A Review of the Species ofPhileurusLatreille (Coleoptera: Scarabaeidae: Dynastinae: Phileurini) with Quadridentate Protibiae and Description of a New Species from Panama Ratcliffe, Brett C. The Coleopterists Bulletin 2011 2011-06-30 65 2 125 129 Ratcliffe Ratcliffe 2011 [743,1025,1065,1087] Insecta Dynastidae Phileurus Animalia Coleoptera 2 127 Arthropoda species zonianis sp. nov.   Ty p e M a t e r i a l. H o l o t y p e m a l e l a b e l e d “ PANAMA: Canal Zone, Barro Colorado Isl.,  V-1976, H. Wolda” and with my red holotypelabel. Allotypefemale with same data and my red allotypelabel. Onemale paratypelabeled “ PANAMA- Canal Zone, Barro Colorado Island,  2 June 1956, Carl W. and Marian E. Rettenmeyer, No.”. Twomale paratypeslabeled “ PANAMA: Colón Prov., Ft. Sherman, Pavon Hill,  VI-3-1995, at light, B. Ratcliffeand M. Jameson”. Onefemale paratypelabeled “ PANAMAC. Z., Barro Colorado I.,  16-27-I-1985, H. Wolda, L. T., at ground level”. One female paratypelabeled “ BARRO COLORADOC. Z., Lights: Weir/SM-I. III,  24-III-1977, Coll. H. Wolda”. One female paratypelabeled “Panama, Barro Colo.  Aug. 31, 1965, Col. H. Voris”. All paratypeswith my yellow paratypelabel.   Fig. 8.Distribution of  Phileurus zonianis.   Fig. 9.  Phileurus zonianis, holotype.   Holotypeand allotypedeposited at the Universityof Nebraska State Museum( Lincoln, NE).  Paratypesdeposited at the U. S.National Collection ( Washington, D. C.), Ron McPeak collection ( Battleground, WA), and Brett C. Ratcliffecollection ( Lincoln, NE).    Holotype.Male.Length 18.1 mm, width 13.0 mm. Color black. Head: Hollow of vertex deep, smooth inside. Frons rugose. Short horn present on each side of head; horn conical, stout, erect. Clypeus triangular, apex acute and sharply reflexed, surface transversely rugopunctate; clypeal carina extending from clypeal apex to base of each tubercle absent. Interocular width equals 3.3 transverse eye diameters; antenna with 10 segments, club a little longer than segments 2–7. Mandibles narrow, arcuate on lateral edge, apex subacute. Pronotum: Median, longitudinal furrow narrow, deep, extending from near base to just past middle where it joins small, transverse fovea. Furrow with moderately large punctures, fovea with transverse rugae. Strong tubercle present immediately behind anterior margin. Disc either side of furrow moderately densely punctate, punctures moderately large, becoming slightly denser along lateral margins; anterior angles with large, transverse, mostly confluent punctures. Base with complete marginal bead. Elytra: Rows of punctures equidistant from one another, in furrows; punctures large, ocellate-umbilicate, separated by 1–2 puncture diameters from each other. Intervals convex, shiny, all subequal in height and width, with sparse, small punctures. Pygidium: Surface with punctures moderately large, ocellate, setigerous; setae minute to short, tawny. In lateral view, surface evenly and strongly convex. Legs: Protibia quadridentate, apical 2 teeth obliquely truncate and closer to one another than to other teeth. Apex of metatibia with 2 large teeth subequal in size. Apex of basal tarsomere of metatarsus extended into long, slender spine. Venter: Prosternal process short, glabrous, apex broadly rounded, posterior surface with transverse furrow, base with subacute lobe. Parameres: Each paramere with a medially projecting lobe crossing opposing lobe, lobes turning downwards at apex; lobes crossing either left over right or right over left ( Figs. 5–6).   Allotype.Female. Length 19.1 mm, width 13.0 mm. As holotypeexcept in the following respects: Head: Hollow of vertex with a few moderately large punctures, an erect tubercle on each side of head instead of a short horn, and interocular width equals 3.6 transverse eye diameters. Legs: Left front leg missing tarsomeres 4–5.   Paratypes.Males (3). Length 25.9–28.8 mm, width 12.3–13.6 mm. The male paratypesdo not differ significantly from the holotype. One specimen has the pronotal surface slightly more densely punctate. Females (3). Length 18.3–18.5 mm, width 13.0– 13.1 mm. The female paratypesdo not differs significantly from the allotype. One specimen has the interocular width of 3.4 transverse eye diameters.   Etymology.A Zonian is a dweller, usually a person, associated with the PanamaCanal Zone, a political entity that existed between 1903 and the absorption of the Canal Zone into the Republic of Panamabetween 1980 and 2000.   Distribution.  Phileurus zonianisis known only from Barro Colorado Island in the area of the former Canal Zone in the Republic of Panama( Fig. 8, 9).   Diagnosis.This species is distinguished by the smooth hollow of the vertex in males, pronotum densely punctate either side of median furrow, elytral intervals all subequal in height and with sparse, small punctures, apex of the metatibia with two strong teeth, prosternal process glabrous, and form of the parameres where the median lobe of each paramere angles downwards ( Figs. 5–6). This species was overlooked in my treatment of the Dynastinae of Costa Ricaand Panama(Ratcliffe 2003).   Biology.Other than being attracted to lights, nothing is known of the life history of this species. All of the specimens were taken in lowland rainforest. 1956-06-02 1995-06-03 1956-06-02 T, BARRO, COLORADO H. Wolda & Ft. Sherman & B. Ratcliffe & M. Jameson & Coll. H. Wolda & Col. H. Voris Panama One 3 128 One Two 2 127 10 Colon holotype Lincoln, NE Museum University 3 128 2 Nebraska holotype Battleground, WA & Brett C. Ratcliffe & Lincoln, NE United States of America Washington 3 128 1 Washington paratype