FIGURES 4 – 6 in A new genus and two new species of Araecerini from high elevation in the Andes with a synopsis of the tribe in South America (Coleoptera, Anthribidae, Choraginae)

FIGURES 4 – 6. Neoxenus corrugatus Mermudes sp. nov., holotype male: 4, dorsal habitus; 5, lateral habitus; 6, rostrum frontal and antennae. Scale bars: 4 – 5 = 1 mm; 6 = 100 µm

Neoxenus corrugatus Mermudes, sp. nov.

<i>Neoxenus corrugatus</i> Mermudes sp. nov. <p>(Figs 4–6)</p> <p> <b>Etymology</b>. The name <i>corrugatus</i> from latin means wrinkled, alluding to the surface sculpture of the pronotum.</p> <p> <b>Description</b>. Male. Integument blackwish-brown; antennae and legs light-brown. Labrum yellowish, with rare elongate and yellowish setae. Dorsal vestiture: rostrum and pronotum with dense, decumbent and yellowish setae, directed forwards (Figs 4–6); elytra with slightly darker, semi-erect and shorter setae than pronotum, directed backwards. Antennae with sparse and short yellowish setae; club with dense brownish setae. Ventrally with dense, decumbent and whitish setae, more sparse on ventrites. Legs with dense and very short yellowish setae.</p> <p>Rostrum feebly wider than long, subplanate; apical margin conpiscuously raised and sinuous; interscrobal distance slightly shorter than distance between inner margins of eyes; frons weakly convex.</p> <p>Antennae short (Fig. 6), not reaching the middle of prothorax; scape as long as pedicel in length, strongly narrowed at apical fifth; pedicel elongate and swollen; III feebly longer than IV, this very slightly longer than V; VI–VIII subequal; club with distinct stout antennomeres, the longest, IX-X assymetrical, feebly expanded at the inner margin, and XI rounded at apex.</p> <p>Pronotum (Figs. 4–5) slightly wider than long, feebly convex; sides of prothorax regularly convergent to apex; antebasal carina sinuous, more deeply at middle, sharply curved laterally; lateral carina vestigial. Scutellum short, quadrangular and impressed.</p> <p>Elytra evenly convex, with rows of moderately coarse punctures, and interstriae narrowed laterally.</p> <p>Ventrites subequal in length, V twice as long as IV. Pygidium subplanate, truncate at apex</p> <p>Dissection of the terminalia was omitted due the rarity of the material.</p> <p>Measurements in mm, male: TL = 1.80; RL = 0.18; RAW = 0.28; RBW = 0.28; PL = 0.55; PW = 0.76; EL = 1.14; EW = 0.83.</p> <p> <b>Type material</b>. Holotype male. Ecuador, Napo, Baeza, 13.II.1983, L. Huggert leg. (MZLU).</p> <p> <b>Remarks</b>. <i>Neoxenus corrugatus</i> Mermudes <b>sp. nov.</b> can be distinguished from all known species of <i>Neoxeus</i> by the distinctly longitudinally corrugated pronotum, with punctures strongly confluent and shallow, surface of punctures microcorrugate, and by dorsal vestiture on rostrum and pronotum with dense, decumbent and yellowish setae feebly shorter than setae on elytra, which has setae modertely sparse and semi-erect (Figs 4–5).</p>Published as part of <i>Mermudes, José Ricardo M., 2015, A new genus and two new species of Araecerini from high elevation in the Andes with a synopsis of the tribe in South America (Coleoptera, Anthribidae, Choraginae), pp. 587-593 in Zootaxa 3918 (4)</i> on page 590, DOI: 10.11646/zootaxa.3918.4.8, <a href="http://zenodo.org/record/245754">http://zenodo.org/record/245754</a&gt

Aurigeripilus andinus Mermudes, sp. nov.

<i>Aurigeripilus andinus</i> Mermudes sp. nov. <p>(Figs 1–3)</p> <p> <b>Etymology</b>. <i>Andinus</i> —refers to from the Andes.</p> <p> <b>Description</b>. Male. Integument black; antennal club and legs blackish-brown; scape and flagellum slightly lighter, brownish. Dorsum of rostrum, frons and anterior sides of prothorax with golden-yellow pubescence, decumbent, moderately long and very dense (Fig. 1–3). Pronotum with blackish-brown pilosity, moderately sparse, and with small irregular spots of brownish pilosity; median tubercle tufted with dark suberect pilosity. Elytra with brownish, moderately elongate and suberect pilosity; interstriae I with alternating spots of yellowish-pale pilosity; interstriae 3–5, after basal gibbosities with transverse yellowish vittae; on length of 3 with blackish-brown and suberect pilosity; posterior half of elytra and epipleura with small and rare yellowish-pale spots. Ventral surface, antennae and legs with whitish pilosity, denser at sides.</p> <p>Head with vertex with coarse punctures, obliterated by the vestiture.</p> <p>Pronotum with median tubercle, moderately developed and acuminate at top; central region, around median tubercle, foveolate, with coarse, deep and coalescent punctures; interstices elevated; at anterior third with confluent punctures, longitudinaly corrugated. After antebasal carina with transverse row of coarse punctures. Prosternum flatenned with sparse coarse punctures. Proepimeron shiny and with sparse and coarse punctures near posterior margin.</p> <p>Metasternum somewhat flatenned on disk, at side, with few coarse punctures. Metepisternum slightly curved anteriorly, with some coarse punctures irregularly dense in posterior half.</p> <p>Ventrites flatenned at disk, finely punctate. Ventrite I with row of coarse punctures close to anterior margin. Pygidium shiny, apparently lacking punctures.</p> <p>Dissection of the terminalia was omitted because of paucity of the material.</p> <p>Measurements in mm, male: TL = 2.02; RL = 0.20; RAW = 0.33; RBW = 0.28; PL = 0.81; PW = 0.99; EL = 1.20; EW = 1.00.</p> <p> <b>Type material</b>. Holotype male. <b>Colombia</b>: Cundinamarca, PNN [Parque Nacional Natural] Chingaza Bosque Palacio (4º 31’ N, 73° 45’ W), 2,930 m, Malaise, 17.I–4.II.2001, E. Niño leg. (M. 1258, Anthribidae), deposited at IAVH.</p> <p> <b>Remarks</b>. <i>Aurigeripilus</i> Mermudes <b>gen. nov.</b> is close to <i>Neoxenus</i> Valentine, 1999 as indicated by the presence of an antebasal carina, but differs by the following characters: 1) antebasal carina strongly angulate at middle and discreetly sinuate laterally (Fig. 1) (antebasal carina almost straight in <i>Neoxenus</i>); 2) prothorax without lateral carina (Fig. 2) (lateral carina missing in <i>Neoxenus</i>, vestigial in <i>Neoxenus corrugatus</i> Mermudes <b>sp. nov</b> – see below); 3) lacking pleural suture, with glabrous area moderately wide and opaque (suture present in <i>Neoxenus</i>); 4) pronotum with weakly prominent median tubercle and elytral basal gibbosities (Figs. 1–2) (pronotum without median tubercles in <i>Neoxenus</i>); 5) elytral gibbosities larger and higher than pronotal tubercle (attenuate in <i>Neoxenus</i>); 6) humeri tuberculate (not evident in <i>Neoxenus</i>); 7) interstriae 3 and 5 costate, with erect pilosity moderately elongate (lacking in <i>Neoxenus</i>).</p>Published as part of <i>Mermudes, José Ricardo M., 2015, A new genus and two new species of Araecerini from high elevation in the Andes with a synopsis of the tribe in South America (Coleoptera, Anthribidae, Choraginae), pp. 587-593 in Zootaxa 3918 (4)</i> on pages 588-590, DOI: 10.11646/zootaxa.3918.4.8, <a href="http://zenodo.org/record/245754">http://zenodo.org/record/245754</a&gt