Dilatitibialis hybridula (Crotch) Canepari, Claudio, Gordon, Robert D. & Hanley, Guy A., 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 : 16-17

7. Dilatitibialis hybridula (Crotch) , new combination

Hyperaspis hybridula Crotch, 1874: 218 ; Korschefsky 1931: 190; Blackwelder 1945: 447: Gordon 1987: 27.

Cyra hybridula: Milléo et al. 1997: 398 .

Description. Male. Length 4.0 mm, width 3.3 mm; body rounded, convex. Dorsal surface shiny, lacking alutaceous sculpture except head alutaceous, dull. Color yellow except pronotum with 7 brown spots, 1 small, round spot on each side in lateral 1/4, 1 small, round, basomedian spot anterior to scutellum, 1 triangular basal spot on each side of middle anterior to scutellum, 1 elongate spot medially on each side of middle; elytron with 7 brown spots, suture narrowly bordered with brown macula, macula widened anterior to middle, 1 triangular spot near suture laterad of scutellum, 1 short, elongate spot near suture in apical 1/2, 1 elongate spot on apical declivity near suture, 1 long, irregular spot extended from humeral callus toward suture, then posteriorly onto apical declivity, 1 triangular spot on apical declivity near lateral margin ( Fig. 33 ); ventral surface with prosternum, meso- and metaventrites dark brown; abdomen mostly yellow. Head punctures small, separated by less than to a diameter, as large as or slightly larger than an eye facet; pronotal punctures slightly larger than head punctures, separated by a diameter or less; elytral punctures as large as those on pronotum, separated by less than to twice a diameter; metaventral punctures larger than those on pronotum, separated by a diameter or less medially, becoming larger and separated by less than a diameter toward lateral margin. Clypeus apically emarginate, lateral angle rounded, surface with sparse, long pubescence. Eye canthus about 6 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal and anterior angles abrupt, lateral margin feebly curved, basal margin without bordering line. Epipleuron narrow, grooved, descending externally, deeply emarginate for reception of femoral apices. Protibia narrowly flanged, flange as wide as remainder of protibia, outer margin rounded, smooth, sponda represented by diagonal ridge across flange. Carinae on prosternal process widely separated at apex, nearly parallel to basal 1/3, joined at basal 1/3 with single carina extended to basal margin of prosternum. Metaventrite without setal tuft. Basal abdominal ventrite with sparse setal tuft. Abdomen with primary pores laterally between ventrites 4-5 small, extended under apical 1/4 of ventrite 4; postcoxal line on basal abdominal ventrite rounded, extended to apical margin of ventrite at middle, slightly flattened along margin, then broadly forward, ventrite with sparse, long pubescence and dense, sparse punctures medially; ventrites 2-4 sparsely pubescent throughout, punctures small, sparse; 5th ventrite depressed medially at apex, sparse patch of long pubescence on each side of median depression, without tubercle on each side of middle, apical margin broadly emarginate, surface densely punctate; 6th ventrite short, narrow, depressed medially, apical margin broadly emarginate, sparsely pubescent on each side of median depression, surface nearly impunctate. Apical tergite densely punctured, pubescent, apical border rounded. Genitalia with basal lobe shorter than paramere, asymmetrical, slender, narrowed from base to oblique apex; paramere Unm, widest at middle, apex rounded ( Fig. 34, 35 ); sipho robust, strongly curved in basal 3/4, basal capsule large, inner arm short, narrow, apically obliquely truncate, outer arm wider than inner arm, slightly longer than inner arm, with large accessory piece, basal border widely emarginate ( Fig. 36, 37 ).

Female. Similar to male except head with small, triangular brown spot on frons. Genitalia with spermathecal capsule short, wide, cornu not widened; bursal cap widely rounded, with 3 distinct arms, apical strut long, spatulate at apex in lateral view ( Fig. 38 ).

Variation. Length 3.6 to 4.0 mm, width 3.0 to 3.3 mm. Elytron with brown spot extended from humeral callus onto apical declivity, may have spot disconnected laterad of callus, giving elytron 8 brown spots instead of 7.

Type locality. Brazil.

Type depository. UMZC (holotype, examined).

Geographical distribution. Argentina, Brazil.

Specimens examined. 6. Argentina. Misiones. Brazil. Santa Catarina, Nova Teutonia. ( BMNH) ( JEBC) ( UMZC) ( USNM).

Remarks. The strikingly vittate appearance of the dorsal color pattern distinguishes D. hybridula . See remarks under D. glyphica .

Milléo et al. (1997) correctly transferred this species from Hyperaspidini to Brachiacanthini , placing it in Cyra . Because it has obvious primary abdominal pores, we transfer C. hybridula to Dilatitibialis .

Figures

Figures 33-49. 33-38) Dilatitibialis hybridula. 33) Habitus. 34) Phallobase ventral. 35) Phallobase lateral. 36) Enlarged siphonal apex. 37) Sipho. 38) Female genitalia. 39-44) Dilatitibialis glyphica. 39) Habitus. 40) Phallobase ventral. 41) Phallobase lateral. 42) Enlarged siphonal apex. 43) Sipho. 44) Female genitalia. 45-49) Dilatitibialis paula. 45) Habitus. 46) Phallobase ventral. 47) Phallobase lateral. 48) Sipho. 49) Enlarged siphonal apex.