Pocadius luisalfredoi Cline

Cline, Andrew R., 2008, Revision of the sap beetle genus Pocadius Erichson, 1843 (Coleoptera: Nitidulidae: Nitidulinae, Zootaxa 1799 (1), pp. 1-120: 81-83

publication ID

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

persistent identifier

http://treatment.plazi.org/id/03C587F3-FFFF-FFB8-9BA1-9FCC7FBFFD22

treatment provided by

Felipe

scientific name

Pocadius luisalfredoi Cline
status

new species

Pocadius luisalfredoi Cline   new species

(Figs. 28, 69, 112, 155, 196, 234)

Specimens examined. HOLOTYPE ♂ (UGZM): MEXICO: México, Atlanta; Sn. J. Tepecoculco; 29-IX- 1991; Col. J.L. Navarrete #1108; ex. L. aff. compactum   / HOLOTYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 4 PARATYPES (2 UGZM; 2 ARCC): MEXICO: México; Atlanta, San Juan; Tepecoculco; 5-X-1991 / ex. Lycoperdon   ; aff. compactum   ; #1110 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 1 PARATYPE (UGZM): MEXICO: Guerrera; km. 10 carr. Teti; pac, “El Peral”; 23-VIII-1986 / Bosque Mesopilo; 2180 msnm; ex. Lycoperdon   ; #72 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 2 PARATYPES (CAS): Cerro de Garnica; Mich., Mex., VII-25-1963 / puffball / G.M. Gillogly collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 2 PARATYPES (CAS): same as previous but J.J. Gillogly collector. 5 PARATYPES (CAS): Summit bet.; Mexico and Puebla / VIII-14-1965; in puffball / L.R. Gillogly Collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 15 PARATYPES (CAS): 15mi. E. of; Zitauaro, Mex.; VIII-12-1965 / gill; fungus / L.R. Gillogly Collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 6 PARATYPES (CAS): Paracutin / July 15, 1960 / puffball / A.R. Gillogly Collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 2 PARATYPES (CAS): Paracho; Mich., Mex.; July 15, 1960 / Boletus / A.R. Gillogly Collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 31 PARATYPES (CAS): 27mi. N.; Guadalajara; Mex. VIII-65 / puffball / L.R. Gillogly Collector / L.R. Gillogly Collection / Lorin R. Gillogly; Collection; Donated To The; Calif. Academy Of Sciences; May 1990 / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004. 8 PARATYPES (6 UGZM, 2 ARCC): MEXICO: Jalapa; Zapopan, Bosque la; Primavera; Rancho Tres Rios; 20°41’1.4”N, 103°36’32.8”W; 28 August 1999 / collected by: R. Leschen & J.L. Navarette-Heredia; on Lycoperdon   ; pyriforme   / PARATYPE; Pocadius   ; luisalfredoi; A. Cline des. 2004.

Diagnosis. Similar to P. niger   , P. basalis   , and P. fulvipennis   . However, differs from these and others by: characteristic color pattern with dark pronotal stripe and large light colored region on elytra; densely deeply punctate head and pronotum with smooth surface; elongate pronotal and elytral fimbriae; disproportionately long and slender tibiae; hemispherical mentum; elytral pubescence with alternating rows of elongate decumbent apically curved setae; posterior margin of male pygidium indentate; tegmen with complete row of inner setae attaining apex; median lobe robust and globular with large apical opening; ejaculatory rods converging and with internal sac basal piece “U-shaped”; ovipositor with deep widely divergent gonocoxal appendages bearing two elongate setae in depressions next to apical tooth.

Description. Length 3.6mm, Width 1.8mm, Depth 1.2mm. Body moderately convex, shining, dark brown-black with the following lighter: legs, lateral 0.33 of pronotal margins, middle area of elytra, and transverse portions of each abdominal sternite. Pronotum and elytra margins with elongate fimbriae. Dorsal and ventral pubescence sparse but quite long, golden.

Head surface deeply, irregularly punctate, punctures large on vertex, becoming somewhat smaller towards orbits and fronotclypeal region. Large punctures 5–6X 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 numerous smaller punctures, equal to small ones on head; interspaces smooth to finely alutaceous, 1–2 diameters apart. Scutellar surface with moderately impressed punctures, interspaces smooth. Elytral surface with serial rows of small punctures equal to small ones on pronotum, serial large punctures 2– 3X diameter of small ones. Small punctures giving rise to semi-erect elongate curved setae, large punctures giving rise to semi-erect elongate curved setae; interspaces broad between punctures of a row and between different rows. Within a row, small punctures separated by 3–4 diameters, and large punctures by 1 diameter. Large rows separated by 2–3 diameters; interspaces shining but variable from smooth to finely alutaceous. Pygidium densely punctate, punctures equal to large ones on pronotum, interspaces narrow, 0.25–0.5 diameter, smooth to microreticulate.

Venter with shorter more sparsely distributed pubescence than dorsum. Mentum with few small shallow punctures, equal to small ones on head; interspaces alutaceous with finely microreticulate areas. Prosternum and epimeron shallowly irregularly punctate, punctures larger than those on mentum, interspaces alutaceous to granular with microreticulate areas, prosternal punctures separated by 2–4 diameters, those on epimeron by 1–2 diameters. Mesoventrite with shallow punctures, 1.5 diameter of those on prosternum, interspaces alutaceous to granular, separated by 1 diameter. Metaventrite irregularly punctate with faint small punctures on disc similar to those on mentum, interspaces alutaceous to finely granular on disc becoming more granular laterally, punctures separated by 2–4 diameters. Abdominal sternite 1 with large faint punctures, punctures equal to large punctures on pronotum, interspaces alutaceous to finely microreticulate, separated by 1–2 diameter. Hypopygidium with deeply impressed punctures, similar to those on sternites 2–4, interspaces smooth to granular, separated by 0.25–0.5 diameter.

Head wider than long (W:L = 1.6:1). Antennal club compact, oval, symmetrical with last antennomere subequal to previous two combined. Antennomeres 4–8 compact, with 7–8 disc-like, 5–6 trapezoidal, and 4 cuboidal. Antennal scape asymmetrical, somewhat hemispherical, 1.5X as long as pedicel. Pedicel barrelshaped. Antennal segment 3 subequal to pedicel. Antennal club large, 0.7 length of segments 1–8 combined. Mentum with anterior angles obsolete, anterior margin somewhat angulate, overall obtusely triangular, in lateral view convex.

Pronotum widest near middle (L:W = 1:1.9), anterior margin broadly trapezoidal, lateral margins less arcuate posteriorly. Scutellum large, obtusely triangular, apex rounded. Prosternal processin lateral view with anterior and posterior ends prominent and slight convexity medially; posterior apical wall not prominent, concave. Mesoventrite extending to midway between mesocoxae, evenly concave for reception of metaventrite. Metaventrite wider than long (W:L = 2.6:1). Metepisternum with slight medial constriction, oblique line dividing anterior 0.2. First abdominal sternite with acuminate process between metacoxae. First sternite 2X 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 tarsomeres 1 and part of 2 combined. Outer apical notch with 100° angle, notch depth deep, equal to tarsomere 1 and part of 2 combined. Inner apical spine subequal to tarsomere 1 and part of 2 combined. Mesotibia more heavily armed than protibia with dense 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 combined. Metatibia with armature similar to mesotibia.

Male genitalia well-sclerotized. Anal sclerite with apex densely fimbriate (Fig. 28). Spiculum gastrale with wide curved lateral flanges, medial margins concave, numerous short stiff setae originating from apex (Fig. 69). Tegmen evenly rounded apically (Fig. 112), longer than wide (w:l = 1:2.1), lateral row of setae visible from median fossa to prior to apex, large shallow concavity in apical 0.33 with inner row of setae attaining apex. Median lobe large and robust, 0.66 length of tegmen, apex rounded, apical opening well-developed (Fig. 155). Ejaculatory rods not fused to basal piece or each other, convergent. Basal piece U-shaped with inner margin of arms sinuate (Fig. 196).

Female genitalia moderately sclerotized. Paraprocts moderately large with sclerotization along median line and approximating baso-lateral angles. Gonocoxite with one basal lateral prominence. Gonocoxal apices with recurved “tooth” present. Two elongate setae originate from small depressions on gonocoxal apices (Fig. 234).

Variation. Quite variable in size, males typically smaller than females. Some individuals darker than others, and some without pronotal disc dark.

Seasonality/Habitat. Collected from July–October, in low to mid-elevation forests.

Distribution. Known from type localities in southern Mexico.

Notes. Known from fungal hosts, Lycoperdon compactum G. Cunn.   and L. pyriforme Schaeff.  

Etymology. Specific epithet honors Luis Alfredo, son of José Luis Navarette-Heredia a prominent coleopterist in Mexico.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Nitidulidae

Genus

Pocadius