of the epiproct has two small hooks, one at the apex and one slightly farther down the shaft of the epiproct. In contrast, I. guentheri has one subapical hook and I. sibirica has none. The epiproct of I. kudia is also angular in cross section, whereas those of other Isocapnia are more cylindrical. The ventral vesicle of male sternum 9 is indistinct compared to other Isocapnia , forming a simple oval with peripheral hairs which match the body color ( Fig. 57) and as such are often difficult to see. In our single male specimen collected from Mongolia, the vesicle was recessed ( Fig. 57) but this character is likely not diagnostic. The female subgenital plate of this species is the most distinctive of Mongolian Isocapnia . The plate has two distinct medially directed lobes ( Fig. 58) that partially enclose a membranous medial section. The nymph has a central dark mark on the head which continues into a dark area behind the eyes, where as I. guentheri has light coloration behind the eyes and the nymph of I. sibirica is unknown.

DISTRIBUTION—Global: East Palaearctic— Regional: AOB^— Aimag: KhG^.

DISCUSSION: This is the first documented occurence of I. kudia in Mongolia. It is otherwise well-known throughout the Palearctic (Zenger & Baumann 2004).

Isocapnia sibirica (Zapekina-Dulkeit, 1955)