Deretaphrus rodmani Lord and McHugh

Lord, Nathan P. & McHugh, Joseph V., 2013, A Taxonomic Revision of the Genus Deretaphrus Newman, 1842 (Coleoptera: Cucujoidea: Bothrideridae), The Coleopterists Bulletin (mo 12) 67, pp. 1-107 : 49-51

Deretaphrus rodmani Lord and McHugh , new species

( Figs. 39 , 78 , 124–125 , 161 , 173 , 236–237 )

Diagnosis. This species can be readily distinguished from congeners by the much larger and angled punctures found within the pronotal median longitudinal depression, the sparsely punctate antennae, the head with laterally expanded and rounded supra-ocular ridges that partially conceal the eyes from above, and a distribution restricted to Western Australia.

Description. Length 6.1–9.9 mm. Width 1.9–3.1 mm. Body elongate, parallel, light to dark red; dorsal surface glabrous, matte to slightly shiny; ventral surface moderately shiny, glabrous except for minute setae that arise from punctures. Head ( Fig. 39 ): In dorsal view, slightly narrowed anteriorly, subtriangular; with broadly rounded, laterally expanded supra-ocular ridges; eyes nearly entirely concealed from above; punctures small and dense except sparse along posterior margin. Frontoclypeal suture distinct, arcuate, nearly straight. Anterior margin of clypeus broadly arcuate. Submentum shape similar to Fig. 52 ; fused to subgenal braces, without paired setose pits; anterior margin arcuate, strongly produced anteroventrally, mentum completely concealed. Antennal groove well-developed, impunctate internally. Antenna sparsely setose, appearing glabrous except under high magnification; segments 3–8 with a single transverse row of minute setae. Antennal club segments with minute setae. Antennal club slightly asymmetrical, leading edge of club segments much more inflated than trailing edge. Dorsal surface (external face) of mandible with median setose groove. Thorax ( Fig. 78 ): Pronotum elongate, tapering to base, widest near anterior margin; dorsal surface convex, depressed along midline, more strongly deflexed near anterior angles; anterior margin arcuate; anterior angles rounded; base narrower than elytral bases; posterior margin weakly sinuate; posterior angles with small denticle; lateral margin with incomplete carina, forming a distinct raised border in dorsal view. Pronotal disc with large, round to oval punctures. Pronotal median longitudinal depression present, shallow, wide; punctures larger and denser in median depression, at times confluent. Hypomeron sparsely punctate, punctures large and shallow, each bearing a seta; lateral walls strongly deflexed. Prosternum flat medially, strongly deflexed at lateral margin. Tergosternal suture more or less straight. Elytra ( Figs. 124–125 ): Elytron evenly convex; interstitial intervals 5, 6, 7, and 9 raised for entire length; interval 9 feebly raised; interval 3 raised towards apex; interval 4 raised for apical half. Basal elytral margin with intervals 3 and 5 each ending in a knob-like protuberance; callosity on elytral shoulder thick and projecting dorsolaterally. Legs: Femur and tibia with short, sparse setae; inner face of tibia with 2 fringes of long setae. Tarsus sparsely setose except for 2 pockets of dense setae on the ventral surface at the apex of tarsomeres 1–3. Abdomen: Ventrite V comes to a slight point. Aedeagus: Phallobase as in Fig. 161 . Tegmen consisting of large, paired subtriangular plates; plates narrowly touching medially. Basal piece with short anterolateral struts; struts slightly curved anteriorly. Parameres moderately short, broadly rounded, distinctly separated and individually articulated to phallobase, internal lateral margins sinuate; paramere sparsely setose with short setae at apical margin; dorsal surface of paramere with large subtriangular process; process thickest at base, narrowing apically, nearly as long as the paramere, apex pointed; processes moderately separated, parallel medially. Penis similar to Fig. 169 ; short, moderately thick, more or less straight; apex narrowed and pointed; base slightly expanded, bearing short, paired anterior struts. Penis bicolored, lighter in basal 1/3.

Variation. Size and color are variable within the species. The punctation along the midline of the pronotal disc is somewhat variable, ranging from sparsely (in most specimens) to moderately punctate, the punctures often being confluent.

Distribution. Known only from Western Australia ( Fig. 173 ).

Biology. Several specimens emerged from the tunnels of Penthea saundersii ( Coleoptera : Cerambycidae ) in Acacia sp. The remains of dead Penthea larvae were found in the tunnels, strongly suggesting the possibility of P. saundersii as a

host of D. rodmani . Four specimens were also taken from Casuarina sp. (Casuarinaceae) [AMSA 65NL, AMSA 67–69NL].

Etymology. The epithet rodmani (noun) honors James E. (Jim) Rodman, founder of the National Science Foundation Partnerships for Enhancing Expertise in Taxonomy (PEET) program.

Remarks. A holotype is here designated and deposited in WAMP. Forty paratypes are here designated and deposited in AMSA, ANIC, NPLC, SAMA, and WAMP.

Type Locality. 31°13′S, 119°20′E, Southern Cross , Western Australia .

Type Material Examined. H O L O T Y P E ( Figs. 236–237 ) ( WAMP, point-mounted; cocoon point-mounted beneath specimen) label data: “Southern Cross (31°13′S 119°20′E) W. Australia 21.X.80 PTO R.P. McMillan // [underside of label 1] Emerged from tunnel of Penthea sp. 14.iii.80 remains of Penthea larva in tunnel [hand-written] // Western Australian Museum Entomology Reg. no. 65199 [yellow label] // Deretaphrus xanthorrhoeae Lea ? [handwritten] Det. J.F. Lawrence ” [ WAMP 18 NL, examined]. Sex not determined. PARATYPE ( WAMP, pinned) label data: “Miling Western Australia 20 Nov. 1974 A. Page // in bored section of branch [handwritten] // Western Australian Museum Entomology Reg. no. 65263 [yellow label]” [ WAMP 61 NL, examined]. Sex not determined. PARATYPE ( WAMP, pinned) label data as above, except: Label 3: “Western Australian Museum Entomology Reg. no. 65264 [yellow label]” [ WAMP 62 NL, examined]. Sex not determined. PARATYPE ( SAMA, card-mounted) label data: “ Mullewa W.A. Miss F. May // Deretaphrus ignarus Pasc. HJC [in Carter’ s hand] // S. Aust. Museum specimen [orange label]” [ SAMA 91 NL, examined]. Sex not determined. PARATYPE ( ANIC, on same pin but point-mounted separately from other paratype) label data: “ Emerged from tunnel of Penthea sp. 19.iii.81 [handwritten] Southern Cross (31°13′S 119°20′E) W. Australia 21.x. 80 Larva? [“21.x. 80 Larva?” is handwritten] R.P. McMillan ” [ ANIC 62 NL, examined]. Sex not determined. PARATYPE ( ANIC, on same pin but point-mounted separately from other paratype) label data as above [ ANIC 63 NL, examined]. Sex not determined. PARATYPE ( AMSA, pinned) label data: “Mt. Magnet, W.A. Aug 1981 2 x Casuarina sp. G . A. Holloway [handwritten] // Australian Museum K 231649” [ AMSA 67 NL, examined]. Sex not determined. PARATYPE ( AMSA, pinned) label data as above, except: Label 2: “Australian Museum K 231650” [ AMSA 68 NL, examined]. Sex not determined. PARA- TYPE ( AMSA, pinned) label data as above, except: Label 2: “Australian Museum K 231647” [ AMSA 65 NL, examined]. Sex not determined. PARATYPE ( AMSA, pinned) label data as above, except: Label 2: “Australian Museum K 231651” [ AMSA 69 NL, examined]. Sex not determined .

PARATYPE ( ANIC, pointed) label data: “ Southern Cross (31°13′S 119°20′E) W. Australia 21.X.80 PTO R.P. McMillan ” // “Emerged from tunnel of Penthea sp. 19.iii.81 Remains of Penthea larva in tunnel [handwritten on underside of label]” [ ANIC 64 NL, examined]. Sex not determined . PARATYPE ( WAMP, pointed) label data same as above [ WAMP 19 NL, examined]. Sex not determined . PARATYPE ( WAMP, pointed) label data same as above [ WAMP 20 NL, examined]. Sex not determined . PARATYPES ( WAMP, card-mounted) 4, card-mounted together, label data: “ Southern Cross (31°13′S 119°20′E) W. Australia 21.X.80 R.P. McMillan ” // “predators in larval stage on Penthea saundersi [handwritten]” [ WAMP 14–17 NL, examined]. Sexes not determined . PARATYPES ( WAMP, card-mounted) 4, card-mounted together, label data: “ Southern Cross (31°13′S 119°20′E) W. Australia 21.X.80 R.P. McMillan ” // in Penthea saundersii tunnel [handwritten on underside of label]” [ WAMP 30–33 NL, examined]. Sexes not determined . PARATYPES ( WAMP, card-mounted) 4, cardmounted together, label data same as above [ WAMP 34–37 NL, examined] . PARATYPES ( WAMP, card-mounted) 4, card-mounted together, label data same as above [ WAMP 26–29 NL, examined]. Sexes not determined . PARATYPES ( WAMP, card-mounted) 3, card-mounted together, label data same as above [ WAMP 38–40 NL, examined]. Sexes not determined . PARATYPE ( NPLC, disarticulated) label data same as above [ WAMP 41 NL – with NPL, disarticulated and in glycerine]. Male . PARATYPE ( WAMP, pointed) label data: “ Southern Cross (31°13′S 119°20′E) W. Australia OCT. 1977 R.P. McMillan // FROM TUNNEL OF PENTHEA SAUNDERSII [handwritten]” [ WAMP 53 NL, examined]. Sex not determined . PARATYPE ( WAMP, pointed) label data same as above [ WAMP 54 NL, examined]. Sex not determined . PARATYPE ( WAMP, pointed) label data same as above [ WAMP 55 NL, examined]. Sex not determined . PARATYPE ( WAMP, cardmounted) label data: “ Southern Cross (31°13′S 119°20′E) W. Australia 21.X.80 R.P. McMillan // as predator larva on Penthea sp. ” [ WAMP 51 NL, examined]. Sex not determined . PARATYPE ( WAMP, card-mounted) label data: “ Southern Cross (31°13′S 119°20′E) W. Australia 21 OCT. 1980 R.P. McMillan ” [ WAMP 42 NL, examined]. Sex not determined . PARATYPE ( WAMP, card-mounted) label data: “ Larva 21.X. 80 Adult 23.XII. 80 in Acacia tunnel [handwritten] Southern Cross (31°13′S 119°20′E) W. Australia 21 OCT. 1980 R.P. McMillan ” [ WAMP 43 NL, examined]. Sex not determined . PARATYPE ( WAMP, card-mounted) label data: “R. P. McMILLAN DATE OCT.11.50 BEJOORDING” [ WAMP 22 NL, examined]. Sex not determined . PARATYPE ( WAMP, pinned) label data: “ M. de Graaf 26.iii.1965 BINNU W. AUSTRALIA ” [ WAMP 24 NL, examined]. Sex not determined .

Additional Material Examined (1). AUSTRALIA: NORTHERN TERRITORY: Alice Springs, 11 mi. N ( CASC 123 NL). Note: This specimen is not regarded as a member of the type series due to the rarity of specimens from this locality and far proximity of the collection locality (Northern Territory) to that of other type specimens (Western Australia) .

Figures

Figs. 35–41. Deretaphrus species, head. 35) D. bucculentus, dorsal view; 36) D. carinatus, dorsal view; 37) D. incultus, dorsal view; 38) D. parviceps, dorsal view; 39) D. rodmani, dorsal view; 40) D. ocularis, dorsal view; 41) D. ocularis, lateral view.

Figs. 75–81. Deretaphrus species, pronotum. 75) D. parviceps; 76) D. piceus; 77) D. puncticollis; 78) D. rodmani;

Figs. 124–129. Deretaphrus species, elytra, dorsal and lateral views. 124–125) D. rodmani; 126–127) D. viduatus;

Figs. 158–164. Deretaphrus species, phallobase. 158) D. parviceps; 159) D. piceus; 160) D. puncticollis;

Figs. 173–174. Distribution of Deretaphrus species. 173) D. alveolatus, D. antennatus, D. parviceps, and D. rodmani;

Figs. 228–236. Primary type specimens and specimen labels of Deretaphrus species. 228–229) D. piceus, lectotype, MNHUB; 230–231) D. bakewellii, lectotype, BMNH; 232–233) D. thoracicus, lectotype, BMNH; 234–235) D. puncticollis, lectotype, SAMA; 236) D. rodmani, holotype, WAMP.

Figs. 237–245. Primary type specimens and specimen labels of Deretaphrus species. 237) D. rodmani, holotype labels; 238–239) D. viduatus, lectotype, BMNH; 240–241) D. colydioides, lectotype, BMNH; 242–243) D. cribriceps, lectotype, BMNH; 244–245) D. popularis, lectotype, BMNH.

Figs. 48–53. Deretaphrus species, head capsule, ventral view, showing setae and shape of submentum. 48) D. ignarus;

Figs. 165–172. Deretaphrus species, penis (left: dorsal view; right: lateral view; phallobase, to scale with penis). 165) D. boliviensis; 166) D. bucculentus; 167) D. gracilis; 168) D. hoplites; 169) D. ignarus; 170) D. oregonensis; 171) D. parviceps; 172) D. puncticollis.