Incasa, Gnezdilov & O’Brien, 2008

Gnezdilov, Vladimir M. & O’Brien, Lois B., 2008, New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea), Insecta Mundi 2008 (31), pp. 1-26 : 9

GENUS Incasa gen. n.

Type species: Hysteropterum riobambae Schmidt 1910 , here designated.

Diagnosis: Metope longer than wide, with strong median carina, sublateral carinae indistinct. Coryphe transverse, short, depressed medially, anterior margin straight. Pronotum without carinae. Scutellum with distinct lateral carinae and sometimes with weak median carina. Fore wings nearly oval, widely rounded apically, with narrow hypocostal plate. Radius and median bifurcate, cubitus anterior simple (R 2 M 2 CuA 1). Hind wings rudimentary. Hind tibia with 2 lateral teeth distally. Metatarsomere I with 5 intermediate socle setae.

Male ( Fig. 26-32 ). Anal tube long and narrow, truncated apically. Anal column short. Pygofer with nearly straight hind margin. Phallobase curved at right angle (in lateral view). Each dorsolateral phallobase lobe with narrow short subapical process and triangular long process above aedeagal hooks. Ventral phallobase lobe long and wide, narrowing to notched rounded apex. Ventral aedeagal hooks long, bifurcate. Style with straight hind margin, caudo-dorsal angle nearly straight. Capitulum of style on long neck, narrow (in dorsal view), with additional tooth, lateral tooth wide, apical tooth large.

Female. Sternum VII with widely concave hind margin. Anal tube elongate, parallel sided, with truncated apex. Anal column short. Gonoplacs without carinae. Distal parts of posterior connective lamina of gonapophyses IX turned at nearly right angle. Median field of the lamina convex, with deep incision between lobes. Lateral fields of the lamina weakly convex. Anterior connective lamina of gonapophysis VIII with 3 teeth in apical group and 5 teeth (including 3 keeled teeth) in lateral group. Hind margin of gonocoxa VIII not protruding. Endogonocoxal process bifurcate apically (with two finger-shaped apical processes). Gonospiculum bridge laterally flattened.

Etymology: The generic name is derived from the ancient South American nation - Incas. It is feminine in gender.

Comparison: The genus differs from Hysteropterum s. str. as follows: metope with strong median carina, sublateral carinae indistinct; ventral aedeagal hooks bifurcate. The genus differs from other American genera by the structure of the phallobase which is curved at a right angle and each of its dorsolateral lobes has a narrow short subapical process. Also the structure of the style which has a wide plate with straight hind margin and an elongate capitulum on a long neck, with an additional tooth.

Figures

Figure 26-32. Incasa riobambae (Schmidt), male genitalia. 26) Aedeagus, ventral view. 27) Aedeagus, lateral view. 28) Anal tube, dorsal view. 29) Anal tube, lateral view. 30) Style, lateral view. 31) Capitulum of style, dorsal view. 32) Pygofer, lateral view.