Pocadius peruensis Cline, 2008

Cline, Andrew R., 2008, Revision of the sap beetle genus Pocadius Erichson, 1843 (Coleoptera: Nitidulidae: Nitidulinae, Zootaxa 1799 (1), pp. 1-120 : 98-99

Pocadius peruensis Cline new species

(Figs. 36, 77, 120, 163, 204, 242, 263)

Specimens examined. HOLOTYPE ♂ ( SNEC) PERU: Tambopata Prov.; Madre de Dios Dpto.; 15km NE Puerto Maldonaldo Reserva; Cuzco Amazonica / 12° 33’S 69° 03’W; 220m, Plot # Z1U16; 22 June 1989, J.S. Ashe, R. A. Leschen #207; ex. flight intercept trap. 1 PARATYPE ( SNEC): PERU: Tambopata Prov. ; 15km NE Pto. Maldonaldo; 22 June 1989, 200m; J. Ashe, R. Leschen, #210; ex: Geastrum . 2 PARATYPES ( ARCC): PERU: Tambopata Prov. ; 15km NE Pto. Maldonaldo; 17 June 1989, 200m; J. Ashe, R. Leschen, #210; ex: Lycoperdonales. 1 PARATYPE ( SNEC): PERU: Tambopata Prov .; Madre de Dios Dpto.; 15km NE Puerto / Maldonaldo Reserva ; Cuzco Amazonica ; 12°33’S 69°03’W; 200m, Plot# Z2E15 / 15 June 1989; R. A. Leschen #061; ex. Flight intercept trap. 1 PARATYPE ( FSCA): PERU: Loreto Pr., nr.; jct. Rio Maranon &; Ocayali , 73.5°W 4.8°S; 6-20-VIII-1994; P. Skelley, day catch .

Diagnosis. Delimited from other Neotropical species by: anal sclerite with broad flanges directed apically; tegmen with small depression apically, inner row of setae not attaining apex, and a distinctly concave posterior margin when viewed laterally; median lobe with medial constriction; basal piece of internal sac sclerites U-shaped with small piece separating the two arms of the U; ovipositor with paraprocts acute apically, and gonocoxal extensions abutting midway down the intragonocoxal invagination.

Description. Length 4.1mm, Width 2.7mm, Depth 2.1mm. Body moderately convex, surface shining, light golden to reddish-brown, sometimes with elytral apices and lateral margin darker. Pronotum and elytra margins with elongate fimbriae. Dorsal and ventral pubescence quite long, golden.

Head surface irregularly punctate with deeply impressed small and large punctures, large ones primarily on vertex, becoming smaller towards orbits and fronotclypeal region. Large punctures 4X diameter of eye facet, small punctures 1–2X diameter; interspaces alutaceous to finely granular, moderately shining. Pronotal surface with large punctures equal to large punctures on head, interspersed with small punctures, 0.5 diameter large ones; interspaces alutaceous to finely granular and moderately shining, 0.25–0.5 diameter apart. Scutellar surface with vague shallowly impressed minute punctures equal to small ones on head, interspaces alutaceous with some microreticulation. Elytral surface with serial rows of alternating large and small deep punctures. Small punctures equal to small ones on pronotum, large punctures 2X diameter of small ones. Small punctures giving rise to erect long golden setae, large punctures giving rise to semi-erect long golden setae; interspaces narrow between punctures of a row and between rows. Within a row, small punctures separated by 1–2 puncture diameters, and large punctures by 0.25–0.5 diameter. Large rows separated by 1–1.5 diameters; interspaces somewhat shining variable from alutaceous to finely granular. Pygidium densely punctate, punctures equal to large ones on pronotum; interspaces narrow, 0.5–1 diameter apart, finely granular.

Venter with shorter sparser pubescence than dorsum. Mentum with minute shallow punctures, equal to small ones on vertex; interspaces finely granular. Prosternum and epimeron irregularly punctate with moderately impressed punctures, punctures on epimeron equal to large ones on pronotum and those on prosternum equal to 0.75 diameter of those on epimeron, interspaces granular, prosternal punctures separated by 1 diameter, those on epimeron by 0.5 diameter. Mesoventrite with few moderately impressed punctures, equal to those on epimeron, interspaces granular, separated by 1 diameter and aggregated near metasternal border. Metaventrite irregularly punctate, disc punctures similar to small ones on head; interspaces alutaceous to finely granular on disc becoming more granular laterally, punctures separated by 1–2 diameters. Abdominal sternite 1 with large faint punctures, punctures equal to large ones on pronotum, interspaces granular, separated by 1–2 diameters. Hypopygidium with moderately deep punctures, similar to those on sternites 2–4, interspaces granular, 0.25 diameter apart.

Head wider than long (W:L = 1.75:1). Antennal club compact, obovate, slightly asymmetrical with last antennomere longer than previous two combined. Antennomeres 4–8 compact, 6–8 disc-like, and 4–5 trapezoidal. Antennal scape asymmetrical, somewhat hemispherical, 1.8X as long as pedicel. Pedicel subcylindri- cal. Antennal segment 3 subequal to pedicel. Antennal club moderately large, 0.65 length of segments 1–8 combined. Raised region of mentum with anterior angles distinct, anterior margin angulate, overall pentagonal.

Pronotum widest near indistinct posterior angles (L:W = 1:1.9), anterior margin shallowly concave, lateral margins slightly arcuate anteriorly. Scutellum large, obtusely triangular, apex rounded. Prosternal process in lateral view with anterior end more prominent than posterior end and a moderate convexity medially; posterior apical wall prominent and slightly oblique. Mesoventrite extending to midway between mesocoxae, deeply concave for reception of metaventrite. Metaventrite wider than long (W:L = 3.2:1). Metepisternum with slight medial constriction, oblique line dividing anterior 0.13 into axillary space. First abdominal sternite with acuminate process between metacoxae; 2X’s longer than sternite 2. Sternites 2–3 subequal, 4 slightly larger than 2 or 3. Hypopygidium subequal to sternite 1.

Protibia with apical tooth prominent, equal to tarsomere 1. Outer apical notch present, depth equal to tarsomere 1, notch angle 75°. Inner apical spine subequal to tarsomeres 1 and part of 2 combined. Mesotibia somewhat more heavily armed than protibia with stiff setae and row of slender spines along lateral edge. Outer apical process robust, larger than protibial process. Inner apical spine equal to tarsomeres 1–2 and part of 3 combined. Metatibia with armature similar to mesotibia, but with more slender spines.

Male genitalia heavily sclerotized. Anal sclerite with apex densely fimbriate (Fig. 36). Spiculum gastrale with wide lateral flanges directed apically, medial margins perpendicular, 5–7 stiff setae originating from apex (Fig. 77). Tegmen narrowly rounded apically (Fig. 120), longer than wide (w:l = 1:3.1), lateral row of setae visible from median fossa to around apex, small circular shallow concavity in apical 0.33 with single row of inner setae not attaining apex. Median lobe large and robust with medial constriction, 0.66 length of tegmen, apex narrowly rounded, apical opening well-developed (Fig. 163). Ejaculatory rods not fused to basal piece or each other, slightly converging basally and divergent from one another apically. Basal piece of internal sac sclerite U-shaped with small piece present between arms (Fig. 204).

Female genitalia moderately sclerotized. Gonocoxite with one basal lateral prominence. Gonocoxal apices without recurved “tooth”. Two or three elongate setae originate from small depressions on apices. Gonocoxal extensions approximate midway down intragonocoxal invagination (Fig. 242).

Variation. Three paratypes have the elytral sides markedly darker than holotype specimen.

Seasonality/Habitat. Collected in June and August from lowland tropical forests.

Distribution. Known from the type localities in Peru.

Notes. Known from Lycoperdonales and Geastrum .

Etymology. Specific epithet is a derivative of the type locality, i.e. Peru.