Hemiphileurus warneri Ratcliffe, 2001

Ratcliffe, Brett C., 2001, New Species Of Hemiphileurus Kolbe (Coleoptera: Scarabaeidae: Dynastinae) From Mexico, Guatemala, Colombia, And Brazil, The Coleopterists Bulletin 55 (4), pp. 433-443 : 440-441

Hemiphileurus warneri Ratcliffe , new species

(Figs. 16–18)

Type Material. Holotype labeled ‘‘ MEXICO: Nayarit, Hwy 200, 20 km E Los Piedras, VI­ 7–1991, 730 m, U. V. light, W.B. Warner. ’’ Holotype deposited at the University of Nebraska State Museum (Lincoln, NE) .

Holotype. Male. Length 21.0 mm; width 9.7 mm. Color black. Head: Surface of frons completely, coarsely rugose, with median, deep fovea; a low, rounded tubercle present mesad of anterior border of each eye. Clypeus triangular, apex acute, reflexed; surface with sparse, moderately­sized punctures and with strong carina extending from clypeal apex to base of each tubercle. Interocular width equals 3.1 transverse eye diameters. Antenna 10­segmented, club slightly longer than segments 2–7. Mandibles with external edges arcuate, apices acute. Pronotum: Surface with moderately large punctures; punctures moderately dense, becoming denser in anterior fourth and in longitudinal furrow. Median, longitudinal furrow deep, narrow, extending from near base to near apex. Apex just behind marginal bead with small tubercle either side of midline. Base with complete marginal bead. Elytra: Surface with 5 distinct, punctate striae between suture and humeral umbone; punctures moderately large, ocellate, subcontiguous or separated from one another in each row by less than half a puncture length. Intervals convex, with sparse micropunctures. Pygidium: Surface with punctures moderately dense, moderately large, weakly ocellate, setigerous; setae minute, tawny. In lateral view, surface regularly convex. Legs: Foretibia with 4 subequally separated teeth. Median transverse carina on meso­ and metatibiae ending with acute spine on upper surface. Apex of posterior tibia with strong, acute spine on upper angle and with 7 (left) and 4 (right) short, broad spinules below spine. Apex of first tarsomere of posterior tarsus with strong, acute spine dorsally. Venter: Prosternal process (Fig. 18) broad, moderate in length, apex flattened into transversely subrectangular, slightly concave plate, setae lacking. Last sternite with sparse, scattered punctures. Parameres: Figures 16–17.

Etymology. I take great pleasure in naming this species after Bill Warner

(Chandler, AZ) who collected the specimen and provided it to me for description.

Remarks. Hemiphileurus warneri is similar externally to H. illatus (Le­ Conte) and will key to this species in Endrödi (1985). The parameres of H. warneri (Figs. 16–17) are different than those of H. illatus (Figs. 19–20). The most striking difference between the parameres, aside from the obvious length proportions, is the almost entirely concave surface of each paramere that abruptly becomes convex at the apices in H. warneri whereas in H. illatus there is only an oblong depression on the center of the paramere. In addition, the base of the last sternite in H. illatus is densely punctate to transversely rugulose in a narrow band while in H. warneri the entire surface of the last sternite is sparsely punctate and lacks any distinctive sculpturing across the base.

The holotype was taken at a U. V. light trap in lowland deciduous forest in a mesic canyon at the end of dry season .