Hylotribus sublimis 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 : 245-247

Hylotribus sublimis Queiroz & Mermudes sp. nov.

( Figs. 3–4 ; 24–36)

Male. Integument blackish-brown; antennae and legs reddish-brown. Apex of tibiae and tarsi light-brown. Dorsal vestiture ( Figs. 3–4 ): rostrum with whitish short sparse pubescence; frons, at each side, with narrow strip on ocular margin of dense and yellowish pubescence intermingled with blackish-brown spots. Vertex and frons with narrow light longitudinal strip. Antennae with sparse whitish pilosity; apex of antennal segments with rare elongate white setae; antennal club with brownish pilosity. Pronotum with short sparse whitish pilosity; at each side of anterior third, with irregular dark spot; with three tubercles tufted by blackish-brown setae; median tubercle with narrow longitudinal light vitta formed by yellowish-white pilosity posteriorly, reaching the middle of posterior declivity; with rectangular vitta, formed by yellowish pilosity. Scutellar shield with elongate, suberect sparse brownish setae, anteriorly oriented. Elytra with moderately dense white pilosity at side and dorsal median; basal third of each elytron and interstriae 1 and 2, at least beyond middle with dense yellowish-brown pilosity; sutural interstria with blackish-brown spot; between ante-apical tubercles with wide blackish transverse strip, reaching to interstriae 1 and 2. Ventral vestiture with sparse yellowish-white pilosity, denser on mesepimerum and metepisternum. Apical two thirds of femora with dark spot, other on basal third of tibae. Femora with yellowish pilosity on ventral basal third, sides of base with dark spot and brownish pilosity that reaches trochanter. Tibiae with two narrow, shining yellowish spots, not ring like.

Head strongly microsculptured; transversally impressed on frons. Head and rostrum coarsely punctate; punctures deep and coalescent. Dorsum of rostrum lacking carina or depressions. Ventral region depressed with narrow high longitudinal carina; strongly depressed near maxillary sinus.

Antennae short, exceeding anterior margin of prothorax by length of club; segment II thick and slightly longer than scape; III as long as IV–V together; those subequal in length; VI–VIII short and thick; club robust, with wide segments; IX feebly longer than wide, subequal to XI; X wider than long; XI as long as basal width.

Pronotum slightly longer than wide, punctate-corrugate, partially obliterated by vestiture; with three tubercles – one central, more developed, other at each side of disk, smaller. Antebasal carina 2-fragmented, strongly swollen at middle, sinuous and elongate, interrupted at sides by interval longer than lateral portion; strongly prominent. Prosternum subconvex, with coarse coalescent punctures. Mesosternal process narrow, as wide as third of mesocoxal cavity; sides converging, apex truncate. Metasternum subconvex and transverse. Scutellar shield subcircular. Elytra with humeral callus at interstria 7, continually prominent, costate. Interstria 5 with two diminutive tubercles, one at middle line, other post-median. After apical declivity with two median size tubercles, one at interstria 6, above the ante-apical tubercle, other at interstria 7.

Ventrites I–IV narrowed and subequal in length. Intercoxal process weakly carinate. Ventrite V two times longer than IV, flattened at middle. Pygidium and ventrite V subtruncate at apex, both with small sparse granules.

Terminalia. Tergite VIII ( Fig. 24 ) slightly longer than wide, largely membranous at middle, subparallel at sides, and rounded at apex. Sternite VIII ( Fig. 24 ) strongly transverse, at least three times wide as long, apical margin emarginate forming large lateral lobes, apodeme absent. Sternite IX ( Fig. 25–26 ) three times as long as arms, apex flattened laterally ( Fig.25 ). Tegmen ( Figs. 27–28 ) damaged, with apodeme subequal to sclerotized ring, slightly emarginated before apex; parameres fused, elongate and narrow to apex, this rounded, punctate at sides.

Penis ( Figs. 29–30 ) with evanescent bridge between apodemes; tectum ( Fig. 29 ) two times longer than wide at sides, strongly acuminate to apex; pedon ( Fig. 30 ) strongly curved at apical half, acuminate at apical third. Internal sac ( Fig. 30 ) as long as penis, spiculate at proximal half, spiculate after the middle and folded dorsally; with four pigmented areas, two apical and subtriangular, two after dorsal fold, narrow and curved ( Fig. 29 ).

Female. Ventrite V at least three times longer than IV, well developed and subconvex. Terminalia. Ventrite VIII ( Fig. 31 ) as long as wide, subparallel at sides, with setae on apex, sternite VIII ( Fig. 32–33 ) as long as apodeme, acuminate on apodeme, with setae at sides and apex. Ovipositor ( Figs. 34–36 ) body distinct from lateral rods; lateral rods two times as long as body, median rods slender, reaching middle of lateral rods, acuminate at apex; toothed plate with four teeth, three developed, one distal, dorsolateral, subdivided, other ventral medially; one ventral and proximal; medial rods half size of ovipositor, medial ventral lobe bilobate. Stylus inserted proximally in tooth plate.

Measurements, in mm, male/female: TL: 4.1–4.2/4.8–5.0; RL: 1.1–1.3/1.4–1.5; RAW:0.6/ 0.7; RBW: 0.4/ 0.4–0.5; PL: 1.3–1.4/1.6–1.7; PW: 1.4–1.6/ 1.6–1.9; EL: 2.8/3.2–3.3; EW: 1.9–2.0/2.0–2.4.

Type material. HOLOTYPE male from BRAZIL, São Paulo: Campos do Jordão (1600 m), 25–31.I. [1]959, Lopes & Izecksohn col. ( MNRJ). Paratypes: 1 female 01.XI.1915 - 11.515 (dissected); 1 female, 25.XI.1915, 11.516; 1 male 30.X.1914 - 11.517 (dissected), ex-coll. Zikan ( FIOC).

Etymology.The name sublimis from Latin means uplifted, exalted, lofty, distinguished.

Remarks. Hylotribus sublimis ( Figs. 3–4 ) is somewhat similar to H. gauchus ( Figs. 9–10 ) by pronotum with longitudinal, narrow and light strip, formed by yellowish-white pubescence extending from the median tubercle; however, in H. sublimis this strip reaches the middle of the posterior declivity of the pronotum and in H. gauchus it reaches the posterior margin of the prothorax. Also, H. sublimis lacks a carina on the dorsum of the rostrum and has three evident pronotal tubercles. In H. gauchus the dorsum of the rostrum has a marked medial carina and the pronotum only has the medial tubercle developed, with attenuate lateral ones. Hylotribus sublimis differs even more from other species by the vestiture pattern of the elytra (see description above); by the head and frons strongly impressed transversally, and the prothorax with antebasal carina 2-fragmented, strongly prominent at middle, sinuous and elongate; interrupted at sides by interval longer than lateral portion and strongly developed.

Figures

FIGURES 3 – 4. Hylotribus sublimis Queiroz & Mermudes sp. nov., holotype male: 3, dorsal; 4, lateral.

FIGURES 24 – 28. Hylotribus sublimis Queiroz & Mermudes sp. nov.: 24, tergite and sternite VIII, 25 – 26, tergite IX, 25, dorsal; 26, lateral; 27 – 28, tegmen, 27, dorsal; 28, lateral.

FIGURES 29 – 30. Hylotribus sublimis Queiroz & Mermudes sp. nov.: 29 – 30, aedeagus, 29, dorsal with tectum detail; 30, lateral with pedon and internal sac details.

FIGURES 31 – 33. Hylotribus sublimis Queiroz & Mermudes sp. nov.: 31 – 33, female segment VIII, 31, dorsal, 32, lateral, 33, ventral.

FIGURES 34 – 36. Hylotribus sublimis Queiroz & Mermudes sp. nov.: 34, dorsal; 35, lateral; 36, ventral.

FIGURES 9 – 10. Hylotribus gauchus Queiroz & Mermudes sp. nov., holotype male: 9, dorsal; 10 lateral.