Pocadius jelineki Leschen and Carlton, 1994

Cline, Andrew R., 2008, Revision of the sap beetle genus Pocadius Erichson, 1843 (Coleoptera: Nitidulidae: Nitidulinae, Zootaxa 1799 (1), pp. 1-120: 77-79

publication ID

http://doi.org/ 10.11646/zootaxa.1799.1.1

persistent identifier

http://treatment.plazi.org/id/03C587F3-FFE3-FFA4-9BA1-9D047CE4FC82

treatment provided by

Felipe

scientific name

Pocadius jelineki Leschen and Carlton, 1994
status

 

Pocadius jelineki Leschen and Carlton, 1994  

(Figs. 26, 67, 110, 153, 195, 232, 266–271)

Specimens examined. HOLOTYPE ♂ ( SNEC): COSTA RICA: Puntarenas; Monte Verde , 1580m; 13 May 1989, J. Ashe; R. Brooks, R. Leschen; ex. Lycoperdon sp.   / Snow Entomol. Mus.; Costa Rica Exped. #159   / HOLOTYPE; Pocadius jelineki   ; R. Leschen & C. Carlton. 6   PARATYPES ( SNEC)   : same data labels as holotype. 2   PARATYPES ( SNEC): COSTA RICA:; Puntarenas, Monte Verde ; 1400m, 14-16-July-1989; ex. flight intercept trap; Robert E. Beer. 1   PARATYPE ( SNEC): COSTA RICA: Puntarenas; Monte Verde , 1550m; 22 May 1989, J. Ashe; R. Brooks, R. Leschen; ex. Lycoperdon   / Snow Entomol. Mus.; Costa Rica Exped. #375. 1   PARATYPE ( SNEC)   : COSTA RICA: Puntarenas; Reserva Biologica de; Monteverde, 1550m; nr. Quelorada cuecha / on Sendero rio; 13 May 1989, J. Ashe; R   . Brooks , R   . Leschen ; ex. Lycoperdon   / Snow Entomol. Mus   .; Costa Rica Exped. #160. Additionally, ( CMN, SNEC)   : Costa Rica: Punt. , Monteverde, 1400m, 21-24- VIII   , H. & A. Howden, FIT. Costa Rica: Monteverde , flight intercept, 1520m, 18-25-VI-1983, D.H. Lindeman   . Costa Rica: Punt. , Monteverde, 1400m, 18-20- VIII-   1987, H. & A. Howden, FIT. Costa Rica: Monteverde , unbaited pit traps, 3-VII-1983, D.H. Lindeman   . Costa Rica: 1520m, Monteverde , FIT, 9-13-VII- 1983, D.H. Lindeman   . Costa Rica: 1520m, Monteverde , FIT, 2-9-VII-1983, D.H. Lindeman   . Costa Rica: Punt. , Monteverde, 1400m, 15-17- VIII-   1987, H. & A. Howden. Costa Rica: Monteverde , flight intercept, 1520m, 11-18-VI-1983, D.H. Lindeman   . COSTA RICA: Guanacaste; Cacao Biological Station , 1050m; 10°55’38”N, 85°27’7”W; 10 JUL 2000; J. Ashe, R GoogleMaps   . Brooks, Z. Falin ; CR1ABF00 089; ex: in giant puffball mushroom. 5 specimens ( SNEC)   : NICARAGUA: Granada Dept.; Res. Nat. Volcan Mombacho , 1150m, 11°50.05’N 85°58.83’W; 3-VI-2002, R GoogleMaps   . Brooks, Z. Falin, S. Chatzimanolis, ex. puffball fungus; NIC1BFC02 171.

Diagnosis. In the original diagnosis ( Leschen and Carlton 1994), two characters were given to distinguish this species: the curved apices of the habitus setae and elbowed posterior ejaculatory rods. The first of these is present in other Pocadius   and the latter useful only for discerning males. Other diagnostic characters include: metepisternal axillary space narrow (0.1 length of metepisternum); antennal segments 2–3 elongate; terminal antennomere with circular depressed region, eyes comparatively large and protruding; pronotum widest near middle; metatibial spurs elongate; anal sclerite with elongate narrow lateral flanges projecting anteriorly; median lobe with complex apical opening; ovipositor with narrowed paraprocts, gonocoxal base with one lat-

eral prominence, inner gonocoxal margin angulate, gonocoxal apices lacking “tooth”, 4–5 elongate setae projecting from gonocoxal apices.

Redescription. Length 3.1 mm, Width 1.7mm, Depth 1.1mm. Body moderately convex, shining, brown to dark brown, venter lighter. Pronotum and elytra margins with elongate fimbriae. Dorsal and ventral pubescence quite long, golden.

Head surface deeply, irregularly punctate, both small and large punctures on vertex, proportionately smaller towards orbits and fronotclypeal region. Large punctures 4X diameter of eye facet, small punctures 3X diameter; interspaces smooth to finely alutaceous. Pronotal surface with large punctures equal to large ones on head, interspersed with few small punctures, 0.75 size of large ones; interspaces smooth to alutaceous, 0.5–0.75 diameters apart. Scutellar surface with few moderately impressed punctures equal to smaller ones on pronotum, interspaces smooth to alutaceous. Elytral surface with serial rows of smaller punctures equal to small ones on pronotum, serial large punctures 1.75X diameter of small ones. Small punctures giving rise to semi-erect long curved setae, large punctures giving rise to decumbent long curved setae; interspaces narrow between punctures of a row and between different rows. Within a row, small punctures separated by 1 diameter, and large punctures by 0.25–0.5 diameter. Large rows separated by 1 diameter; interspaces shining but variable from smooth to finely alutaceous. Pygidium densely punctate, punctures equal to small ones on head, interspaces narrow, 0.75–1.0 diameter, smooth to alutaceous.

Venter with shorter more sparsely distributed pubescence than dorsum. Mentum with small shallowly impressed punctures, equal to small ones on head, interspaces alutaceous. Prosternum and epimeron deeply irregularly punctate, punctures 1.5–1.75X larger than those on mentum, interspaces alutaceous with microreticulate areas, prosternal punctures separated by 0.5 diameter, those on epimeron by 0.33–0.66 diameter. Mesoventrite with shallow punctures, 0.75 diameter of those on prosternum, interspaces alutaceous to microreticulate, separated by 0.5–1 diameter, aggregated near posterior margin. Metaventrite irregularly punctate with moderate faint punctures on disc similar to those on prosternum, interspaces smooth to alutaceous on disc becoming microreticulate laterally, punctures separated by 1–2 diameters. Abdominal sternite 1 with large faint, almost obsolete punctures, punctures equal to those on mesoventrite, interspaces smooth to alutaceous, separated by 1 diameter. Hypopygidium with moderately deep punctures, similar to those on sternites 2–4, interspaces alutaceous, punctures separated by 0.25 diameter.

Head slightly wider than long (L:W = 1:1.6). Antennal club compact, obovate, distinctly asymmetrical with last antennomere much longer than previous two combined. Antennomeres 6–8 compact, 7–8 disc-like. Antennomeres 4–5 cuboid, slightly narrowed proximally Antennal scape asymmetrical, somewhat hemispherical, 1.4X as long as pedicel. Pedicel elongate cylindrical. Antennal segment 3 subequal to pedicel. Antennal club large, 0.95 length of segments 1–8 combined. Terminal antennomere with deep circular depressed region. Mentum with anterior angles apparent, anterior margin broadly hemispherical with acuminate apex, lateral margins short and perpendicular, overall pentagonal, in lateral view convex.

Pronotum widest near middle (L:W = 1:2.1), anterior margin broadly shallowly trapezoidal, lateral margins less arcuate posteriorly. Scutellum large, triangular, apex narrowly rounded. Prosternal process in lateral view with anterior and posterior ends prominent and convex medially; posterior apical wall short but prominent and slightly oblique. Mesoventrite extending to midway between mesocoxae, evenly broadly concave for reception of metaventrite. Metaventrite wider than long (W:L = 2.67:1). Metepisternum broad with two medial constrictions, oblique line dividing anterior 0.1. First abdominal sternite with broadly rounded process between metacoxae. First sternite 2X longer than sternite 2. Sternites 2–4 subequal. Hypopygidium subequal to sternite 1.

Protibia with apical tooth prominent, slightly longer than tarsomeres 1 and part of 2 combined. Outer apical notch with 100° angle, notch depth shallow, equal to tarsomere 1. Inner apical spine subequal to tarsomeres 1–2 combined. Mesotibia more heavily armed than protibia with dense stiff setae and row of slender spines along lateral edge. Outer apical process elongate and robust, larger than protibial process. Inner apical spine equal to tarsomeres 1–2 combined. Metatibia with more armature than mesotibia, including more and longer spines, apical spine equal to tarsomeres 1–2 and part of 3 combined.

Male genitalia well-sclerotized. Anal sclerite with apex fimbriate (Fig. 26). Spiculum gastrale with narrow anteriorly projecting lateral flanges, medial margins concave proximally, short stiff setae originating from apex (Fig. 67). Tegmen evenly rounded apically (Fig. 110), much longer than wide (w:l = 1:2.55), lateral row of setae visible from median fossa around apex, small shallow concavity in apical 0.33, inner row of setae complete coming together near apex. Median lobe moderately large, 0.5 length of tegmen, apex acuminate, apical opening well-developed (Fig. 153). Ejaculatory rods not fused to basal piece or each other, mostly straight and perpendicular. Basal piece visible as two distinct elbowed parts (Fig. 195).

Female genitalia moderately sclerotized. Paraprocts narrow with concave lateral margins, sclerotization along median line to gonocoxal base. Gonocoxite with one basal lateral prominence. Gonocoxal apices with recurved “tooth” absent. Four or five elongate setae originate from small depressions laterally on gonocoxal apices (Fig. 232).

Variation. Some variability in size, though not correlated to gender.

Seasonality/Habitat. Collected from May–July in mid-elevation tropical wet forests.

Distribution. Known from Costa Rica and southern Nicaragua.

Notes. Host fungi include Lycoperdon   puffballs.

R

Departamento de Geologia, Universidad de Chile

CMN

Canadian Museum of Nature

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Nitidulidae

Genus

Pocadius