Serratitibia joan 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 : 72-73

49. Serratitibia joan Gordon and Canepari , new species

Description. Male. Length 2.7 mm, width 2.2 mm; body oval, convex. Dorsal surface shiny, without alutaceous sculpture. Color yellow; pronotum yellow except large, black basomedial macula extended 2/ 3 distance to anterior pronotal margin, apex of macula broadly, triangularly emarginate; elytron yellow, narrowly bordered with black, sutural border slightly widened on apical declivity, with 2 small, dark brown spots, humeral spot extended from base just across humeral callus, posterolateral spot at apical declivity extended inward from lateral margin 1/2 distance to suture ( Fig. 315 ); venter of head, prosternum, meso–, metaventrites black; abdomen black except ventrites 5–6 dark reddish brown. Head punctures small, separated by less than diameter, each puncture as large as 1 eye facet; pronotal punctures as large as head punctures, separated by diameter or less; elytral punctures larger than on pronotum, separated by 1–2 times diameter; metaventral punctures larger than on elytra, separated by less than 2 times diameter medially, larger laterally. Clypeus truncate apically, lateral angle abruptly rounded. Eye canthus about 6 eye facets long, straight, apically acute, 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, weakly grooved, deeply emarginate for reception of femoral apices. Protibial flange narrower than remainder of protibia, outer margin arcuate, with about 8 teeth throughout, teeth large medially, smaller in basal and apical 1/3, sponda extended beyond protibial border ( Fig. 316 ). Carinae on prosternal process narrowly separated at apex, parallel, joined at basal 1/ 4 of prosternum, connected to base by short stem. Metaventrite without setal tuft. Basal abdominal ventrite without median setal tuft. Abdomen with primary pores laterally between ventrites 4–5 small, extended under apical 1/4 of ventrite 4; postcoxal line on basal abdominal ventrite angled to posterior ventrite margin, flattened 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 weakly convergent, apex obliquely rounded, paramere Unm type, wide, widened apically, apex truncate ( Fig. 317 ); sipho robust, strongly curved in basal 2/3, basal capsule with inner arm long, slender, narrowed medially, apex truncate, outer arm slender, as long as inner arm, curved, with accessory piece, basal border broadly, deeply emarginate ( Fig. 318, 319 ).

Female. Similar to male except head with vertex and basal 1/2 of frons black, anterior border of black area triangular, pronotum with basomedial macula extended almost to anterior pronotal margin. Genitalia with spermathecal capsule long, slender, cornu enlarged; bursal cap broadly triangular, with 3 arms, apical strut long, bent at apical 1/3, apical 1/3 spatulate ( Fig. 320 ).

Variation. Length 2.4–3.0 mm, width 1.8–2.4 mm. Male basomedial pronotal macula varies from apex of macula slightly emarginate with yellow to deeply emarginate, female heads vary from almost entirely yellow to dark reddish brown with vertex black, elytron highly variable from almost entirely yellow with black border, to having suture with large, black spot in basal 1/2, humeral angle with large, rectangular black spot, posterolateral spot connected to elongate spot medially at apical declivity, and posterolateral spot sometimes narrowly connected to suture (Fig.).

Type material. Holotype male; Ecuador, Napo Prov., 2000m, 7km S. Baeza , 20-28.II.1979, H. and A. Howden ( USNM) . Paratypes; 18, 12, same data as holotype ( USNM) ; 1, Ecuador, Napo, 13 km N Baeza , 1400m, III.3.1976, J. M. Campbell ( CNC) ; 1, Columbien (Ant.), Amaga , 1100m, leg. Schneble 1964 ( CAS) ; 4, Colombia, Huila, San Augustin , 1 September 1969, D. H. Messersmith ( USNM) .

Remarks. Distinguished by the dorsal color pattern, which, although variable, is not likely to be confused with other Serratitibia species of Section I having similar patterns. From some of those it is immediately separated by lack of a median tubercle on the 6th abdominal ventrite. Serratitibia joan and S. jacqueline have essentially identical color patterns and some specimens were collected together on the same date. However, S. jacqueline lacks primary abdominal pores, thus placing it in Section II, whereas S. joan has primary abdominal pores, thus placing it in Section I.

Figures

Figures 315–331. 315–320) Serratitibia joan. 315) Habitus. 316) Proleg. 317) Phallobase ventral). 318) Enlarged siphonal apex. 319) Sipho. 320) Female genitalia. 321–325) Serratitibia ashley. 321) Habitus. 322) Phallobase ventral. 323) Phallobase lateral. 324) Enlarged siphonal apex. 325) Sipho. 326–331) Serratitibia judith. 326) Habitus. 327) Phallobase ventral. 328) Phallobase lateral. 329) Enlarged siphonal apex. 330) Sipho. 331) Female genitalia.