Triplonychus cruspinosus Rosa, 2011, sp. nov.
Creators: name: Rosa, Simone Policena
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Triplonychus
Triplonychus cruspinosus

description: Triplonychus cruspinosus sp. nov.
(Figs. 1–14, 68–70, 74, 77–79, 89, 91, 95, 99, 101)
Etymology. From Latin, crus = leg; spinosus = spiny, alluding to the spinose legs of this species.
Diagnosis. Dorsal tegument evenly colored; antennae surpassing the hind angles of pronotum by two or three antennomeres (Fig. 101); pronotum wider than long with single well impressed punctation (Fig. 3); metacoxal plate triangular with posterior margin rounded (Fig. 7); legs slender, tibiae with rows of long spiniform setae on dorsal and ventral margin (Figs. 77–79).
Description. Male (Fig. 101). Body convex, densely covered with fine and short setae; setae light brown and semidecumbent to erect on dorsal surface, yellow and decumbent on ventral surface. Integument bright; head, pronotum and elytra yellow or light to dark brown, with antennae and legs yellow; ventral surface lighter than pronotum and elytra. Pronotal and elytral punctures darker than the surrounding area. A few entirely yellow specimens are probably teneral adults. Total length: 4.0–6.0 mm; elytra 2.5–2.7 times longer than prothorax; elytral base as wide as prothorax.
Head (Fig. 74). Frons concave; anterior margin carinate, rounded and produced. Frontoclypeal region steeply declivous to base of labrum and 2 times wider than long. Punctures smaller than those of pronotal disk, umbilicate, 0.5–1.0 diameter apart. Antenna (Fig. 1) surpassing the hind angles of pronotum at antennomere 8 or 9; antennomere 3 1.6–2.0 times longer than 2; 4 1.1–1.3 times longer than 3. Dorsal index of eye prominence 0.4. Labrum semielliptical, strongly punctate with short and long setae. Mandible (Fig. 2) short (only the tips superimpose each other) unidentate, evenly arcuate, with rows of small setae on mesobasal margin, a longitudinal short carina dorsally and a stouter and longer seta than the fine setae of the lateroventral margin. Maxilla (Fig. 68) with basistipe fused to medistipe (Fig. 69) with a long stout seta and a few fine short setae; galea triangular with long setae on outer angle and shorter, denser setae on inner angle. Labium (Fig. 70) with mentum trapezoidal with a few setae on posterior angles; prementum notched at anteromedian margin, lateroanterior angles rounded and produced; second labial palpomere with long spiniform setae apically; apical maxillary and labial palpomeres securiform.
Thorax. Prothorax (Figs. 3–4) about 1.2 times wider than long, lateral margins slightly rounded, carinate on the posterior 3/4. Pronotum convex, punctures on disk large 0.5–1.5 diameters apart, on anterior margin smaller 0.2– 1.0 diameter apart, on posterior margin very small 1–2 diameters apart. Pronotal hind angles flat, short, obliquely truncate; posterior margin between hind angle and median line with one or two short notches. Hypomera (Fig. 5) with punctation double; notosternal suture curved. Prosternum (Fig. 5) 1.3 times longer than wide, with punctures as large as those of pronotal disk, umbilicate, 1–3 diameters apart on the median region and 0.5–1.0 diameter apart on lateral margin. Prosternal process (Fig. 5) 2.1–2.5 times longer than coxal diameter with ventral surface of the posterior half nearly as wide as the dorsal surface and steeply sloping dorsad at apex (Fig. 4). Procoxal cavity closed. Scutellar shield (Fig. 95) pentagonal to cordiform with a short median notch on anterior margin, abruptly elevated above the level of mesoscutum (Fig. 99). Mesoventrite (Fig. 7) with posterior region inclined 45o above the level of anterior region; lateral lobes gradually and moderately narrowed apicad; mesoventral cavity widened up to anterior border of mesocoxae then abruptly convergent. Mesocoxal cavity oval, closed. Mesepisternum with a transverse carina near the anterior inner angle; anterior inner angle acute. Meso-metaventral suture weakly impressed. Metaventrite (Figs. 7, 8) with punctation double; metacoxal plate triangular with posterior margin rounded. Elytra (Fig. 91) slightly rounded or parallel-sided up to posterior 1/3 then tapering to apex; elytral striae each with 2 rows of punctures predominantly paired side by side; interstices 3, 5 and 7 more convex than 2, 4, 6 and 8 on apical region, slightly convex on anterior region; interstice 9 carinate on posterior 2/3. Legs (Figs. 77–79). Femur narrow, tibia slightly widened apicad, pilose, with rows of spiniform setae on dorsal and apical margin longer than the fine setae, tibial spurs stout about 0.5 as long as tarsomere 1; tarsomeres densely pilose with fine setae.
Abdomen (Fig. 6) rounded laterally; punctures fine, umbilicate, 0.5 diameter apart, denser on lateral margin. First ventrite 5.3–6.5 times longer on lateral border than at middle; last ventrite pentagonal. Tergite 8 (Fig. 9) evenly sclerotized, with a few long and stout setae on lateroposterior and posterior margins; anterior sclerotized border U-shaped emarginated. Sternite 8 (Fig. 10), pentagonal, evenly sclerotized, with short setae laterally and on apical region, apex narrow emarginated at middle. Sternite 9 (Fig. 11) with sides rounded tapering to apex; lateral and posterior borders sclerotized, anterior and median region translucent, apex with short and elongate setae. Tergite 9 (Fig. 12) with anterior margin sinuous, posterior lobes acute, tergite 10 (Fig. 12) semioval.
Aedeagus (Figs. 13, 14). Parameres with apex acute directed lateroventrad, without setae, articulated to penis by a transparent membrane. Penis with a ventral sclerite oval about 3.4 times longer than wide, basal struts 0.4 times as long as its total length, median region between basal struts with a triangular process; lateral margins tapering to rounded apex.
Type material. Holotype. [Brasil, Reserva Ducke, 26 Km NE Manaus, Barbosa, M.G.V.], [Plot A, malaise 1, DEZ/1995], [62], [0031799], male (INPA).
Paratypes. [Brasil, Reserva Ducke, 26 Km NE Manaus, Barbosa, M.G.V.], malaise trap, II.1995, 5 males (INPA), 2 males (MZUSP); IV.1995, 10 males (INPA), 7 males (MZUSP); V. 1995, 1 male (INPA); XI.1995, 4 males (INPA); XII.1995, 30 males (INPA), 12 males (MZUSP); I.1996, 8 males (INPA), 4 males (MZUSP). [Brasil: Amazonas, Reserva Ducke, 26 km NE Manaus, 28.II.1978, J. Arias & A. Penny], 64 males (INPA), 24 males (MZUSP). [Brasil: Amazonas, AM 0 10, Km 26, Reserva Ducke, 7.II.1978, Jorge Arias coll.] 17 males (INPA), 12 males (MZUSP); 14. II.1978, 18 males (INPA), 4 males (MZUSP); 21. II.1978, 9 males (INPA).
Ocurrence. BRAZIL. Amazonas state: Manaus.
Remarks. Hundreds of male specimens were collected with malaise trap from November to May, with peak population in February at the height of the rainy season. No females have been collected.
description: Published as part of Rosa, Simone Policena, 2011, New species of Triplonychus Candèze and Globothorax Fleutiaux from Brazil (Coleoptera, Elateridae, Cardiophorinae), pp. 1-22 in Zootaxa 2831 on pages 3-6, DOI: 10.5281/zenodo.277308