Serratitibia ruby 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 : 91

70. Serratitibia ruby Gordon and Canepari , new species

Description. Male holotype. Length 2.5 mm, width 2.0 mm; body rounded, convex. Dorsal surface with head faintly alutaceous, shiny, pronotum and elytron without alutaceous sculpture, shiny. Color yellow; pronotum with black, basomedial macula wide basally, extended anteriorly 2/3 distance to pronotal apex at middle, apex shallowly emarginate with yellow; elytron black with 5 small, yellow spots arranged in transverse rows of two each plus one at apex, apical spot wide, transverse, comma shaped, anterior margin deeply emarginate ( Fig. 396 ); prosternum, meso–, metaventrites brown; abdomen yellow except median area of basal ventrite yellowish brown. 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 diameter or less; elytral punctures equal in size to pronotal punctures, separated by less than about diameter. Clypeus weakly emarginate apically, nearly truncate, lateral margin rounded, angle abruptly rounded. Eye canthus about 6 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal angle broadly rounded, anterior angle abruptly rounded, lateral margin curved, basal margin without bordering line. Epipleuron narrow, weakly grooved, deeply emarginate for reception of femoral apices. Protibial flange narrower than remainder of protibia, outer margin straight with about 4 minute teeth, sponda extended beyond protibial border. Carinae on prosternal process widely separated at apex, nearly parallel, joined before prosternal 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 arcuate throughout, apex extended forward. Abdominal ventrites with short, sparse pubescence, punctures on basal 2 ventrites separated by about diameter medially, becoming smaller and dense laterally, ventrites 3–5 densely punctured throughout; 5th ventrite depressed medially in apical 1/2, apical margin weakly emarginate medially, lateral angle of emargination pronounced 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 arcuate, surface densely, finely punctured. Genitalia with basal lobe shorter than paramere, tapered to rounded apex; paramere Unm type, widened apically, apex slightly rounded ( Fig. 397, 398 ); sipho robust, curved in basal 1/2, basal capsule with inner arm elongate, apex truncate, outer arm 2 times as long as inner arm, with accessory piece, basal border weakly emarginate ( Fig. 399, 400 ).

Female. Similar to male except head brownish yellow, pronotum with median black area large, truncate, reaching anterior pronotal margin, elytron lacking yellow humeral spot. Genitalia with spermatheca long, slender, weakly curved, cornu slightly enlarged; bursal cap with 2 outer arms, apical strut narrow, flat in lateral view ( Fig. 401 ).

Variation. Length 2.2–2.6 mm, width 1.8–2.0 mm. The protibiae have small teeth on the outer margin, some paratypes have these teeth worn enough so they are not readily visible.

Type material. Holotype male; Bolivia, Mapiri ( ZMHB) . Paratypes; 5, 3, same data as holotype ( ZMHB) ; 1, Bolivia, St. Antonio ( ZMHB) ; 1, Bolivia, Coroico ( CAS) .

Remarks. Serratitibia ruby has the common five spotted color pattern characteristic of many Serratitibia species, but the comma shaped apical spot is unique among species lacking primary abdominal pores, and elytral punctures are noticeably more dense than in other species.

Figures

Figures 396–410. 396–401) Serratitibia ruby. 396) Habitus. 397) Phallobase ventral. 398) Phallobase lateral. 399) Enlarged siphonal apex. 400) Sipho. 401) Female genitalia. 402–406) Serratitibia helen. 402) Habitus. 403) Phallobase ventral. 404) Phallobase lateral. 405) Enlarged siphonal apex. 406) Sipho. 407–410) Serratitibia susan. 407) Habitus. 408) Phallobase ventral and lateral. 409) Sipho and enlarged siphonal apex. 410) Female genitalia.