Paratractosomus sulciventris Casari, 2013, sp. nov.
Creators: name: Casari, Sônia A.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Elateridae
Paratractosomus
Paratractosomus sulciventris

description: Paratractosomus sulciventris sp. nov.
(Figs 23–40, 45–48)
Type material. Holotype. BOLIVIA. Santa Cruz: 4Km N Bermejo 1000m, 16–21 October 2007, J. Wappes & A. Cline; Ref. Los Volcanes 18o 06’S 63o36’W (MNKM).
Paratypes. BOLIVIA. Santa Cruz: Florida 4 Km N Bermejo, 25–29 October, 2011, Wappes & Skillman; Refugio los Volcanes 18o 06’S 63o36’W, 1000–1200 m (dissected) (MZSP); 4Km N of Bermejo Ref. los Volcanes 1350 m, 8–11 December, 2011, 18 o 06’S 63o36’W, Wappes, Lingafelter, Morris & Woodley; 2012 Loan ACMT, J. Wappes 2 exs (ACMT, MNKM); Florida, 4Km N Bermejo, 29.X.2011 coll. Skillman & Wappes; Refugio los Volcanes 18o 06’S 63o36’W, 1000–1200 meters (FWFC); Florida 4 Km N Bermejo, 29.X.2011, Coll. Skillman & Wappes; Refugio los Volcanes, 18o 06’S 63o36’W, 1000–1200 meters; FWSC loan Feb. 2012 (MZSP).
Length: 12.5 mm (holotype); 10–13 mm (paratypes).
Integument very shiny (Figs 45–48). Coloration reddish-brown with head black and elytra yellowish-brown; antennae brownish; elytra marginate by reddish-brown portion. Pubescence white, long and sparse on head and ventrally (including legs); pronotum glabrous; elytra with setae only at lateral margins; antennae with goldenyellow setae, very dense and short, some very long; last ventrite more densely setose in female.
Frons (Figs 24, 45–47) wider than long; convex; concave in a small area parallel to anterior margin; anterior margin slightly rounded, strongly carinate, surpassing frontoclypeal region; punctation moderately coarse and sparse. Antenna (Figs 23, 46) reaching hind angles of pronotum in both sexes; in male surpassing hind angles of pronotum by about one antennomere; serrate with 11 antennomeres; 3rd antennomere elongate, shorter than 4th. Labrum (Fig. 34) transverse, prominent medioanteriorly; many long setae of varied sizes distributed on two anterior thirds and some short setae near base. Mandibles (Figs 36–39) robust, slightly asymmetrical; in all specimens examined distal tooth more sharpened at right mandible; raised and with longitudinal sinuous carina dorsomedially; many long laterodorsal setae; molar area well developed covered by piliform setae. Maxilla (Fig. 40): cardo constricted at apex with some long setae at basal half; basistipes elongate, subtriangular with long setae on basal two thirds; medistipes transversely emarginated at base; with longitudinal carina parallel basistipes; long setae externally carina, forming irregular longitudinal row near basistipes; tiny setae irregularly distributed on wide area at other side of carina; galea and lacinia brush-like; galea more developed with spatulate setae. Palpiger setose; palpus setose and with four palpomeres: palpomere basal short, as wide as long; two median palpomeres elongate and widened near apex; palpomere distal securiform. Labium (Fig. 35): postmentum wider than long, slightly trapezoidal with setae of varied sizes, one pair longest; prementum with long setae near middle arranged in an irregular row. Palpiger with many short setae; palpus setose with three palpomeres: palpomere basal short, almost transverse; palpomeres median and distal elongate and widened apicad.
Pronotum (Figs 24, 25, 45, 46) slightly wider than long (including hind angles), strongly narrowed anteriorly and slightly narrowed at base of hind angles, making lateral margins slightly sinuous; strongly convex; lateral carina (Figs 25, 46, 47) almost reaching anterior margin, partially visible dorsally; hind angles long, divergent and weakly carinate; punctation moderately fine, weak and sparse, more visible anteriorly. Hypomeron (Figs 25, 46, 47) with punctation moderately fine and sparse. Pronotosternal sutures (Figs 25, 47) wide and open frontally forming a well developed prosternal groove. Punctation of prosternum (Figs 46, 47) sparse, coarser than that of hypomera. Prosternal spine (Figs 25, 26, 47) flattened from between procoxae to apex; compressed laterally, widened apicad; apex irregularly emarginated forming two lobes: dorsal lobe larger and rounded and ventral lobe sharpened. Mesosternal cavity (Figs 26, 27, 47, 48) wide, U-shaped with borders moderately wide and horizontal on basal half and declivous at anterior half. Mesepisternum (Figs 27, 47, 48) not forming part of margin of mesocoxal cavity. Metasternum (Figs 47, 48) with a deep boomerang-like furrow, bordered anteriorly by carina, behind mesosternal cavity. Metacoxal plate (Figs 27, 47, 48) slightly narrowed laterally with well developed tooth at free margin. Tibial spurs present. Tarsomeres 1–3 (Figs 46–48) with well developed lamella beneath; lamellae increasing in size apically. Scutellum elongate, pentagonal and declivous anteriorly; distal margin rounded. Elytra (Figs 45, 46) smooth, wider than pronotum on basal half (except basal margin), gradually narrowed on distal half; apex narrow with tiny sutural spine; striae marked by row of rounded translucent punctures.
Male. Tergite VIII (Fig. 30) longer than wide, slightly narrowed apicad; distal margin rounded; translucent in median basal area; marginate by long setae on distal ¾. Sternite VIII (Fig. 28) wider than long, slightly narrowed apicad; distal margin emarginated at middle forming a wide rounded lobe each side; translucent with wide lateral and anterior yellowish bands (interrupted medioanteriorly) united to narrow transverse band near base; long setae near anterior and lateral margins. Sternite IX (Fig. 29) elongate, widened near middle; distal half slightly narrowed apicad; apex rounded; long setae on distal half. Tergite IX (Fig. 31) slightly wider than long, slightly narrowed apicad; densely punctate laterally; distal margin gradual and deeply emarginate at middle; long lateral setae near fore angles. Tergite X elongate, widened near middle; punctate; long setae near margins of distal half. Aedeagus (Figs 32, 33) narrow, 3.6 times longer than wide; basal piece long, 0.73 times paramere length (dorsally); parameres wider on basal third, with apex cuneiform; subapical region with setae of varied sizes dorsal and ventral; some dorsal setae very long; median lobe (excluding basal struts) 0.85 times paramere (dorsally) length; narrow, gradual- and slightly narrowed apicad; subapical region constricted.
Etymology. The specific epithet is a derivative of the Latin words sulci (=furrow) + ventris (=venter), referring to the furrow on the metasternum.
description: Published as part of Casari, Sônia A., 2013, New genera of Dicrepidiina from the Neotropical Region (Coleoptera, Elateridae, Elaterinae, Ampedini), pp. 143-156 in Zootaxa 3721 (2) on pages 148-153, DOI: 10.11646/zootaxa.3721.2.2, http://zenodo.org/record/221883