Serratitibia arcualis Mulsant, 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 : 39-40

15. Serratitibia arcualis Mulsant , new combination

Cleothera arcualis Mulsant, 1853: 86 .

Hyperaspis arcualis: Korschefsky 1931: 184 ; Blackwelder 1941: 446; Iablokoff-Khnzorian 1972: 171.

Description. Male lectotype. Length 2.3 mm, width 2.7 mm; body oval, convex. Dorsal surface with head alutaceous, feebly shiny, pronotum and elytron smooth, shiny. Color yellow; pronotum with small, triangular, basomedial brown macula extended slightly more than 1/2 distance to anterior pronotal margin, apex of macula narrow, emarginate with yellow medially; elytron black with 5 yellow spots, mediolateral spot elongate oval ( Fig. 136 ); prosternum, meso–, metaventrites, and median area of abdominal ventrites 1–2 dark brown, abdominal ventrites 3–6 brownish yellow. Head punctures small, separated by diameter or less, each puncture as large as an eye facet; pronotal punctures equal in size to head punctures, separated by 1–3 times diameter; elytral punctures larger than on pronotum, separated by 1–3 times diameter; punctures on metaventrite large, separated by diameter or less medially, becoming larger, denser laterally. Clypeus weakly emarginate apically, nearly truncate, lateral angle rounded. Eye canthus short, about 4 eye facets long, angled forward, apically rounded, brown. Pronotum narrowed from base to apex, lateral margin straight, basal angle broadly rounded, anterior angle abruptly rounded, basal margin without bordering line. Epipleuron narrow, weakly grooved, deeply emarginate for reception of femoral apices. Protibia narrowly flanged, flange rounded, outer margin with about 8 small teeth, sponda raised above protibial border. Abdomen with primary pores laterally between ventrites 4–5 small, round, extended under apical 1/4 of ventrite 4; postcoxal line on basal abdominal ventrite angled to apical margin, flattened along margin, rounded to apex, ventrite with sparse, long pubescence and sparse, coarse punctures medially; ventrites 2–4 sparsely pubescent, distinctly, 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, with median tubercle, apical margin shallowly emarginate, angle on each side of emargination bearing tuft of setae. Apical tergite short, narrow, apex truncate, surface densely, finely punctured. Genitalia with basal lobe nearly as long as paramere, wide, sides weakly convergent, apex obliquely truncate; paramere Unm type, narrow, curved, weakly widened apically, apex rounded; sipho robust, curved in basal 2/3, basal capsule with inner arm short, slender, apex slightly rounded, outer arm longer and wider than inner arm, straight, with accessory piece, basal border broadly, weakly emarginate.

Female. Unknown

Variation. Unknown.

Type locality. Colombia.

Type depository. ZMMU (lectotype designated by Iablokoff-Khnzorian 1972).

Geographical distribution. Colombia.

Specimens examined. 1. Colombia. The lectotype. ( ZMMU).

Remarks. This species is extremely similar to S. bisquatuorpustulata , differing primarily by having a small, indistinct median tubercle on the male 6th abdominal ventrite. Male genitalia are so similar to those of S. bisquatuorpustulata that those of S. arcualis are not illustrated. The dorsal color pattern is also nearly identical, and both are known from Colombia. These names are possibly synonymous, but maintained as valid because of the presence of a median tubercle on the male 6th abdominal ventrite in S. arcualis .

The lectotype is the only specimen of this species observed.

Figures

Figures 123–136. 123–129) Serratitibia brenda. 123) Habitus. 124) Protibia. 125) Phallobase ventral. 126) Phallobase lateral. 127) Enlarged siphonal apex. 128) Sipho. 129) Female genitalia. 130–135) Serratitibia bisquatuorpustulata. 130) Habitus. 131) Phallobase ventral. 132) Phallobase lateral. 133) Enlarged siphonal apex. 134) Sipho. 135) Female genitalia. 136) Serratitibia arcualis. 136) Habitus.