Peltonotus kyojinus Jameson and Wada, 2004

Jameson, Mary Liz & Wada, Kaoru, 2004, Revision of the genus Peltonotus Burmeister (Coleoptera: Scarabaeidae: Dynastinae) from Southeastern Asia, Zootaxa 502 (1), pp. 1-66 : 25-26

Peltonotus kyojinus Jameson and Wada , n. sp.

( Figs. 21 , 54 , 66 )

Type Material. Holotype female housed at FUJI with following label data and mouthparts mounted beneath specimen: a) " Mt. Bawang BORNEO INDONESIA 1993. JUN. N. Nishikawa­leg. " (typeface), b) "Fujioka­Collection Peltonotus­P­1" (typeface and handwritten, yellow label), c) our holotype label . Paratype female at WADA with label data: a) " Mt. Bawang West Kalimantan Borneo INDONESIA VII 1990 leg. N. Nisikawa " (typeface), b) "K. WADA Col. No. 569" (typeface and handwritten, yellow label), c) our paratype label .

Description. Holotype female. Length 21.3 mm. Widest width 10.0 mm. Color: Head, pronotum, scutellum, propygidium, pygidium, elytral suture and apical margin castaneous; elytral disc brown with iridescent bloom. Head: Surface of frons with base sparsely punctate, disc moderately densely punctate; punctures simple, lacking setae or multisetigerous laterally; setae minute (1–5 per puncture) or moderately long (0–1 per puncture). Surface of clypeus densely confluently punctate; punctures simple, multisetigerous laterally; setae minute (1–5 per puncture) or short laterally (0–1 per puncture). Clypeus laterally weakly bowed, apex truncate, corners square, beaded; bead weakly arcuate posteriorly. Labrum broadly emarginate at middle. Mandible obliquely quadrate, apex truncate, inner apex with 2 teeth. Mentum with apical half rounded ( Fig. 21 ), notched at middle; palpomere 2 simple (not dorsoventrally flattened or expanded; lacking abundant, thickened or curled setae), subequal in width to palpomere 1. Maxilla: mala without lamellate setal brush; stipes without dense, long setae (setae simple, not flattened or curled at apex); palpomere 2 lacking internomedial bump. Antennal club slightly longer than segments 2–7. Pronotum: Bead lacking anterior to scutellum. Surface moderately densely punctate; punctures simple, lacking setae. Lateral margin lacking long setae. Elytral sutural length: About 3.3 times length of scutellum. Elytra: Surface with 5 poorly developed, punctate, longitudinal striae between suture and humerus; punctures ocellate, moderate in size, moderately dense, lacking setae. Intervals similarly sculptured. Epipleuron in ventral view not expanded, not deeply incised at apex; in dorsal view lacking expansion ( Fig. 54 ). Propygidium: Surface shagreened and moderately densely punctate (disc) to densely confluently punctate (laterally); punctures simple, lacking setae or unisetigerous at apex; setae short (0–1 per puncture), tawny. Pygidium: Surface densely punctate; punctures shallow, simple, unisetigerous or lacking setae; setae minute. Venter: Prosternal keel elongate; apex projecting anteriorly at about 90° with respect to ventral plane, produced to about 1/2 of protrochanter, truncate. Legs: Foreclaws 1/2 length of foretarsomere 5, claws angled toward venter. Meso­ and metatibial claws with 2 setae, claws angled toward the venter, about 1/2 length of metatarsomere 5.

Paratype (1 female). Differs from the female holotype in the following respects. Length 21.0 mm. Widest width 10.1 mm. Color: Elytral dark brown. Head: Punctures lacking setae. Pygidium: Punctures lacking setae.

Diagnosis. Only female specimens are known for the species. This species is easily recognizable due to its large size (over 20 mm), brown elytra, and simple epipleuron ( Fig. 54 ). Peltonotus kyojinus is separated from its congeners by the following characteristics: labrum broadly emarginate at middle; mandible obliquely quadrate, apex truncate; mentum with apical half rounded, palpomere 2 simple (not dorsoventrally flattened or expanded; lacking abundant, thickened or curled setae), subequal in width to palpomere 1; maxilla without lamellate setal brush; stipes without dense, long setae (setae simple, not flattened or curled at apex); maxillary palpomere 2 lacking internomedial bump.

Etymology. The specific epithet “ kyojinus ” is taken from the Japanese word “kyojin” which means “giant”, referring to the large size of this species.

Distribution ( Fig. 66 ). Boven Kapuas Mountains, Kalimantan, Bornean Indonesia.

Locality records (2 specimens) from WADA, FUJI.

BORNEAN INDONESIA. West Kalimantan Province (2): Mt. Bawang.

Temporal Data. June (1), August (1).

Figures

FIGURE 66. Distribution of Peltonotus species FIGURE 67. Distribution of Peltonotus specie in Borneo. in Borneo.

FIGURES 19–28. Mentum, dorsal view of: 19) P. deltamentum, 20) P. gracilipodus, 21) P. kyojinus, 22) P. malayensis, 23) P. podocrassus, 24) P. nasutus, 25) P. nethis, 26) P. pruinosus, 27) P. similis, 28) P. sisyrus.

FIGURES 51–55. Elytral epipleuron (gray, ventral view) with position of metacoxa of: 51) P. brunnipennis, 52) P. fujiokai, 53) P. gracilipodus, P. podocrassus, P. silvanus, 54) P. kyojinus, 55) P. malayensis.