7) somewhat rectangular but widest just ventrad
of midheight, thereafter tapered ventrally; surstylus apparently fused to ventral margin of epandrium as a tapered, ventral projection; cerci robustly developed, 2 x as high as wide in posterior view (Fig.
Based on the sub-generic character trait of the lateral trunk ridge being deflected ventrad
near anal ring (Dawson 1985), Hippichthys albomaculosus is referable to the subgenus Hippichthys along with H.
Tegulum slightly spiraled perpendicularly to the main palpal axis, towards the tip of the cymbium, with distal laminar, triangular projection, bent at the tip and bearing a small hyaline protuberance and a serrated keel at the base of a filiform embolus, curved prolaterally dorsad, running a semicircle behind tegulum, appearing retrolaterally and pointing ventrad
in the male palp (Figs.
The Belostoma plebejum group includes seven small species with the ventral diverticulum of male genitalia recurved ventrad
: Belostoma lariversi De Carlo, 1969; B.
Both species possess comparable beak placement, the number of umbonal corrugations that curve ventrad
around the umbo, disc convexity, and node shape, node prominence, and number of nodes.
Two protibial sensilla had ventrad
origins with one in a posteroventral position and the second inserted ventrally between that sensillum and the anteroventral spinular spinulae (comb).
The whorl-section is oval with flanks tapering only slightly ventrad
. The umbilical wall is vertical, and the conch is near involute, each whorl overlapping nearly all of the preceding whorl.
Macrosculpture of metepisternum becoming villiform ventrad
. Anterior supracoxale delimited from metepisternum by deep dorsal longitudinal groove, and with 3-4 anterior longitudinal grooves.
24, 25), median apophysis with ventral division acute, guide of dorsal division acute and directed ventrad
; retrolateral tibial apophysis ental division with two lobes, ectal division curved apically and directed medially.
The density of ribbing, the absence or near-absence of a keel, the ribs often meeting across the venter, the slight ventrad
increase in width of the ribs, and the generally rectiradiate ventral ends of the ribs all indicate Sowerby's species.
Metope wide (L:W at widest point 1.14), sharply enlarged above clypeus (near level of antennae in frontal view), with distinct median carina running from fastigium to level of antennae, obsolete ventrad