Dilatitibialis ethel 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 : 63

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Dilatitibialis ethel Canepari and Gordon


54. Dilatitibialis ethel Canepari and Gordon , new species

Description. Male holotype. Length 3.0 mm, width 2.5 mm; body round, slightly elongate, convex. Dorsal surface with head alutaceous, dull, pronotum and elytron smooth, shiny. Color black except head yellow, pronotum yellow with small black basomedian vitta extended 1/2 distance to anterior pronotal margin, apex of macula broadly, shallowly emarginate with yellow; elytron with single, wide, medially constricted yellow median vitta and lateral border broadly yellow ( Fig. 296 View Figures 284-301. 284-289 ); 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 yellowish brown. Head punctures small, separated by less than a diameter, each puncture about as large as 2 eye facets; pronotal punctures larger than head punctures, separated by a diameter or less; elytral punctures larger than on pronotum, separated by 1 to 2 times a diameter; metaventral punctures slightly larger than on elytron medially, separated by a diameter or less, 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 4 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 1/8 with single carina extended to pronotal base. Metaventrite without setal tuft. Basal abdominal ventrite with sparse median 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, 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 1/2 length of paramere, asymmetrical, sides constricted medially, apex obliquely truncate; paramere straight, Pem, apex deeply emarginate medially ( Fig. 297, 298 View Figures 284-301. 284-289 ); sipho robust, strongly curved in basal 1/2, basal capsule lost ( Fig. 299, 300 View Figures 284-301. 284-289 ).

Female. Similar to male except head black with yellowish brown clypeus, pronotum entirely black except anterolateral angle narrowly yellow, elytron with lateral yellow border short, extended from humeral angle 1/3 distance to apex of elytron. Genitalia with spermatheca long, slender, cornu feebly widened; bursal cap broadly oval, with 2 lateral arms and faint median arm, with small, curved sclerite between lateral and median arms, apical strut short, widened from base to apex ( Fig. 301 View Figures 284-301. 284-289 ).

Variation. Length 3.30 to 3.4 mm. Elytron with median vitta weakly constricted medially, or widened from middle to apex.

Type material. Holotype male; Ecuador, Los Rios, Rio Palenque , 47 km S Sto. Domingo, 220m, VIII-26- 1997, Fred G. Andrews. ( CSCA) . Paratype; 1, Ecuador, Esmeraldas, 31.7 km NW Lita, 62 o Om 0 59.21N / 78 o 35.15 W, VIII-23-1997, Fred G. Andrews ( CSCA) GoogleMaps .

Remarks. The dorsal color pattern is unique within the genus, and will serve to identify this species.


California State Collection of Arthropods