Serratitibia cynthia 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 : 87-88

66. Serratitibia cynthia Gordon and Canepari , new species

Description. Male holotype. Length 2.0 mm, width 1.6 mm; body oval, convex. Dorsal surface shiny, lacking alutaceous sculpture. Color black; head yellow; pronotum yellow with large, mediobasal black macula extended 2/3 distance to anterior pronotal margin, anterior border of macula broadly, weakly indented with yellow; elytron with small, yellow humeral spot, and elongate oval, reddish yellow spot medially on apical declivity ( Fig. 375 ); venter of head, prosternum, mesoventrite brownish yellow, metaventrite black; abdomen yellowish brown. Head punctures small, separated by 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 larger than on pronotum, separated by less than 2 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 5 eye facets long, angled forward, apically rounded, yellow. Pronotum narrowed from base to apex, basal angle broadly rounded, anterior angle abruptly rounded, lateral margin slightly rounded, basal margin without trace of bordering line. Epipleuron narrow, deeply grooved, deeply emarginate for reception of femoral apices. Protibial flange as wide as remainder of protibia, outer margin weakly arcuate, with about 4 small, indistinct teeth medially, sponda extended beyond protibial border. Carinae on prosternal process narrowly separated at apex, convergent, joined at prosternal base, forming triangle. Metaventrite without setal tuft. Basal abdominal ventrite without setal tuft. Abdomen without primary pores laterally between ventrites 4–5; postcoxal line on basal abdominal ventrite angled to posterior ventrite margin, flattened along margin, apex slightly extended forward. Abdominal ventrites 1–4 with short, sparse pubescence, punctures on basal 3 ventrites large separated by less than 2 times diameter medially, 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 pronounced with small tubercle bearing tuft of dense setae; 6th ventrite narrow, deeply depressed medially, depression glabrous, with small median tubercle, apical margin shallowly emarginate, angle on each side of emargination rounded, bearing tuft of setae. Apical tergite short, narrow, apex barely perceptibly emarginate medially, surface densely, finely punctured. Genitalia with basal lobe slightly more than 1/2 length of paramere, sides weakly convergent, medially “pinched,” apex obliquely rounded; paramere Unm type, wide, apex rounded ( Fig. 376, 377 ); sipho robust, curved in basal 2/3, basal capsule with inner arm long, slender, apically truncate, outer arm wider than and same length as inner arm, with accessory piece, basal border, deeply emarginate ( Fig. 378, 379 ).

Female. Similar to male except pronotum with mediobasal macula extended almost to anterior pronotal margin, not indented with yellow medially, elytron without humeral spot. Genitalia with spermathecal capsule long, slender, curved medially, cornu not widened; bursal cap with 3 arms, outer arms distinct, inner arm weakly evident, cap broadly oval, apical strut elongate, slender, strongly spatulate at apex ( Fig. 380 ).

Variation. Length 2.0– 2.6 mm, width 1.6–2.0 mm. Spot on elytron varies slightly with almost every specimen, from nearly round to distinctly elongate oval.

Type material. Holotype male; Brazil, Manaus , AM (Amazonas), INPA / Smithsonian fst, 2 o 25’S 5 o 50’W, R. K.Didham, ll.1994, Canopy Fog, Fs Edge transect, 210 metres1/51, BMNH (E) 2003-84 ( BMNH) . Paratypes; 9, 1, same data as holotype ( BMNH) ; 2, Brazil, Am. , reserva Ducke , 16km NE Manaus, Hurtado , J.C.G., Coryphophora alta, 01.iv.1966, Tree No 108a, Tray No. 7, BMNH (E) 2003-84 ( BMNH) ; 5, Brazil, Am. , Reserva Ducke , 26km NE Manaus, Barbosa , M.G. V., Plot C, Malaise 2, March, October, November 1995, BMNH (E) 2003-84 ( BMNH) ; 1, Rio Cauaburi , 9.XII.1962, J. Bechyné col. ( DZUP) .

Remarks. One of the few immediately recognizable species of this genus, S. cynthia is distinct among Serratitibia without primary abdominal pores by the single reddish yellow spot on each elytron.

Figures

Figures 363–380. 363–368) Serratitibia mary. 363) Habitus. 364) Phallobase ventral. 365) Phallobase lateral. 366) Enlarged siphonal apex. 367) Sipho. 368) Female genitalia. 369–374) Serratitibia patricia. 369) Habitus. 370) Phallobase ventral. 371) Phallobase lateral. 372) Enlarged siphonal apex. 373) Sipho. 374) Female genitalia. 375–380) Serratitibia cynthia. 375) Habitus. 376) Phallobase ventral. 377) Phallobase lateral. 378) Enlarged siphonal apex. 379) Sipho. 380) Female genitalia.