Dilatitibialis thelma 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 : 60

51. Dilatitibialis thelma Canepari and Gordon , new species

Description. Male holotype. Length 3.3 mm, width 2.7 mm; body round, slightly elongate, convex. Dorsal surface smooth, shiny. Color yellow except pronotum with 4 spots, 2 small, black, triangular spots at middle of surface, 1 black, mediobasal spot narrowly extended entirely across base of pronotum, with short, angulate projection on each side of middle, and 1 small, brown spot at middle of base; elytron narrowly bordered with black margin except border lacking from base to humeral callus, border slightly widened from scutellum to apex of disc, 4 small, black spots on elytron, humeral spot irregularly oval, mediolateral spot connected to lateral margin, discal spot irregularly transverse, narrowly connected to humeral spot, spot on apical declivity irregularly, transversely oval ( Fig. 279 ); ventral surface with head, prosternum, meso- and metaventrite black; abdomen with ventrites 1-4 dark brown medially and yellowish brown in lateral 1/4, ventrites 5-6 brownish yellow. Head punctures small, separated by a diameter or less, each puncture as large as an eye facet; pronotal punctures larger than head punctures, separated by less than to twice a diameter; elytral punctures smaller than on pronotum, separated by less than to twice a diameter; metaventral punctures slightly larger than on elytron medially, sparse, separated by 1 to 3 times a diameter, coarser and separated by less than a diameter toward lateral margin. Clypeus emarginate apically, lateral angle rounded, surface with sparse, long pubescence. Eye canthus about 4 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal and anterior angles abrupt, lateral margin straight, basal margin without trace of bordering line. Epipleuron narrow, grooved, weakly descending externally, deeply emarginate for reception of femoral apices. Protibia without flange. Carinae on prosternal process narrowly separated at apex, nearly parallel to basal 1/8 with single carina extended to pronotal base. Metaventrite without setal tuft. Basal abdominal ventrite with setal tuft. Abdomen with primary pores laterally between ventrites 4-5 large, extended under apical 1/3 of 4th ventrite; postcoxal line on basal abdominal ventrite weakly flattened along posterior ventrite margin, extended forward, ventrite with short pubescence and large, dense punctures; ventrites 2-4 pubescent throughout, punctures dense, small; 5th ventrite densely, coarsely punctured, depressed medially, deeply depressed by primary pore laterally, without tubercle on each side of middle, apical margin broadly, deeply emarginate; 6th ventrite short, narrow, depressed medially, apical margin deeply emarginate, densely pubescent on each side of median depression, lateral angle abruptly rounded, surface densely punctured. Apical tergite with apex deeply, broadly emarginate, lateral angle strongly projected. Genitalia with basal lobe slender, about 1/2 length of paramere, asymmetrical, sides slightly convergent from base to apex, apex obliquely truncate; paramere straight, apex Pem, deeply emarginate medially ( Fig. 280, 281 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm short, wide, sides sinuate, apex truncate, outer arm longer and slightly wider than inner arm, with accessory piece, basal border deeply, shallowly emarginate ( Fig. 282, 283 ).

Female. Unknown.

Variation. Unknown.

Type material. Holotype male; ( Peru), Paltaybamba , 5000 ft., 6 August, 1911, Yale Peruv Exp. ( USNM).

Remarks. This is one of 4 Dilatitibialis species having male genitalia with an apically emarginate paramere of the male genitalia. The dorsal color pattern is unique to this species and will distinguish it from other members of this group as well as other species of Dilatitibialis .

Figures

Figures 268-283. 268-273) Dilatitibialis guttipennis. 268) Habitus. 269) Phallobase ventral. 270) Phallobase lateral. 271) Enlarged siphonal apex. 272) Sipho. 273) Female genitalia.274-278) Dilatitibialis josephine. 274) Habitus. 275) Phallobase ventral. 276) Phallobase lateral. 277) Sipho. 278) Enlarged siphonal apex. 279-283) Dilatitibialis thelma. 279) Habitus. 280) Phallobase ventral. 281) Phallobase lateral. 282) Sipho. 283) Enlarged siphonal apex.