Dilatitibialis dilatata (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 : 49-50

40. Dilatitibialis dilatata (Crotch) , new combination

Hyperaspis dilatata Crotch, 1874: 213 ; Korschefsky 1931: 187; Blackwelder 1945: 446; Gordon 1987: 27.

Description. Male. Length 4.4 mm, width 3.7 mm; body round, slightly elongate, convex. Dorsal surface smooth, shiny. Color yellow, pronotum with faint, mediobasal, more or less M-shaped, darker yellow macula; elytron reddish yellow with small, triangular spot at humeral angle ( Fig. 218 ); ventral surface with head, prosternum, meso-and metaventrites dark brown; abdomen dark brown medially, brownish yellow in lateral 1/4 and ventrites 4-6. Head punctures small, separated by a diameter or less, each puncture about as large as an eye facet; pronotal punctures slightly larger than head punctures, separated by 1 to 2 times a diameter; elytral punctures larger than on pronotum, separated by 1 to 3 times a diameter; metaventral punctures larger than on elytron medially, separated by about a diameter, coarser and separated by less than a diameter toward lateral margin. Clypeus weakly emarginate apically, nearly truncate, lateral angle rounded, surface with sparse, long pubescence. Eye canthus about 6 eye facets long, curved outward, apically rounded, yellow. Pronotum narrowed from base to apex, basal and anterior angles abrupt, lateral margin rounded, basal margin without trace of bordering line medially. Epipleuron narrow, grooved, descending externally, deeply emarginate for reception of femoral apices. Protibia widely flanged, flange much wider than remainder of protibia, outer margin curved, smooth, sponda slightly extended beyond protibial flange. Carinae on prosternal process narrowly separated at apex, slightly convergent toward base, not joined, each carina ended before midpoint of prosternal process. Metaventrite without setal tuft. Basal abdominal ventrite without 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 rounded throughout, extended forward, ventrite with sparse, short pubescence and large, dense punctures; ventrites 2-4 pubescent throughout, punctures large, becoming denser toward lateral margin; 5th ventrite coarsely, densely punctured in basal 2/3, apical 1/3 depressed, 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 weakly emarginate, sparsely pubescent on each side of median depression, lateral angle abruptly rounded, surface densely punctured. Apical tergite with apex slightly emarginate. Genitalia with basal lobe slender, as long as paramere, asymmetrical, sides parallel, apex obliquely truncate; paramere wide, curved, Psc, apex with small, ventral projection ( Fig. 219, 220 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm short, wide, apex rounded, outer arm elongate, rather slender, longer than inner arm, with narrow, elongate projection at apex, with accessory piece, basal border broadly, weakly emarginate ( Fig. 221, 222 ).

Female. Similar to male except spermathecal capsule elongate, widened from base to apical 5/6, apical 1/6 slender, round; bursal cap oval with 2 sclerotized arms, apical strut short, laterally flattened in apical 1/2 ( Fig. 223 ).

Variation. Length 3.8 to 4.4 mm, width 2.9 to 3.7 mm.

Type locality. Brazil, Ega (Amazonas, Tefe).

Type depository. UMZC (lectotype designated by Gordon 1987).

Geographical distribution. Brazil.

Specimens examined. 6. Brazil. Amaz (Amazonas), St. Paul; Ega; Santarem. ( BMNH) UMZC).

Remarks. Dilatitibialis dilatata is distinctive within the genus because of the large size, nearly all yellow dorsal surface, short, incomplete prosternal carinae, and male genitalia with basal lobe long, slender; paramere apically rounded, not truncate; outer arm of siphonal capsule elongate, not as wide as in the similar appearing D. luteola .

The lectotype is a female, but there is little doubt it is the same species as the male described above.

Figures

Figures 218-234. 218-223) Dilatitibialis dilatata. 218) Habitus. 219) Phallobase ventral. 220) Phallobase lateral. 221) Enlarged siphonal apex. 222) Sipho. 223) Female genitalia. 224-228) Dilatitibialis edith. 224) Habitus. 225) Phallobase ventral. 226) Phallobase lateral. 227) anterior portion of Sipho. 228) Enlarged siphonal apex. 229-234) Dilatitibialis kim. 229) Habitus. 230) Phallobase ventral. 231) Phallobase lateral. 232) Enlarged siphonal apex. 233) Sipho. 234) Female genitalia.