Hylotribus frontispeltastes Queiroz & Mermudes

Queiroz, Fernando Luiz Cunha Avila Villar De & Mermudes, José Ricardo M., 2014, Six new species of Hylotribus Jekel, 1860 from Brazil (Coleoptera, Anthribidae, Anthribinae, Discotenini), Zootaxa 3814 (2), pp. 242-258 : 248-250

Hylotribus frontispeltastes Queiroz & Mermudes sp. nov.

( Figs. 7–8 )

Male. Integument dark-brown to reddish, slightly blackish at rostrum apex and ventral surface of body. Dorsal vestiture ( Figs. 7–8 ) of rostrum with dense yellowish pilosity. Frons with white oblique strips, narrow V-shaped with acute angle, clothed by white dense pubescence; inner ocular margin with dense of bright brown pubescence. Antennae with yellowish-white pubescence and rare similarly colored suberect setae; club with dark-brown pubescence, moderately dense. Pronotum, at each side of anterior third, with dark spot, surrounded by dense yellowish pubescence, that divides the spots. Pronotal tubercle tufted, with bright brown setae; disk with diminutive dark spots; wide trapezoidal spot behind antebasal carinae, at middle, covered by yellowish-white pubescence; at each side, moderately developed dark spot. Scutellar shield with dark-brown pubescence, somewhat dense, anteriorly oriented. Elytra between humeri and basal tubercle with two slight strips of white pubescence. Median disk variegated, with dark diminutive spots. Humeri lighter; tubercles with bright-brown pubescence. Anteapical tubercles with dark narrow strip between them, somewhat irregular along interstria I. Apical declivity with dense yellowish-white pubescence, at interstria I with alternate dark and white spots. Ventral vestiture yellowish-white, moderately sparse; denser on legs. Femora with dark spots, one post-medial, other apical. Tibiae with two yellow ring-shaped spots.

Head retracted, posterior ocular margin of eyes reaching prothorax. Ventrally with sparse, fine punctures. Head and rostrum, dorsally strongly corrugate. Rostrum with three fine carinae, the median carina more developed at middle. Sides of rostrum with continuous carina along dorsal margin of scrobe. Antennae short, reaching anterior margin of prothorax. Scape and segment II moderately thick; II–III as long as scape; III–IV slender; III–IV decrease in length; VII–VIII, obconic and thick; club strongly robust, IX–X clearly wider than long; XI as long as IX.

Pronotum slightly wider than long, slightly projected at sides before middle; anterior margin (lateral view) strongly oblique. Pronotum with three tufted tubercles at middle line; laterals smaller than median; with diminutive, sparse granules obliterated by vestiture. Antebasal carina 2-fragmented, straight; first segment longer, reaching lateral tubercles. Prosternum weakly transversely swollen; surface punctate-corrugate. Elytra with humeri swollen and moderately prominent; callus, with distinct pubescence tufted at top; basal tubercles developed and acuminate, interstria 5 slightly costate, with discrete tubercle at middle of interstria 5; anteapical tubercles developed, with rhomboid aspect; apical declivity with two small tubercles. Metasternum at disc with length subequal to width metacoxae.

Measurements, in mm, male: TL: 3.0–3.6; RL: 0.9–1.1; RAW: 0.6–0.7; RBW: 0.4–0.5; PL: 1.0–1.3; PW: 1.0–1.5; EL: 2.0–2.3; EW: 1.4–1.9.

Type material. HOLOTYPE male from BRAZIL, São Paulo: São José do Barreiro (Serra da Bocaina, 1650 m), XI.1968, Alvarenga & Seabra col. ( MNRJ). Paratype female, same locality, I.1969, M. Alvarenga col. ( MNRJ). Minas Gerais: Caraça, 2 M, 1 F, 2nd half of 1884, P. Germain col., ex. Coll. R. Oberthür 1952 ( MNHN).

Etymology. The name is derived from the Latin, frontis = frons, plus peltates = male warrior armed with a shield. The name refers to the triangular spot on the frons.

Remarks. See discussion above for H. plaumanni .

Figures

FIGURES 7 – 8. Hylotribus frontispeltastes Queiroz & Mermudes sp. nov., holotype male: 7, dorsal; 8 lateral.