Brachiacantha hazel Gordon and Canepari, 2014

Gordon, Robert D., Canepari, Claudio & Hanley, Guy A., 2014, South American Coccinellidae (Coleoptera), Part XVI: systematic revision of Brachiacantha Dejean (Coccinellinae: Hyperaspidini), Insecta Mundi 2014 (390), pp. 1-76 : 22-23

13. Brachiacantha hazel Gordon and Canepari , new species

Description. Male holotype. Length 3.3 mm, width 2.6 mm; body elongate oval, convex. Dorsal surface with head alutaceous, feebly shiny, pronotum slightly alutaceous, shiny, elytron smooth, shiny. Color yellow except head with black vertex, pronotum with black basomedian macula wide basally, slightly extended anteriorly at each end, and large, long median projection extended 4/5 distance to anterior pronotal border; elytron yellow with sutural margin black, and 4 black spots, basal spot extended from scutellum laterally past humeral callus, discal spot oval, attached to black sutural border, mediolateral spot not reaching lateral margin, apical spot on sutural margin ( Fig. 69 ); ventral surface with head, prosternum, meso- and metaventrites black, legs with trochanter pale brown; abdomen brownish yellow except median 1/3 of ventrites 1–3 dark brown. Head punctures small, separated by a diameter or less, each puncture slightly smaller than an eye facet; pronotal punctures larger than head punctures, separated by less than to twice a diameter, elytral punctures larger than on pronotum, separated by 1 to 3 times diameter; metaventral punctures larger than on elytron, separated by a diameter medially, larger and separated by less than a diameter laterally. 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 straight, basal margin without trace of bordering line medially. Epipleuron narrow, descending externally, deeply emarginate for reception of femoral apices. Protibia narrowly flanged, flange about 1/4 as wide as remainder of protibia, outer margin straight, smooth, basal tooth small, triangular, about 1/12 width of tibia at base, sponda extended beyond protibial flange ( Fig. 70 ). Carinae on prosternal process widely separated at apex, convergent, joined at middle of prosternum. Metaventrite without setal tuft. Basal abdominal ventrite without setal tuft. Abdomen with postcoxal line on basal abdominal ventrite flattened along apical ventrite margin, curved forward at apex, ventrite with sparse, long pubescence and small, dense punctures; ventrites 2–6 pubescent throughout, punctures fine, dense; ventrite 3 without cusp on each side of middle; 5th ventrite depressed in median 1/3, apex slightly emarginate; 6th ventrite medially depressed, apex shallowly emarginate. Apical tergite finely, densely punctured, apex weakly emarginate. Genitalia with basal lobe about as long as paramere, symmetrical, sides straight, convergent from base to acute apex; paramere Psc, wide, strongly curved, slightly widened from base to apex, apex rounded ( Fig. 71, 72 ); sipho robust, strongly curved in basal 2/3, with lateral alae at apical 1/6, basal capsule lightly sclerotized, inner arm short, wide, apex widely bifid, outer arm wider and longer than inner arm, with accessory piece, basal border shallowly emarginate ( Fig. 73, 74 ).

Female. Unknown.

Variation. Unknown.

Type material. Holotype male; Peru, Cuzco, Cashiriari (light), 4-22 jul 2005, leg. J. Williams, Coleccion J.E. Barriga, Chile 167153. ( JEBC) . Paratype; 1, Peru, Dep. Cusco, Callanga, 10-III, 17, 1953, Woytkowski ( USNM) .

Remarks. Brachiacantha hazel is a juanita group species that resembles B. blandula in dorsal coloration. Both types are males distinguished by the head with black vertex and uniquely shaped basomedian pronotal macula.

Figures

Figures 69–87. 69–74. Brachiacantha hazel. 69) Habitus. 70) Protibia. 71) Phallobase ventral. 72) Phallobase lateral. 73) Sipho. 74) Enlarged siphonal apex. 75–80. Brachiacantha armandi. 75) Habitus. 76) Phallobase ventral. 77) Phallobase lateral. 78) Sipho. 79) Enlarged siphonal apex. 80) Female genitalia. 81–87. Brachiacantha margaritae. 81) Habitus. 82) Phallobase ventral. 83) Phallobase lateral. 84) Sipho. 85) Enlarged siphonal apex lateral. 86) Enlarged siphonal apex dorsal. 87) Female genitalia.