Dilatitibialis rita 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 : 35

25. Dilatitibialis rita Canepari and Gordon , new species

Description. Male holotype. Length 2.0 mm, width 1.6 mm; body rounded, slightly elongate, convex. Dorsal surface with head shiny, pronotum and elytron weakly alutaceous, shiny. Color black except pronotum with anterolateral angle broadly yellow, anterior 1/7 yellow; elytron with 3 small, yellow spots, humeral spot triangular, scutellar spot irregularly rounded, apical spot irregularly triangular ( Fig. 135 ); ventral surface with antenna, mouthparts, prothoracic hypomeron, legs yellow; abdomen yellowish brown. 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 less than to twice a diameter; elytral punctures larger than on pronotum, separated by less than to twice diameter; metaventral punctures larger than on elytron, separated by a diameter or less medially, coarser, separated by less than a diameter toward lateral margin. Clypeus weakly emarginate apically, 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 weakly rounded, basal margin without trace of bordering line. Epipleuron narrow, grooved, not descending externally, deeply emarginate for reception of femoral apices. Protibia narrowly flanged, flange as wide as remainder of protibia, outer margin curved, smooth, sponda weakly extended beyond protibial flange. Carinae on prosternal process widely separated at apex, convergent toward base, joined at basal 1/7 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 large, extended under apical 1/3 of 4th ventrite; postcoxal line on basal abdominal ventrite flattened along posterior ventrite margin, 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, 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 weakly emarginate. Genitalia with basal lobe short, wide, 3/4 as long as paramere, asymmetrical, sides weakly convergent near apex, apex rounded; paramere wide, curved, Psc, apex with small, ventral projection ( Fig. 136, 137 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm long, slender, apex obliquely truncate, outer arm wider and about as long as inner arm, with accessory piece, basal border broadly emarginate ( Fig. 138, 139 ).

Female. Unknown.

Variation. Unknown.

Type material. Holotype male; ( Brazil), Espiritu Santo. ( ZMHB).

Remarks. Dilatitibialis rita is distinguished by the unusual elytral spot pattern and male genitalia. The male holotype has 3 small, yellow spots on each elytron, a pattern that may indicate that the female has only 2 spots, lacking the humeral spot. This species has the same basic color pattern as D. diana , but male genitalia place these 2 species in different parts of the genus.

Figures

Figures 135-151. 135-139) Dilatitibialis rita. 135) Habitus. 136) Phallobase ventral. 137) Phallobase lateral. 138) Sipho. 139) Enlarged siphonal apex. 140-145) Dilatitibialis dawn. 140) Habitus. 141) Phallobase ventral. 142) Phallobase lateral. 143) Sipho. 144) Enlarged siphonal apex. 145) spermathecal capsule of Female genitalia. 146-151) Dilatitibialis scenica. 146) Habitus. 147) Phallobase ventral. 148) Phallobase lateral. 149) Enlarged siphonal apex. 150) Sipho. 151) Female genitalia.