Dilatitibialis robin Canepari and Gordon, 2013

Canepari, Claudio, Gordon, Robert D. & Hanley, Guy A., 2013, South American Coccinellidae (Coleoptera), Part XV: systematic revision of Dilatitibialis Duverger (Coccidulinae; Hyperaspidini), Insecta Mundi 2013 (312), pp. 1-91 : 30-31

20. Dilatitibialis robin Canepari and Gordon , new species

Description. Male holotype. Length 2.0 mm, width 1.6 mm; body rounded, slightly elongate, convex. Dorsal surface shiny, lacking alutaceous sculpture. Color black except pronotum with large, yellow rectangular anterolateral angle, apex with median 1/5 yellow with faint, yellow emargination of median dark area; elytron with 5 large, yellow spots arranged in rows of 2, plus an apical spot, mediolateral spot strongly projected inward, apical spot broadly transverse, anterior border straight ( Fig. 107 ); ventral surface with head, prosternum, meso- and metaventrites black to dark brown, remainder of surface yellow; abdomen yellowish brown. Head punctures small, separated by a diameter or less, each puncture as large as an eye facet; pronotal punctures slightly larger than head punctures, separated by a diameter or less; elytral punctures larger than on pronotum, separated by a diameter or less; metaventral punctures fine, sparse medially, separated by less than a diameter toward lateral margin. Clypeus weakly emarginate apically, lateral angle rounded, surface with sparse, long pubescence. Eye canthus about 5 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal and anterior angles abrupt, lateral margin slightly rounded, basal margin without trace of bordering line. Epipleuron narrow, grooved, not descending externally, deeply emarginate for reception of femoral apices. Protibia widely flanged, flange slightly wider than remainder of protibia, outer margin curved, smooth, sponda slightly extended beyond protibial flange. Carinae on prosternal process widely separated at apex, convergent toward base, joined at basal 1/5 with single carina extended to basal margin of prosternum. Metaventrite without setal tuft. Basal abdominal ventrite without setal tuft. Abdomen with primary pores laterally between ventrites 4-5 small, extended under apical 1/4 of 4th ventrite; postcoxal line on basal abdominal ventrite rounded throughout, extended forward, ventrite with sparse, long pubescence and large, dense punctures medially; ventrites 2-4 pubescent throughout, punctures large medially, small, dense, becoming denser toward lateral margin; 5th ventrite coarsely, densely punctured in basal 2/3, apical 1/3 depressed, densely, finely punctured, feebly depressed by primary pore laterally, without tubercle on each side of middle, apical margin broadly, weakly emarginate; 6th ventrite short, narrow, depressed medially, apical margin broadly emarginate, sparsely pubescent on each side of median depression, lateral angle abruptly rounded, surface feebly punctured. Apical tergite finely, densely punctured, pubescent, apex rounded. Genitalia with basal lobe as long as paramere, asymmetrical, sides weakly convergent from base to apex, apex weakly notched; paramere slender, Psc, apex with small, ventral projection, dorsal margin strongly rounded ( Fig. 108-110 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm slender, apex rounded, outer arm wider and longer than inner arm, with accessory piece, basal border broadly, deeply emarginate (Fig. 111,112).

Female. Unknown.

Variation. Unknown.

Type material. Holotype male; Venezuela, Aragua, Cer. Choroni, 1600m., Feb. 26, 1971, H. and A. Howden. ( USNM).

Remarks. Small size, large yellow spots on elytron, and male genitalia distinguish this species from D. lillian , a species with the same general dorsal color pattern.

Figures

Figures 102-117. 102-106) Dilatitibialis emily. 102) Habitus. 103) Phallobase ventral. 104) Phallobase lateral. 105) Sipho. 106) Enlarged siphonal apex. 107-112) Dilatitibialis robin. 107) Habitus. 108) Phallobase lateral (right side). 109) Phallobase ventral. 110) Phallobase lateral (left side). 111) Enlarged siphonal apex. 112) Sipho. 113- 117) Dilatitibialis peggy. 113) Habitus. 114) Phallobase ventral. 115) Phallobase lateral. 116) Sipho. 117) Enlarged siphonal apex.