Serratitibia barclayi Gordon and Canepari, 2013

Gordon, Robert D., Canepari, Claudio & Hanley, Guy A., 2013, South American Coccinellidae (Coleoptera), Part XII: New name for Cyra Mulsant, review of Brachiacanthini genera, and systematic revision of Cleothera Mulsant, Hinda Mulsant and Serratitibia Gordon and Canepari, new genus, Insecta Mundi 2013 (278), pp. 1-150 : 100-101

81. Serratitibia barclayi Gordon and Canepari , new species

Description. Male holotype. Length 3.0 mm, width 2.3 mm; body elongate oval, convex. Dorsal surface shiny, lacking alutaceous sculpture. Color yellow; pronotum with short, narrow, black basomedial macula broadly, deeply emarginate apically, macula extended 1/5 distance to apical pronotal border; elytron black with 5 yellow spots, spots arranged in transverse rows of two each plus one at apex, scutellar spot large, triangular, extended posteriorly, narrowly connected to humeral spot along base of elytron, apical spot large, transverse ( Fig. 453 ); meso–, metaventrites dark brown; abdomen brown medially, yellow laterally. Head punctures small, separated by less than diameter, each puncture as large as 3 eye facets; pronotal punctures as large as head punctures, separated by less than 2 times diameter, elytral punctures larger than pronotal punctures, separated by 1–3 times diameter. Clypeus truncate apically, lateral margin rounded, angle abruptly rounded. Eye canthus short, about 4 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal angle broadly rounded, anterior angle abruptly rounded, lateral margin slightly curved, basal margin without bordering line. Epipleuron narrow, grooved, deeply emarginate for reception of femoral apices. Protibial flange as wide as remainder of protibia, outer margin curved, with about 8 large teeth, sponda extended beyond protibial border. Carinae on prosternal process narrowly separated at apex, parallel, joined at 1/8 distance to prosternal base, not connected to base. Metaventrite without setal tuft. Basal abdominal ventrite without median setal tuft. Abdomen without primary pores laterally between ventrites 4–5; postcoxal line on basal abdominal ventrite straight in basal 1/3, slightly flattened along posterior ventrite margin, curved forward. Abdominal ventrites with short, sparse pubescence, punctures large on basal 3 ventrites, separated by diameter or less medially, becoming smaller and dense laterally, ventrites 3–5 densely punctured throughout; 5th ventrite depressed medially in apical 1/4, apical margin broadly, weakly emarginate, lateral angle of emargination feeble, with small tubercle bearing tuft of dense setae; 6th ventrite short, narrow, weakly depressed in apical 1/2, depression glabrous, without median tubercle, apical margin widely, shallowly emarginate, angle on each side of emargination abruptly rounded, bearing small tuft of dense setae. Apical tergite short, narrow, apex weakly emarginate, surface densely, finely punctured. Genitalia with basal lobe shorter than paramere, tapered to rounded apex; paramere Unm type, widened apically, apex truncate ( Fig. 454, 455 ); sipho curved in basal 1/2, basal capsule with inner arm short, rectangular, apex truncate, outer arm 3 times as long as inner arm, with small accessory piece, basal border weakly emarginate ( Fig. 456, 457 ).

Female. Similar to male except pronotum with basomedial black area extended nearly to anterior pronotal border, elytron with yellow spots slightly smaller, sutural and humeral spots not connected along base of elytron, humeral spot small, narrow, elongate. Genitalia with spermatheca long, slender, strongly curved in apical 2/3, cornu enlarged; bursal cap with 3 arms, apical strut short, narrow ( Fig. 458 ).

Variation. Length 2.5–3.2 mm, width 1.8–2.4 mm. Female specimens have the vertex narrowly black or entirely yellow; the humeral spot variable from nearly completely absent to extended posteriorly along lateral margin and connected to mediolateral spot.

Type material. Holotype male; Bolivia, Santa Cruz, Amboro National Park, Los Volcanes , c. 1000m, S18 o 06’: W63 o 36’, 20/xi-12/xii/2004, General collecting, Mendel, H. and Barclay, M. V.L., BMNH (E)2004- 280 ( BMNH) . Paratypes; 90, same data as holotype ( BMNH) .

Remarks. Males of S. barclay i are distinguished by the large, triangular scutellar spot on the elytron connected to the humeral spot along the elytral base, and presence of short, narrow, basomedial pronotal macula. Females are similar to males but differ because the dark pronotal spot extends nearly to the anterior margin. Females have a humeral spot which is somewhat unusual in Serratitibia , and the body form is somewhat elongate.

Etymology. This species is named for Max Barclay of the BMNH, one of the collectors of this large series.

Figures

Figures 443–458. 443–447) Serratitibia beverly. 443) Habitus. 444) Phallobase ventral. 445) Phallobase lateral. 446) Sipho (lacking apex). 447) Female genitalia. 448–452) Serratitibia denise. 448) Habitus. 449) Phallobase ventral. 450) Phallobase lateral. 451) Enlarged siphonal apex. 452) Sipho. 453–458) Serratitibia barclayi. 453) Habitus. 454) Phallobase ventral. 455) Phallobase lateral. 456) Enlarged siphonal apex. 457) Sipho. 458) Female genitalia.