Serratitibia rachel 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 : 106-107

87. Serratitibia rachel Gordon and Canepari , new species

Description. Male holotype. Length 2.7 mm, width 2.2 mm; body oval, convex. Dorsal surface shiny, lacking alutaceous sculpture except pronotum very slightly alutaceous, shiny. Color yellow; pronotum with large, black basomedial macula extended nearly 3/4 distance to anterior pronotal margin, apex of macula slightly curved, nearly truncate; elytron black with 2 spots, humeral spot small, yellow, discal spot large, elongate, oval, anterior margin emarginate on outer angle ( Fig. 486 ); prosternum, meso–, metaventrites dark brown; abdomen dark brown. Head punctures small, separated by 1–2 times diameter, each puncture as large as 2 eye facets; 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 much larger than on elytra, separated by less than diameter 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 with trace of bordering line. Epipleuron narrow, deeply grooved, deeply emarginate for reception of femoral apices. Protibia with outer margin weakly flanged, flange smooth, without serrations, 1/3 as wide as remainder of protibia, sponda extended beyond protibial border ( Fig. 487 ). 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 without median setal tuft. Abdomen with large primary pores extended under apical 1/3 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, with trace of median tubercle, apical margin shallowly emarginate, angle on each side of emargination bearing tuft of setae. Apical tergite short, narrow, apex broadly, weakly emarginate, surface densely, finely punctured. Genitalia with basal lobe as long as paramere, wide, sides weakly convergent, apex obliquely rounded; paramere Unm type, short, wide, widened apically, apex truncate ( Fig. 488, 489 ); sipho robust, strongly curved in basal 2/3, basal capsule with inner arm short, slender, narrowed medially, apex rounded, outer arm 2 times as long as inner arm, slender, with accessory piece, basal border broadly, deeply emarginate ( Fig. 490 ).

Female. Similar to male except head dark brown, clypeus reddish yellow on each side of middle, basomedial macula on pronotum extended to anterior pronotal margin, elytron without humeral spot. Genitalia with spermathecal capsule curved medially, cornu slightly enlarged; bursal cap widely oval, apical strut slender, widened and hooked at apex ( Fig. 491 ).

Variation. Length 2.5–2.7 mm, width 1.9–2.2 mm. Anterior margin of discal spot on elytron may be rounded.

Type material. Holotype male; ( Brazil), 1, ingrata, Fry. Coll. 1905.100. ( BMNH) . Paratypes; 4, Reed , Bahia, Fry Coll. 1905.100. ( BMNH) .

Remarks. The single pale spot on each elytron distinguishes this species from other Serratitibia with smooth protibiae.

Figures

Figures 474–491. 474–478) Serratitibia cheryl. 474) Habitus. 475) Phallobase ventral. 476) Phallobase lateral. 477) Enlarged siphonal apex. 478) Sipho. 479–485) Serratitibia marilyn. 479) Habitus. 480) Protibia. 481) Phallobase ventral. 482) Phallobase lateral. 483) Enlarged siphonal apex. 484) Sipho. 485) Female genitalia. 486–491) Serratitibia rachel. 486) Habitus. 487) Proleg. 488) Phallobase ventral. 489) Enlarged siphonal apex. 490) Sipho. 491) Female genitalia.