Dilatitibialis rosa Canepari and Gordon

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: 43-44

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Dilatitibialis rosa Canepari and Gordon


34. Dilatitibialis rosa Canepari and Gordon   , new species

Description. Male holotype. Length 2.1 mm, width 1.7 mm; body rounded, slightly elongate, convex. Dorsal surface weakly alutaceous, shiny. Color yellow except pronotum with large, dark brown, oval mediobasal macula extended about 2/3 distance to anterior pronotal margin, macula with small, obliquely triangular yellow spot on each side of middle; elytron with 2 dark brown spots and sutural margin irregularly brown from scutellum to apex, anterior discal spot large, irregularly round, narrowly connected to sutural margin and to lateral margin, apical spot irregularly oval, narrowly connected to sutural margin and anterior discal spot ( Fig. 184 View Figures 184-199. 184-189 ); ventral surface with head, prosternum hypomeron, prosternum, meso- and metaventrite brownish yellow; abdomen brownish yellow medially, with lateral 1/ 4 and ventrites 5-6 yellow. Head punctures small, separated by about a diameter, each puncture as large as an eye facet; pronotal punctures larger than head punctures, separated by a diameter or less; elytral punctures larger than those on pronotum, separated by 1 to 3 times a diameter; metaventral punctures larger than those on elytron medially, separated by less than a diameter, coarser and separated by a diameter or less 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, weakly descending externally, deeply emarginate for reception of femoral apices. Protibia narrowly flanged, flange narrower than 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 1/6, with single carina extended to basal margin of prosternum. Metaventrite without sparse setal tuft. Basal abdominal ventrite without sparse 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 slightly flattened along posterior ventrite margin, extended forward, ventrite with sparse, short pubescence and large, dense punctures; ventrites 2-4 pubescent throughout, punctures large; ventrite 5 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; ventrite 6 short, narrow, depressed medially, apical margin broadly emarginate, sparsely pubescent on each side of median depression, lateral angle abruptly rounded, surface densely punctured. Apical tergite with apex truncate. Genitalia with basal lobe short, wide, 3/5 as long as paramere, asymmetrical, sides weakly convergent from base to apex, apex rounded; paramere wide, curved, Psc, apex with small, ventral projection ( Fig. 185, 186 View Figures 184-199. 184-189 ); sipho robust, strongly curved in basal 1/2, basal capsule large, inner arm long, slender, apex rounded, outer arm slightly longer than inner arm, with accessory piece, basal border broadly, deeply emarginate ( Fig. 187, 188 View Figures 184-199. 184-189 ).

Female. Similar to male except frons and vertex entirely brown, apex of brown area on frons triangularly projected. Spermathecal capsule, short, wide, slightly curved; bursal cap narrowly oval, with 2 arms, apical strut long, apex slightly widened ( Fig. 189 View Figures 184-199. 184-189 ).

Variation. Length 2.0 to 2.1 mm, width 1.6 to 1.7 mm. Elytral spots somewhat variable in size and shape.

Type material. Holotype male; ( Trinidad), Dept. Agr. grounds, Port-of-Spain Trin , Oct. 31, 1918. A- 840. Harold Morrison. ( USNM)   . Paratypes; 6, 1, ‘ Abadie’ , Trinidad, Oct. 15,1918. A-763. Harold Morrison ( USNM)   ; 2, 61/2. Post , Maracas Bay, Trinidad, W.I. Aug. 11, 22, 1969, H.& A. Howden ( USNM)   ; 1, Palo Seco , Trinidad, Oct. 20, 1918. A796, Harold Morrison ( USNM)   ; 1, Simla , 5mi. N. Arima, Trinidad, W.I. Aug. 20, 1969, H.& A. Howden ( USNM)   ; 1, Trinidad, St. George Co., Morne Bleu , 1950ft. 10 o 43’N 61 o 18’W. 14 Sep 1996, E. Fuller, beating: 2 forest. ( CMNH) ( USNM) GoogleMaps   .

Remarks. This little species is recognized by the dorsal color pattern which is similar only to that of Cyra distinguenda (Mulsant)   , also known from Trinidad, but not to any other species of Dilatitibialis   .


Smithsonian Institution, National Museum of Natural History


The Cleveland Museum of Natural History