Epeorus (Caucasiron) longimaculatus (Braasch, 1980) Figs 27, 28, 29

Iron longimaculatus Braasch, 1980

Epeorus (Caucasiron) longimaculatus (Braasch, 1980); in Kluge (2004)

Type locality.

Georgia, Mtskheta-Mtianeti Region, central Greater Caucasus, tributary of Aragvi River, 3 km above Pasanauri (1400-1500 m a.s.l.).

Distribution.

Georgia. Species endemic to the Greater Caucasus (Fig. 27).

Habitat.

Larvae inhabit small streams and rivers at middle altitude in the central Greater Caucasus. Altitudinal range of sampling sites 903-1193 m a.s.l. (Fig. 27).

Main morphological diagnostics of larvae.

(i) femora with elongated medial hypodermal spot (Fig. 28F-H); (ii) setae on abdominal terga wide at base (Fig. 29E); (iii) gill plates III without distinct projection (Fig. 29G); (iv) gill plates VII (in natural position from ventral view) narrow (Figs 28L, M, 29H-L); (v) denticles along posterior margin of tergum VII narrowed (Fig. 29E); (vi) abdominal terga V-VII with narrowed triangular medial macula (Fig. 28I-K); (vii) abdominal sterna without coloration pattern (Fig. 28B, N-P); (viii) tergum X without postero-lateral projections (Fig. 29N); (ix) shape of head of male ellipsoid (Fig. 28D).

Remarks.

Taxonomy. This species described based on male subimago and larva collected in central Greater Caucasus (Braasch 1980). The type series is currently deposited in SMNS. Larva associated with the subimago according to the coloration of abdomen. Male and female imagines not described.