Hydropsyche lundaki, Chvojka, 2006

Chvojka, Pavel, 2006, Contribution to the knowledge of the caddisfly fauna (Trichoptera) of Iran: description of new species and new distributional data, Acta Entomologica Musei Nationalis Pragae 46, pp. 245-255 : 251

Hydropsyche lundaki sp. nov.

( Figs. 20-23 )

Type material. HOLOTYPE: J, IRAN: HAMADAN prov., springfed brook nr. Alanje 15 km W Asadabad, 34°45′N 47°58′E, 1680 m a.s.l., 5.-6.x.1998, P. Chvojka leg. ( NMPC) . PARATYPES: springfed brooks and streamlets nr. Alanje 15 km W Asadabad, the same data, 43 JJ ( NMPC), 5 JJ ( HM).

Description. Male. Length of forewing 6.3-8.3 mm. Colour (in alcohol): Body, wings, legs antennae, and palpi yellowish brown.

Male genitalia. Dorsal keel of segment IX long and very narrow, with almost straight parallel sides in dorsal view, its dorsal edge straight, directed dorso-caudally; dorsal cavity of segment IX large and deep. Segment X shorter than dorsal keel of segment IX, dorsal edge of segment X in lateral view with shallow excision dividing anterior rectangular part with setae and posterior broadly rounded part, caudal edge sinuate; dorsal cavity of segment X moderately deep; digitiform appendages of segment X long and thin, almost equally broad in lateral view, directed slightly upwards. Inferior appendage: coxopodite narrowed in proximal third, broader in distal third; harpago relatively long (almost 0.5 times as long as coxopodite), equally wide, only apex slightly dorso-ventrally depressed. Phallus moderately bent with dorsal hump in middle, with broad rounded apex in lateral view; apical part of phallus in ventral view with large, rounded lateral projections, slightly narrowed subapically and with rounded apical lobes.

Differential diagnosis. This species differs from all other known species of the instabilis group by its small size, pale coloration and the following combination of characters in the male genitalia: dorsal keel long and narrow; digitiform appendages long, thin and directed slightly upwards; apical part of phallus short and broad with large obtuse lateral projections.

Etymology. This species is dedicated to Tomáš Lundák, Praha, an excellent expedition driver.

Figures

Figs. 20-23. Hydropsyche lundaki sp. nov., male genitalia. 20 – lateral view; 21 – dorsal view; 22 – phallus, ventral view; 23 – right inferior appendage, ventro-caudal view.