Panopides philippinicus (Heller) Setliff, 2008

Setliff, Gregory P., 2008, Revision of the Genus Panopides Pascoe (Coleoptera: Curculionidae: Cryptorhynchinae), The Coleopterists Bulletin 62 (1), pp. 83-98 : 83-98

Panopides philippinicus (Heller) , new combination

( Figs. 6–9 ; 13 ; 26–36 )

Asytesta philippinica Heller 1914 a: 141 ; Heller 1914 b [comparison with Cyamotrox Heller 1914 b and Eudyasmus Pascoe 1885 ]

Diagnosis. The facies and male and female genitalia of this species are very similar to that of P. anticus , from which it can be distinguished by its nearly uniform brownish-black to dark grey vestiture, lacking pale maculae on the pronotum and elytra. The legs are slightly more robust and the male terminalia differ by the well developed apical arms of the spiculum gastrale. It differs from P. riedeli by its large size (6.8–9.0 mm compared to 6.2–6.4 mm), longer, more gracile legs that are curved and have a setal brush in males, more separated meso- and metacoxae, and comparatively weakly developed elytral prominence.

Redescription. Length 6.8–9.0 mm, width 3.0– 4.1 mm (n 5 20). Vestiture primarily comprised of very small, dark brown to black squamae, elongate setae originating from granules mostly dirty white to light brown, pleura, coxae, and tarsi clothed in dirty white scales, sometimes with small patch of whitish scales on anterolateral portion of elytral humeri, thin line of dirty white scales occasionally extending across basal margin of elytra. Head. Rostrum weakly arcuate, longer than pronotum, suprascrobal carinae of males produced laterally at point of antennal insertion. Antennae long and slender, funicular articles 1 + 2 longer than antennal club; club ovate. Thorax. Pronotum as broad as long, broader in large males; short, medial carina usually visible at anterior margin. Scutellum elongateelliptical, much broader than long. Elytral punctures very large and deep, interspace between punctures smaller than the diameter of puncture. Intervals moderately convex, interval 3 with longitudinal prominence starting near base and terminating at elytral declivity; prominence elevated above other intervals, narrow, not obscuring adjacent striae, with rounded apex and two rows of closely appressed, shiny granules, interval 5 also elevated slightly above adjacent intervals (best observed in caudal view). Meso- and metacoxae separated by about length of mesocoxa. Male protibia strongly to moderately curved with well developed setal brush on ventral margin comprised of paired rows of very long, black, hair-like setae as in Fig. 13 . Hind femur exceeding elytral apex by one-third its length and mesofemora distinctly exceeding elytral apices. Abdomen. Posterior margin of male tergite VII truncate, broadly emarginate medially, with 10–12 pairs of plectral tubercles arranged in 2 longitudinal rows on either side of midline ( Fig. 30 ). Female tergite VII with posterior margin rounded, plectral rows not reaching anterior or posterior margins ( Fig. 35 ). Male terminalia. Tergite VIII subquadrate, longer than broad, posterior margin truncate; sternite VIII obsolescent ( Fig. 26 ). Spiculum gastrale with apodeme shorter than aedeagal 94 apodemes; apical arms well developed, narrow, asymmetrical ( Fig. 29 ). Tegminal apodeme longer than width of tegminal ring ( Fig. 31 ). Aedeagus with apodemes more than twice as long as aedeagal body, body weakly curved, with apex rounded. Paired endophallic sclerites near base of aedeagal body. Endophallus with inverted Y-shaped apical sclerite and pair of elongate basal sclerites; basal sclerites subequal in length to aedeagal body, basal arm extremities with apices turned sharply towards midline ( Figs. 27–28 ). Female terminalia. Hemisternites subcylindrical, 3.75 times longer than styli, open and broadened towards base; styli 2.6 times long as broad, cylindrical, with apical setae distinct ( Fig. 32 ). Tergite VIII twice as long as broad, apex slightly broader than subapical region ( Fig. 34 ). Sternite VIII with apical plate spatulate, as long as apodeme ( Fig. 36 ).

Remarks. Heller (1914 a) apparently recognized the distinctiveness of this species when he ascribed it to Asytesta , noting its remote isolation from all other members of the otherwise Papuan genus. Specimens of this species from Samar Island (including the lectotype) are typically larger and have entirely dark brown to black tibiae, whereas specimens from Mt. Makiling and elsewhere in Luzon are smaller on average with the longer suberect scales on the tibiae pale whitish in color against a background of dark brown to grayish-black squamae, as on the femora. No other differences in external morphology or male or female genitalia could be found; however, variation of size and vestiture color were observed within these subpopulations. In my opinion, the observed differences are insufficient to warrant further division of these geographical races. One type specimen from Calauanga, Laguna, Luzon mentioned in the description was not found. The specimen bearing Heller’s ‘‘typus’’ label is selected here as the lectotype to ensure the stability of nomenclature.

Distribution. Philippines

Material examined. Lectotype (designated here): Oi , ‘‘ Samar Is. 500 ft. J. Whitehead /1909 23/ Typus’ ’ ( SMTD) . Other material examined: 10 Oi, 3 ♀, ‘‘ Island Samar Baker’ ’ ( USNM) ; 1 Oi, ‘‘ Island Samar Baker /21015/ Asytesta philippinica m. Det. K. M. Heller 1924’’ ( USNM) ; 1 Oi , ‘‘Island Samar Baker’ ’ ( BPBM) ; 1 Oi, ‘‘ Island Samar Baker / Philipp. Is. B.M. 1927-426’’ ( NHML) ; 1 ♀, ‘‘ Island Samar Baker / Philipp. Is. B.M. 1927-426/ Asytesta philippinica Hllr. C.F.Baker det’’ ( NHML) ; 2 Oi, Philippines Camarines Sur: Mt. Isarog , 20 km E. of Naga, 500– 600 m. 6.IV.1963; H.M. Torrevillas Light Trap Bishop ( BPBM) ; 1 ♀, ‘‘ Luzon Los Baños G. Boettcher / Asytesta sp. ’’ ( MSNG) ; 2 Oi 2 ♀, ‘‘ Mt. Makiling Laguna P.I. xi-1-1932 / F.C. Hadden Collection ( CASC) ; 1 ♀, ‘‘ Zamboanga Mindanao Baker’ ’ ( USNM) ; 1 ♀ with same label data as previous and, ‘‘1320/ Asytesta philippinica Heller’ ’ ( USNM) .

Figures

Figs. 6–9. Habitus of Panopides philippinicus. 6) male, lateral view; 7) same, dorsal view;

Figs. 12–14. Right male prothoracic leg of Panopides species, anterior view. 12) P. anticus; 13) P. philippinicus; 14) P. riedeli. Scale line 5 1.0 mm.

Figs. 26–31. Male terminalia of Panopides philippinicus. 26) tergite VIII and sternite VIII,ventral view; 27) aedeagus, lateral view, with tegmen removed; 28) aedeagus, ventral view, with tegmen removed; 29) spiculum gastrale, ventral view; 30) tergite VII, dorsal view; 31) tegmen, ventral view. Scale line 5 1.0 mm.

Figs. 32–36. Female terminalia of Panopides philippinicus. 32) hemisternites, dorsal view; 33) spermatheca, lateral view; 34) tergite VIII, dorsal view; 35) tergite VII, dorsal view; 36) sternite VIII, ventral view. Left scale line for Figs. 32–34 5 0.5 mm, and right scale line for Figs. 35–36 5 1.0 mm.