Stultutragus ventriguttatus, Bezark, Antonio Santos-Silva Larry G. & Martins, Ubirajara R., 2012

Bezark, Antonio Santos-Silva Larry G. & Martins, Ubirajara R., 2012, New genera and species of Neotropical Rhinotragini (Coleoptera, Cerambycidae, Cerambycinae), Zootaxa 3571, pp. 66-80 : 74-75

Stultutragus ventriguttatus sp. nov.

( Figs 15–17 )

Diagnosis. Stultutragus ventriguttatus sp. nov. has general appearance similar to S. tippmanni sp. nov., but differs as follows (female): metasternum light with two small dark macula; light areas of elytra yellow-whitish; meso- and metafemora totally black. In S. tippmanni the metasternum is almost totally black with only a small light basal area, light areas of elytra yellower, and meso- and metafemora are bicolorous.

Etymology. Stultutragus ventriguttatus is named for the dark spots at the apex of the metasternum.

Female ( Figs 15–17 )—Integument reddish-brown; head black, except gula, that is reddish-brown; mandibles black; prothorax orange; scape, pedicel, antennomeres III–IV dark-brown; antennomeres V–VII brown; antennomeres VIII–X with basal half reddish-brown, mainly dorsally; legs dark-brown, except part of lateral and ventral surface of clavate portion of profemora, that are reddish-brown; metepisterna with a small dark macula at base; metasternum with a dark macula on each side near and in front of metacoxa; elytra black, with two large yellow-whitish bands, from epipleura to suture: the first on basal half, the second on distal third.

Dorsal surface of head moderately coarsely, abundantly punctate, except two irregular areas near clypeus, sparser along longitudinal sulcus between inferior ocular lobes; pubescence short, somewhat aligned along margin of inferior ocular lobe, almost absent along longitudinal sulcus between inferior ocular lobes, moderately longer between superior ocular lobes and prothorax. Clypeus with short, sparse setae, with one long seta on each side. Labrum with short, sparse setae on distal portion, sparse setae dorsally, with one long seta on each side. Outer surface of mandibles with short, sparse setae, mixed with two long setae. Laterally, below inferior ocular lobes, with long setae. Ventral surface laterally transversely sulcate, with sparse punctures on this region, centrally smooth; laterally with moderately short, sparse setae. Scape, pedicel, and antennomeres III–V with long, dark, thick setae. Pronotum with short, sparse setae, mixed with long setae; basal depression pubescent. Basal half of prosternum very short pubescent; distal half, shining, glabrous and shallowly punctate. Elytra with short, moderately sparse setae, mixed with long setae on base. Metasternum and metepisterna pubescent, mixed with long setae (center of metasternum not pubescent, but with long, sparse setae). Ventrites with short, sparse setae. Pronotal punctation moderately coarse, very abundant. Elytra coarsely, abundantly punctate.

Length of area between base of inferior ocular lobe and apex of labrum equal to length of one inferior ocular lobe in frontal view. Distance between inferior ocular lobes equal to 0.6 times length of one lobe in frontal view. Antennae as long as elytra; antennomeres filiform, slightly widest at apex, mainly VII–X; antennal club not well marked.

Elytra reach middle of abdominal segment V, slightly dehiscent at sutural fourth; elytral apex obliquely truncate, with angles projected. Apex of metafemora reaches elytral apex. Metatarsomere I about 1.4 times longer than II–III together.

Dimensions in mm (holotype female). Total length (from mandibular apex to abdominal apex), 7.9; prothorax: length, 1.5; anterior width, 1.1; posterior width, 1.2; humeral width, 1.4; elytral length, 4.9. Type material. Holotype male, from BRAZIL, Minas Gerais: Catas Altas (Serra do Caraça, XII.5.1972, Expedition of Museum of Zoology col. (MZSP).

Key. Stultutragus ventriguttatus can be included in the alternative of couplet “2,” from Bezark et al. (2011):

2(1). Hind legs totally dark............................................................................. 2a / 2b 2a. Pronotum with dark maculae; base of elytra pale; apex of elytra with distinct.... spine at outer angle. Brazil (Bahia, Espírito Santo)........................................................................ S. bifasciatus (Zajciw, 1965) 2b. Pronotum without dark maculae; base of elytra black; apex of elytra slightly projected. Brazil (Minas Gerais)............................................................................................. S. ventriguttatus sp. nov. Hind legs not totally dark............................................................................... 3

Figures

FIGURES 10 – 19. 10, Thomasella igniventris, male, ventral. 11, Ischasioides giesberti sp. nov., holotype female, dorsal. 12 – 14, Stultutragus tippmanni sp. nov., holotype male: 12, dorsal; 13, lateral; 14, ventral. 15 – 17, Stultutragus ventriguttatus sp. nov., holotype female: 15, dorsal; 16, ventral; 17, lateral. 18, Stultutragus romani, sytntypes, dorsal. 19, Oxylymma durantoni, male, basal antennomeres and pronotum (photo by Jean-Louis Giuglaris).