Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 57. (Budapest 1965)

Slater, J. A. ; Ahmad, I.: A contribution to the classification of Blissinae: the genera Riggiella and Bochrus (Heteroptera: Lygaeidae)

glabrous calloused spots on each segment midway between trichobothrial „spots" and meson, k) Mesosternum much longer than métasternum, 1) AU coxae widely separated, m) Fore coxae closed, n) Apical corial margin straight, o) Sperm reservoir of aedeagus greatly reduced so that little remains of the „lateral wings." Riggiella vianai was reported living on bamboo and presumably its broad flattened habitus is an adaptation to this ecological niche. Bochrus probably will be found to live in similar situations. Despite the numerous characters possessed in common Riggiella and Bochrus are quite distinct genera differing in the very distinct types of claspers, conformation of spines on the tegs and shape of eyes, in addition to the characters in the following distinguishing couplet. 1. Mesosternum with a distinct deep, trough-like median groove; labium elongate extending to or nearly to the mesocoxae; fore femora slender, equal in thickness or much thinner than middle and hind femora, armed on distal one-half with two or three short sharp spines, less spinose than other femora; hind femora of males greatly incrassate Bochrus — Mesosternum lacking a deep median trough; labium short at most slightly exceeding the fore coxae; fore femora very strongly incrassate, armed along entire ventral surface with an irregular series of prominent spines; hind femora incrassate in both sexes, not dimorphic Riggiella Key to Species of Riggiella 1. Pronotum with a transverse groove complete across center of disc (fig. 25), the groove gray and dull-velvety in texture in contrast to shining glabrous surface of remainder of pronotum; corium with two longitudinal stripes, the inner not touching the claval suture (fig. 18), groove of scent gland orifice curving caudad (fig. 12); legs dark brown to black; males with a heavy spur present on fore tibiae distinctus n.sp. - Pronotum lacking a complete dull gray median transverse furrow, this represented only by a deep irregular sometimes foveate groove at lateral margins (figs. 24 — 25); corium with a single longitudinal stripe, this adjoining the claval suture (fig. 19); legs usually bright yellow; both sexes lacking a tibial spur; groove of scent gland orifice curving anteriorly or almost straight (fig. 11) 2. 2. Second antenna! segment considerably longer than interocular space; hind tibiae and fore femora nearly subequal in length ; first valvifer with posterior margin curved and rounded anteriorly (fig. 15) vianai KORMILEV — Length of second antennái segment subequal to interocular space; length of hind tibiae considerably greater than that of fore femora; posterior margin of first valvifer nearly flat (fig. 16) planus n.sp. Riggiella distinctus new species Head, pronotum and scutellum black to very dark brown, antenniferous tubercles and tylus bright yellow; hemelytra (Fig. 18) strongly variegated with yellow and chocolate-brown, the dark areas as follows; entire clavus, apical corial margin for inner four-fifths of length, a narrow londitudinal stripe extending basad along cubital vein, and a very broad longitudinal stripe in area of radius extending from apical margin three-fourths of distance to corial base and strongly tapering cephalad; membrane chocolate-brown on greater portion of surface, becoming pale yellow on apical one-fourth and on an irregular area immediately adjacent to apex of corium; abdomen and all legs uniformly dark red-brown to castaneous; antennae with first segment yellow, concolorous with that of antenniferous tubercles and strongly contrasting with dark red-brown coloration of segments two, three and four. Head typical for genus, convex between the eyes, tylus extending cephalad nearly one-half distance to apex of first antennái segment; length head 1.02 mm., {0.95-1.02), width head 1.25 mm. (1.22-1.25), interocular space 0.8 mm. (0.75-