Peltonotus podocrassus 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 : 34-37

Peltonotus podocrassus Jameson and Wada , n. sp.

( Figs. 23 , 41a–c , 53 , 65 )

Peltonotus peninsularis Miyake 2000: 113–115 , 118. Miyake (2000) described ten new speciesgroup taxa. Article 16.4 (ICZN 1999) states that all species published after 1999 must be accompanied by: (1) the explicit fixation of a holotype or syntypes and (2) a statement of intent that specimens will be (or are) deposited in a collection. Peltonotus peninsularis is an unavailable name for two reasons. First, Miyake neglected to designate/denote a holotype or syntype (s) in his description. He did not include locality data or the number of specimens in the type series. Thus, the requirement of explicit fixation of a holotype or syntype is not fulfilled. Second, Miyake noted (2000: 105) that “the greater part of holotypes and paratypes, described in this paper are preserve (sic) in the Research Institute of Evolutionary Biology.” Although vague, this statement could be interpreted to fulfill the requirement of a statement of intent regarding the deposition of the type specimen. However, we were unable to locate the holotype for this taxon at RIEB; we found only seven paratypes. Thus, the requirement that a statement of type deposition is not fulfilled. Based on both of these oversights, the name is unavailable. Unavailable name.

Type Material. Holotype male housed at UNSM with following label data, male genitalia and mouthparts mounted beneath specimen: a) "Gunong Jasar, Cameron Highland, 29 IV 1984 m" (handwritten, light­green label), b) "KAORU WADA COLLECTION" (typeface), c) " Collection of Mary Liz Jameson " (typeface), d) our holotype label . Allotype female housed at ZMHB with label data: a) " PERAK Kwala Kangsa" (typeface), b) "f" (typeface), c) " Peltonotus malayensis Arr. M. d. Type vergl. London 18.XII.35" (typeface and handwritten, Ohaus' blue homotype label), d) " Peltonotus malayensis, Arr. Compared with type G.J.A." (typeface and handwritten, Arrow's white homotype label), e) our allotype label. Four paratypes (3 males, 1 female) at WADA, UNSM, MLJC. Two paratypes (1 male, 1 female) in WADA collection with our paratype labels and with label data: a) "Cameron Highlands ()­miles MALAYSIA. IV.1987 " (typeface and handwritten), b) "K. WADA Co1 No. 045" (typeface, yellow label). Two paratypes with identical data; 1 at MLJC and 1 at NSMT. Seven paratypes (3 male, 4 female) at RIEB with our paratype labels and with label data (all typeface): “Tanah Rata, Malaysia, 30­III­1976, Y. Miyake leg.” (1 male, 1 female), “Tanah Rata, Malaysia, 20­III­1976, Y. Miyake leg.” (1 female), “Tanah Rata, Malaysia, 1­IV­1984, Y. Miyake leg.” (2 female), “ 39 miles from Tapah, Malaysia, 30­III­1976, Y. Miyake leg.” (1 male), “V.R. (C.H.), Malaysia, 21­III­1978 ” (1 male) .

Description. Holotype male. Length 18.7 mm. Widest width 8.9 mm. Color: Head, pronotum, scutellum, pygidium, elytron, and venter castaneous. Elytra with weak iridescent bloom Head: Surface of frons with base impunctate (middle) to sparsely punctate (laterally), middle frons to apex moderately densely punctate; punctures simple, multisetigerous; setae minute (1–12+ per puncture) and moderately long adjacent to eye (0–1 per puncture). Surface of clypeus moderately densely punctate, more dense laterally; punctures simple, multisetigerous; setae minute (1–12+ per puncture) and short near margin (0– 1 per puncture). Clypeus laterally weakly bowed, apex truncate, corners square, beaded; bead not weakly arcuate posteriorly. Labrum broadly narrowly emarginate at middle. Mandible with external edge rounded, inner apex with 2 weak teeth. Mentum with apical half rounded ( Fig. 23 ), notched at middle; palpomere 2 dorsoventrally flattened, about 3 times width of palpomere 1, setose; setae dense, moderately long, rufous, weakly thickened, not curled. Maxilla: mala with dense lamellate setal brush; stipes with setae dense, long, flattened at apex, not curled at apex; palpomere 2 with weak internomedial bump. Antennal club subequal to segments 2–7. Pronotum: Bead lacking anterior to scutellum. Surface moderately densely punctate; punctures simple, multisetigerous laterally; setae minute (1–7 per puncture) and short (0–1 per puncture). Lateral margin lacking long setae. Elytral sutural length: About 4.5 times length of scutellum. Elytra: Surface with 7 poorly developed, punctate, longitudinal striae between suture and humerus; punctures ocellate, moderate in size, moderately dense, multisetigerous apically and laterally; setae minute (1–20+ per puncture). Intervals similarly sculptured. Propygidium: Surface shagreened and moderately densely punctate; punctures simple, unisetigerous, with a transverse row near apex; setae short, rufous. Pygidium: Surface densely punctate; punctures ocellate, multisetigerous; setae minute (7–12+ per puncture) and short (0–1 per puncture). Venter: Prosternal keel elongate; apex projecting anteriorly at about 90° with respect to ventral plane, produced to about 3/4 of protrochanter, truncate. Legs: Foretibia of male bidentate; lateral margin with short, dense setae. Foretarsomere 5 subequal in length to tarsomeres 1–4, greatly thickened; foretarsomeres 3–4 with apices expanded, dorsal and ventral apices of tarsomeres 1–4 clothed with small patch of dense, short setae. Foreclaws of male with inner claw broadly curved, about 5 times thicker than outer claw; outer claw elongate­arcuate, about 1/2 the length of inner claw; empodium bulbous at base. Meso­ and metatibial claws of male with 2 setae, claw angled toward venter, about 3/4 length of metatarsomere 5. Metatibia of male with apical spurs weakly curved; ventral spur produced to middle of metatarsomere 1, dorsal spur produced to apex of metatarsomere 1. Parameres: Fig. 41a–c .

Allotype Female. Differs from the holotype in the following respects. Length 17.6 mm. Widest width 8.9 mm. Color: Head, pronotum, scutellum, propygidium, pygidium, and venter black; elytra black with iridescent bloom. Head: Surface of frons with setae minute (1–12+ per puncture). Surface of clypeus with setae minute (1–12+ per puncture). Pronotum: Punctures lacking setae. Elytron: Epipleuron of female in ventral view expanded, broadly incised at sternite 4; in dorsal view expansion well­developed ( Fig. 53 ). Legs: Foreclaws 1/2 length of foretarsomere 5, claw angled toward venter.

Paratypes (6 males, 5 females). Differ from the holotype and allotype in the following respects. Length 16.3–17.4 mm. Widest width 8.2–8.3 mm. Leg: Metatibial ventral spur produced to middle of metatarsomere 1, dorsal spur produced to middle of metatarsomere 1.

Etymology. The specific epithet “ podocrassus ” refers to the greatly enlarged fifth foretarsomere in the male (podus = foot, crassus = stout, thick). This is compared with males of P. gracilipodus , the sister species, in which the males have a slender fifth foretarsomere.

Diagnosis. Males of P. podocrassus are easily separated from other species of Peltonotus based on the metatibial spur that is subequal or slightly longer than metatarsomere 1 (the metatibial spur is usually subequal in length to metatarsomeres 1–2). Peltonotus podocrassus closely resembles P. sisyrus and P. gracilipodus . Peltonotus podocrassus differs from P. gracilipodus by the form of the fifth foretarsomere in the male (robust in P. podocrassus , slender in P. gracilipodus ), palpomere 2 of the mentum that lacks curled setae, and palpomere 2 of mala that lacks curled setae. Peltonotus podocrassus differs from P. sisyrus based on the rounded apex of the mentum (triangular in P. sisyrus ) and the length of the metatibial spur (subequal to metatarsomeres 1–2).

Distribution ( Fig. 65 ). Peninsular Malaysia.

Locality records (13 specimens) from WADA, MLJC, ZMHB, RIEB .

PENINSULAR MALAYSIA. Perak State (1): Kwala Kangsa. Pahang State (11): Cameron Highlands, Gunong Jasar, Tanah Rata, Tapah (39 mi from). No Data (1).

Temporal Data. March (5), April (7).

Remarks. In addition to neglecting to fulfill the requirements for species­group names in Article 16.4 (ICZN 1999; see above), Miyake’s (2000) invalid description of P. peninsularis did not include locality data and did not indicate the number of specimens in the type series. Because other descriptions of new species in Miyike’s publication fulfilled the requirements of Article 16.4, we believe that it was simply an oversight in the case of P. peninsularis .

Figures

FIGURE 65. Distribution of Peltonotus species in Southeast Asia and Sundaland.

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 40–42. Male genitalia in dorsal (parameres only [a]) and lateral views (parameres and phallobase [b–c]) of: 40) P.fujiokai, 41) P. gracilipodus and P. podocrassus, 42) P.karubei.

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.