Boundarus Li & Wang

Boundarus Li & Wang, 1998: 198 .

Type species: Boundarus trimaculatus Li & Wang.

Head (Fig. 19) rounded anteriorly, shorter than pronotum and scutellum together; crown with median longitudinal carina distinct, not extending to apex of head, disc concave, lateral margins poorly delimited; submarginal carina mesad of ocelli on crown. Face including eyes (Figs 3, 6, 9, 12, 15, 18) longer than wide; frontoclypeus with median longitudinal carina and oblique striae laterally; clypellus broad, swollen basally, narrowed apically; lora large, flat, reaching apex of clypellus; gena strongly declivous laterally. Pronotum (Figs 1, 4, 7, 10, 13, 16, 19) broad, slightly wider than head. Scutellum (Figs 1, 4, 7, 10, 13, 16, 19) triangular, shorter than pronotum; transverse depression distinct. Forewing (Figs 1, 4, 7, 10, 13, 16, 19) yellowish brown with dark black patches, or generally black; claval veins separate throughout length; four apical cells present, appendix broad. Hind femoral spinulation 2+1+1.

Male pygofer (Figs 21, 26, 31) tapered apically in lateral view, without ventral process. Subgenital plate (Figs 25, 30, 35) elongate, with hair-like setae or macrosetae arranged in rows. Style (Figs 24, 29, 34) with basal articulating arm short, apophysis well developed, foot-like apical process with several setae and elongate lateral angle; connective (Figs 24, 29, 34) Y-shaped, stem very long. Aedeagus (Figs 22–23, 27–28, 32–33) in lateral view curved dorsad, with pair of apical processes and pair of well developed processes on dorsal part of atrium, respectively; gonopore apical.

Female slightly longer than male, with abdomen extending beyond apex of forewing (Fig. 4). First valvula (Figs 38–39, 42–43, 46–47) with longitudinal striations extending over distal one third and attaining dorsal margin; second valvula with dorsal sclerotised and hyaline area present, dorsal margin with rounded teeth on distal third (Figs 36–37, 40–41, 44–45).

Remarks: The genus Boundarus is similar to Evacanthus Le Peletier & Serville and Onukia Ishihara, but it can be easily distinguished from the latter two genera by: 1) lateral margins of crown poorly delimited; 2) veins R1a and C in forewing fused and forming an acute angle (not right angle as in the other two genera); 3) male genitalia with pair of anterior processes near middle of aedeagus (see table 1 for details).

Taxa characteristics