Dilatitibialis shannon 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 : 61

52. Dilatitibialis shannon Canepari and Gordon , new species

Description. Male holotype. Length 2.6 mm, width 2.2 mm; body round, slightly elongate, convex. Dorsal surface smooth, shiny. Color black except head yellow, pronotum with apical 1/6 and lateral 1/4 yellow, black mediobasal macula broadly emarginate with yellow at anterolateral angle; elytron with 3 yellow spots, humeral spot small, triangular, discal spot large, narrowly oval, apical spot small, transversely oval ( Fig. 284 ); ventral surface with head, prosternum, meso- and metaventrites black; abdomen with ventrites 1-4 dark brown medially and brownish yellow in lateral 1/4, ventrites 5-6 brownish yellow. Head punctures small, separated by a diameter or less, each puncture slightly larger than an eye facet; pronotal punctures larger than head punctures, separated by a diameter or less; elytral punctures larger than on pronotum, separated by a diameter or less; metaventral punctures slightly larger than on elytron, separated by a diameter or less medially, coarser and 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 rounded, basal margin without trace of bordering line. Epipleuron narrow, grooved, weakly descending externally, deeply emarginate for reception of femoral apices. Protibia with narrow flange, flange about as wide as remainder of protibia. Carinae on prosternal process narrowly separated at apex, convergent to basal 1/6, 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 1/2 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, large; 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 2/3 length of paramere, asymmetrical, sides constricted medially, apex feebly rounded, nearly truncate; paramere straight, Pem, apex deeply emarginate medially ( Fig. 285, 286 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm short, wide, sides sinuate, apex obliquely truncate, outer arm longer and slightly wider than inner arm, with accessory piece, basal border deeply, shallowly emarginate ( Fig. 287, 288 ).

Female. Similar to male except head black, pronotum entirely black except anterolateral angle narrowly yellow, elytron without humeral spot. Genitalia with bursal cap oval, with 2 lateral arms, basally with 2 small, curved sclerites, apical strut short, apex abruptly flattened in lateral view ( Fig. 289 ).

Variation. Length 2.5 to 2.6 mm.

Type material. Holotype male; Peru, Satipo, XI, 1942, Paprzycki. ( USNM) . Paratypes; 4, 3, same data as holotype ( USNM): 1, Peru, Satipo , IX-X, 1942, Paprzycki ( USNM) .

Other specimens. 4. Brazil, Corumba , Acc.No. 2966 March ; Taperina, Acc.No.2966 ; Utinga , Belém, 10.X.1962, J.Bechyné col. ( CMNH) ( MZSP) .

Remarks. The dorsal color pattern will distinguish this species from all others except D. grace and D. kim , both of which have mostly unmodified male apical tergites and male genitalia with parameres not apically emarginate.

Specimens not designated as types have male genitalia apparently identical to the types, but all are from Brazil and all lack the apical spot on each elytron.

Figures

Figures 284-301. 284-289) Dilatitibialis shannon. 284) Habitus. 285) Phallobase ventral. 286) Phallobase lateral. 287) Enlarged siphonal apex. 288) Sipho. 289) Female genitalia. 290-295) Dilatitibialis sheila. 290) Habitus. 291) Phallobase ventral. 292) Phallobase lateral. 293) Enlarged siphonal apex. 294) Sipho. 295) Female genitalia. 296- 301) Dilatitibialis ethel. 296) Habitus. 297) Phallobase ventral. 298) Phallobase lateral. 299) Enlarged siphonal apex. 300) Sipho. 301) Female genitalia.