Serratitibia anna 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 : 40-41

16. Serratitibia anna Gordon and Canepari , new species

Description. Male holotype. Length 3.4 mm, width 2.8 mm; body broadly oval, convex. Dorsal surface shiny, lacking alutaceous sculpture except pronotum feebly alutaceous. Color yellow; clypeus black; pronotum with short, narrow, black basomedial macula with anterior border sinuate, and 2 brown, comma shaped spots on disc; elytron black with 4 large, yellow spots occupying nearly all of elytron, humeral and mediolateral spots broadly joined ( Fig. 137 ); venter with head, prosternum, meso–, metaventrites black; abdomen dark brown. Head punctures small, separated by less than diameter, each puncture as large as 1 eye facet; pronotal punctures equal in size to head punctures, separated by less than 2 times diameter; elytral punctures as large as on pronotum, separated by 1–3 times diameter; metaventral punctures larger than on elytra, separated by diameter or less medially, larger laterally. Clypeus weakly emarginate apically, lateral angle abruptly rounded. Eye canthus about 6 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 rounded, basal margin without trace of bordering line. Epipleuron wide, weakly grooved, deeply emarginate for reception of femoral apices. Protibial flange wider than remainder of protibia, outer margin arcuate, with about 8 small teeth from base to apex, sponda extended beyond protibial border ( Fig. 138 ). Carinae on prosternal process widely separated at apex, parallel, extended to basal 1/4 of prosternum, not joined basally. Metaventrite without setal tuft. Basal abdominal ventrite with median setal tuft. Abdomen with primary pores laterally between ventrites 4–5 large, extended under apical 1/3 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 small, separated by less than 2 times diameter, 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 truncate, surface densely, finely punctured. Genitalia with basal lobe 3/4 as long as paramere, narrow, sides weakly convergent, apex obliquely rounded; paramere Unm type, narrow, weakly widened apically, apex rounded ( Fig. 139, 140 ); sipho robust, curved in basal 2/3, basal capsule with inner arm large, wide, apex slightly emarginate, outer arm shorter than inner arm, wide, tapered to apex, with accessory piece, basal border broadly, weakly emarginate ( Fig. 141, 142 ).

Female. Similar to male except head black, pronotum with apex of basomedial macula slender, medially extended over 1/2 distance to apical pronotal margin, apex narrow, apical indentation narrow, V-shaped. Genitalia with spermathecal capsule long, slender, not widened apically, curved medially, bursal cap widely rounded; with 3 arms, inner arm faint, apical strut long, widened from base to spatulate apex (143).

Variation. Length 3.4–3.5 mm, width 2.7–2.8 mm. Elytron often with dark borders of yellow spots disintegrated into scattered, irregularly elongate spot, protibial flange often with outer teeth worn down to short, dull undulations, appearing to lack teeth altogether.

Type material. Holotype male; Ecuador, Napo Prov., 2000m, 7km S. Baeza. 20-28.II.1979, H. and A. Howden ( USNM) . Paratypes; 6, 2, same data as holotype ( USNM) ; 2, Ecuador, Napo Prov., 30km S. Baeza, 2000m, 20, 23.II.1979, H. and A. Howden ( USNM) ; 1, Ecuador, Napo, Misahualli , 1 o 02’S 77 o 40’W, X-27 to X-29 2002, E. M. Fisher ( CSCA) ; 1, ( Ecuador) “archidona” ( BMNH) .

Remarks. Serratitibia anna is a large, distinctive species with large elytral spots often partially coalesced because of disintegration of the dividing lines. The protibial teeth have a tendency to wear down so that the protibial flange appears smooth, or nearly so. These specimens could easily be mistaken for a species of Dilatitibialis .

Figures

Figures 137–154. 137–143) Serratitibia anna. 137) Habitus. 138) Protibia. 139) Phallobase ventral. 140) Phallobase lateral. 141) Enlarged siphonal apex. 142) Sipho. 143) Female genitalia. 144–148) Serratitibia rebecca. 144) Habitus. 145) Phallobase ventral. 146) Phallobase lateral. 147) Enlarged siphonal apex. 148) Enlarged siphonal apex. 149–154) Serratitibia tortuosa. 149) Habitus. 150) Phallobase ventral. 151) Phallobase lateral. 152) Enlarged siphonal apex. 153) Sipho. 154) Female genitalia.