Serratitibia amanda 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 : 57-58

33. Serratitibia amanda Gordon and Canepari , new species

Description. Male holotype. Length 2.5 mm, width 2.0 mm; body oval, convex. Dorsal surface shiny, lacking alutaceous sculpture except pronotum feebly shiny, alutaceous. Color yellow; pronotum with large, black basomedial macula extended 2/3 distance to anterior pronotal margin, apex of macula deeply emarginate with yellow; elytron black with 5 yellow spots arranged in rows of 2 each plus apical spot, mediolateral spot irregularly rectangular, projected inward, apical spot transversely rectangular, apical border emarginate ( Fig. 231 ); venter of head, prosternum, meso–, metaventrites dark brown; abdomen yellow. Head punctures small, separated by less than diameter, each puncture as large as 1 eye facet; pronotal punctures smaller than head punctures, separated by 1–3 times diameter; elytral punctures larger than on pronotum, separated by 1–3 times diameter; metaventral punctures larger than on elytra, separated by less than diameter medially, larger laterally. Clypeus weakly emarginate apically, lateral angle abruptly rounded. Eye canthus about 5 eye facets long, slightly angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal angle broadly rounded, anterior angle abruptly rounded, lateral margin straight, basal margin without trace of bordering line. Epipleuron narrow, shallowly grooved, deeply emarginate for reception of femoral apices. Protibial flange as wide as remainder of protibia, outer margin slightly sinuate, with about 8 small teeth throughout, sponda extended beyond protibial border. Carinae on prosternal process widely separated at apex, convergent, joined at basal 1/4 of prosternum, connected to base by short stem. Metaventrite without setal tuft. Basal abdominal ventrite with median setal tuft. Abdomen with primary pores laterally between ventrites 4–5 small, extended under apical 1/8 of ventrite 4; postcoxal line on basal abdominal ventrite angled to posterior ventrite margin, rounded along margin, apex extended forward. Abdominal ventrites 1–4 with short, sparse pubescence, punctures on basal 3 ventrites large medially, separated by diameter or less, becoming smaller and dense laterally, ventrites 3–5 densely punctured throughout; 5th ventrite depressed medially in apical 1/2, apical border weakly emarginate medially, lateral angle of emargination with small tubercle bearing tuft of dense setae; 6th ventrite narrow, deeply depressed medially, depression glabrous, without median tubercle, apical margin shallowly emarginate, angle on each side of emargination bearing tuft of setae. Apical tergite short, narrow, apex rounded, surface densely, finely punctured. Genitalia with basal lobe 3/4 length of paramere, sides convergent, apex obliquely truncate; paramere Unm type, wide, moderately widened apically, apex truncate ( Fig. 232, 233 ); sipho robust, curved in basal 2/3, basal capsule with inner arm elongate, slender, widened at truncate apex, outer arm longer than inner arm, slender, with accessory piece, basal border broadly, shallowly emarginate.

Female. Similar to male except head with black vertex, basomedial black macula on pronotum large, extended to anterior pronotal margin, with elongate, narrow, median yellow vitta in apical 1/2, elytron with humeral spot. Genitalia with spermathecal capsule long, curved medially, cornu slightly enlarged; bursal cap broadly triangular, with 3 arms, inner arm faint, apical strut short, widened from base to spatulate apex ( Fig. 234 ).

Variation. Length 2.5–2.7 mm, width 1.9–2.0 mm.

Type material. Holotype male; Bolivia, Chaco , Staudin (Staudinger) ( ZMHB) . Paratypes; 2, same data as holotype ( ZMHB) .

Other specimen. 1. Bolivia, Chaco, Cleothera 10-signata. ( ZMHB).

Remarks. The inwardly projecting, irregularly rounded, mediolateral elytral spot, apical abdominal tergite with apical border rounded, 6th abdominal ventrite lacking a median tubercle, and female with humeral spot on the elytron aid in distinguishing S. amanda from other Bolivian species of this group.

Figures

Figures 221–234. 221–225) Serratitibia martha. 221) Habitus. 222) Phallobase ventral. 223) Enlarged siphonal apex. 224) Sipho. 225) Female genitalia. 226–230) Serratitibia debra. 226) Habitus. 227) Phallobase ventral. 228) Phallobase lateral. 229) Enlarged siphonal apex. 230) Sipho. 231–234) Serratitibia amanda. 231) Habitus. 232) Phallobase lateral. 233) Phallobase ventral. 234) Female genitalia.