Caystrus nuristanus Linnavuori

Caystrus nuristanus Linnavuori

( Figs. 1 -3)

Caystrus nuristanus Linnavuori 1974 : 400-401.

Coloration and general shape:

Body pale ochraceous darkly punctuate, punctures of head very closely to each other; eyes pale grey; ocelli red; membrane grayish; body broadly ovate.

Head: Head distinctly broader than long; paraclypei broad and longer than clypeus, lateral margins in front of eyes shallowly insinuated; antennae gracile, proportion between segments 14:26:26:32:38 antennal formula 1<2<3<4<5; labium slightly beyond mesocoxae.

Thorax: Pronotum 2.3x broader than its length, lateral margins distinctly curved humeral angles blunt; scutellum 1.26 x longer than broad, lateral margins of elytra distinctly curved, connexiva slightly exposed.

Male genitalia:

Pygophore ( Fig. 1) quadrangular shaped, dorsomedian surface deeply concave, lateral lobe subrounded, ventromedian surface medially inpushed bilobed; paramere ( Fig. 2) some what F-shaped, outer margins distinctly convex, apex of blade sharply beak like pointed, a bunch of hairs present at inner process.

Location of type:

Holotype male, Afghanistan, 25 km N. Barikot, Nuristan, NHMW.

Comparative note:

This species is most closely related to C. ventralis in having lateral margins of pronotum convex and costal margins of hemelytra distinctly curved but it can easily be separated from the same in having head more elongated 1.3 x as broad as long and tibia and tarsi with dark spots.