Deretaphrus ignarus Pascoe, 1862: 462 Masters 1871: 79 Blackburn 1903: 120–122 Deretaphrus ignarius : Lea 1898: 548 Deretaphrus pascoei Macleay, 1871: 165 Masters 1871: 79 Lea 1898: 549–550 Blackburn 1903: 120 A Taxonomic Revision of the Genus Deretaphrus Newman, 1842 (Coleoptera: Cucujoidea: Bothrideridae) Lord, Nathan P. McHugh, Joseph V. The Coleopterists Bulletin 2013 mo 12 2013-12-20 67 1 107 Pascoe, 1862 Pascoe 1862 [756,1102,1087,1108] Insecta Bothrideridae Deretaphrus Animalia Coleoptera 31 32 Arthropoda species ignarus  ( Figs. 48, 68, 104–105, 151, 169, 175, 210–211)      Deretaphrus ignarus Pascoe, 1862: 462.  Masters 1871: 79;  Blackburn 1903: 120–122, 128, 130; Carter and Zeck 1937: 199–201.     Deretaphrus ignarius: Lea 1898: 548, 550. Misspelling, no status.     Deretaphrus pascoei Macleay, 1871: 165.  Masters 1871: 79;  Lea 1898: 549–550;  Blackburn 1903: 120; Carter and Zeck 1937: 200–201. Synonymized by Carter and Zeck 1937: 200.   Diagnosis.This species can be readily distinguished from congeners by the nearly glabrous antennae, the anterior margin of the submentum being evenly arcuate, elytral interstitial intervals 3, 5, and 7 being strongly carinate and raised near apex, and genitalic characters.  Deretaphrus ignarusmost closely resembles  D. fossus,  D. viduatus, and  D. xanthorrhoeae. It can be distinguished from  D. fossusby the nearly glabrous antennae, the rounded and downturned anterior angles of the pronotum, the non-sinuate lateral pronotal margins, the less-depressed area surrounding the pronotal median longitudinal canal, and the distinctly more carinate elytral intervals, with interval 6 raised for a much longer portion. It can be distinguished from  D. viduatusby the nearly glabrous antennae and the more strongly raised elytral intervals, with some of both even and odd intervals carinate. It can be distinguished from  D. xanthorrhoeaeby the slight, rounded to sinuate laterally expanded supra-ocular ridges, the larger and deeper pronotal punctures, a narrower, parallel-sided and more deeply impressed pronotal median longitudinal canal, elytral intervals 3, 5, and 7 being much more distinctly carinate, a lack of sexual dimorphism of abdominal ventrite V in females, and a generally darker color (dark reddish brown to black, as opposed to lighter reddish orange in  D. xanthorrhoeae).   Redescription.Length 6–10.5 mm. Width 1.7–2.8 mm. Body elongate, parallel, dark orange to dark red; dorsal surface glabrous, matte to slightly shiny; ventral surface moderately shiny, glabrous except for minute setae that arise from punctures. Head: In dorsal view, slightly narrowed anteriorly; with slight, sinuate to rounded supraocular ridge, eyes partially concealed from above; punctures small and dense except sparse along posterior margin. Frontoclypeal suture distinct, arcuate anteromedially. Anterior margin of clypeus broadly arcuate. Submentum shape similar to Fig. 48; narrowly separated from subgenal braces, without paired setose pits; anterior margin evenly arcuate, slightly inflexed, with large punctures, strongly produced anteroventrally over oral cavity, mentum concealed. Antennal groove welldeveloped, impunctate. Antenna sparsely setose, appearing glabrous except under high magnification, segments 3–8 with a single transverse row of short setae; setae on antennal club segments extremely sparse. Antennal club slightly asymmetrical, leading edge of club segments much more inflated than trailing edge. Dorsal surface (external face) of mandible without median setose groove. Thorax( Fig. 68): Pronotum elongate, tapering to base widest near anterior ¼; dorsal surface evenly convex; anterior margin straight; anterior angles rounded but prominent; base narrower than elytral bases; posterior margin weakly sinuate; posterior angles depressed, with small denticle; lateral margin with incomplete carina, forming a distinct raised border in dorsal view, terminating anteriorly before the true anterior margin of the pronotum. Pronotal disc with medium, dense, shallow punctures. Pronotal median longitudinal canal well-developed, interrupted; anterior portion of canal a narrow slit, surrounding area slightly depressed; posterior portion of canal narrow, deeply impressed, impunctate internally, abruptly expanding at base, posterior margin of canal appearing rounded, bordered on either side by a raised portion of the pronotal disk; posterolateral margin of the raised portion bears a distinct impression ( Fig. 68). Hypomeron densely punctate, punctures shallow and larger than found on pronotal disc; lateral walls nearly vertical. Prosternum flat medially, strongly deflexed at lateral margin. Prosternum depressed immediately anterior to procoxae. Tergosternal suture more or less straight. Elytra( Figs. 104–105): Elytron evenly convex; interstitial intervals 3, 5, 7, and 9 raised and shiny for entire length; intervals 3, 5, and 7 becoming very prominent, carinate near the apex; intervals 4 and 6 weakly raised at mid-length, interval 6 more prominent than 4. In some, interval 4 minutely raised, if at all. Crest of raised intervals with punctures bearing minute setae. Basal elytral margin with intervals 3 and 5 each ending in a knob-like protuberance; protuberance of interval 5 merges with finger-like callosity on the elytral shoulder. Legs: Setation sparse; inner face of tibia with 2 prominent fringes of relatively short setae. Ventral apex of tibia with 2 pockets of dense setae that arise on either side of the large, curved tibial spur. Tarsus sparsely setose except for 2 pockets of dense setae on the ventral surface at the apex of tarsomeres 1–3. Abdomen: Ventrite V simple. Punctures on ventrite V smaller and denser than ventrites I–IV. Aedeagus: Phallobase as in Fig. 151. Tegmen consisting of paired, subtriangular plates at middle; 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 arcuate; paramere sparsely setose with short setae at apical margin; dorsal surface of paramere with short subtriangular process; process thickest at base, narrowing apically, slightly shorter than half the length of the paramere, apex slightly swollen; processes moderately separated, parallel medially. Penis as in Fig. 169; short, moderately thick, more or less straight; apex narrowed and pointed; base slightly expanded, bearing short, paired anterior struts. Penis bicolored, lighter for basal 1/4.  Variation.The size and color are variable within the species. In some, the anterior angles of the pronotum are slightly more pronounced and the posterior portion of the pronotal median longitudinal canal may be slightly wider and less tapered. The degree of carination of elytral interstitial intervals 4, 6, and 7 is variable, with those intervals slightly more pronounced in some specimens.   Distribution. Australia: Australian Capital Territory, New South Wales, Northern Territory, Queensland, South Australia, and Victoria( Fig. 175).   Biology.One specimen was taken under the bark of  Eucalyptussp.[ANIC 246NL]. Two specimens were taken at a mercuryvapor light [ANIC 17NL, ANIC 21NL]. Nine specimens were found near the pupa of  Paroplites australis( Coleoptera: Cerambycidae) [SAMA 73–81NL].   Remarks.Neither Pascoe (1862)nor Macleay (1871)mentioned the number of specimens examined of  D. ignarusand  D. pascoei, respectively. In order to stabilize these names, a lectotypeis here designatedfrom the syntypeseries of  Deretaphrus ignarusPascoeand a lectotypeand two paralectotypesare here designatedfrom the syntypeseries of  Deretaphrus pascoeiMacleay.     TypeLocality.  Deretaphrus ignarus: Sydney, New South Wales;  Deretaphrus pascoei: Gayndah, Queensland.  Type Material Examined. D e re t a p h r u s ignarus.  LECTOTYPE( Figs. 210–211) ( BMNH, card-mounted) label data: “Type [round label with orange border] // N.S.W. [in Pascoe’ s hand on green oval label] // Deretaphrus ignarusType Pasc [in Pascoe’ s hand] // Pascoe Coll. 93–60” [ BMNH 104 NL, examined]. Sex not determined.   Deretaphrus pascoei. LECTOTYPE( Figs. 212– 213) ( ANIC, pinned) label data: “Gayndah // Deretaphrus Pascoei, Macl. Gayndah[in Macleay’ s hand] // On permanent loan from MACLEAY MUSEUM University of Sydney // SYNTYPE[red label] //” [ANIC 2 NL, examined]. Sex not determined. PARALECTOTYPE: ( AMSA, cardmounted with one other paralectotype) label data: “[round orange label] // Deretaphrus PascoeiMcL.W. Gayndah [in Macleay’ s hand, label folded] // HOLOTYPE[red label] // K27386[handwritten] // Australian Museum K 231598” [AMSA 3 NL, examined]. Sex not determined. PARALECTOTYPE: ( AMSA, card-mounted with one other paralectotype) label data: same as above [ AMSA4 NL, examined]. Sex not determined. Unfortunately, the two paralectotypesfrom the AMSA(card-mounted together) are not conspecific, nor are they  D. pascoei. The specimen on the left is  D. viduatusand the specimen on the right is  D. puncticollis.The specimens bear a determination label in Macleay’ s hand that matches the type locality. Therefore, we assume these are part of Macleay’ s syntypic series.  Additional Material Examined (120). AUSTRALIA:AUSTRALIAN CAPITAL TER- RITORY (A.C.T.): Canberra, 5 km. NE ( UGCA1 NL). NEW SOUTH WALES: 1260 Rd. Bagawa State Forest ( ANIC114 NL); Armidale ( ANIC117–118 NL, ANIC137 NL); Bangaroo ( ANIC309 NL); Bogan River ( ANIC177–183 NL); Cambridge Plateau, Richmond Range State Forest, WNW of Casino ( ANIC21 NL); Forest Reefs ( SAMA35–36 NL, SAMA54 NL); Greta ( ANIC 294 NL); Hornsby ( AMSA36 NL); Illawarra ( AMSA34–35 NL, ANIC40 NL, BMNH17 NL); Katoomba ( ANIC185 NL); Monaro ( AMSA47 NL); Narrabri ( ANIC290 NL); Nimbin Rocks, near Nimbin ( ANIC113 NL); Pyrocarpa Reserve, Doubleduke State Forest, WSW of New Italy ( ANIC17 NL); Ryde ( ANIC108 NL); Sydney ( ANIC33 NL, SAMA53 NL, SAMA209–210 NL, SAMA228 NL); North Sydney ( BMNH18 NL); Tamworth ( AMSA66 NL); Taralga ( BMNH15 NL); Wagga Wagga ( MAMU20–21 NL); no locality ( MAMU18 NL, MAMU28 NL, SAMA92 NL, USNM62 NL). NORTHERN TERRITORY: Roper River ( SAMA204–205 NL); no locality: SAMA194 NL). QUEENSLAND: Brisbane ( UQIC22 NL); Foleyvale Aboriginal Reserve ( HNHM8 NL); Gayndah ( SAMA55 NL, UQIC19 NL); Millmerran ( AMSA43 NL); Stanthorpe ( QMBA20 NL, QMBA26–30 NL); Stanwell ( UQIC46 NL); Tambourine Mountain ( ANIC158 NL); Warwick ( ANIC291 NL); no locality ( ANIC3 NL). SOUTH AUSTRALIA: Lucindale ( ANIC37 NL, SAMA46 NL, SAMA64 NL, SAMA73–81 NL); no locality ( ANIC34 NL, MAMU38 NL, SAMA93 NL). VICTORIA: Birchip ( MVMA46–47 NL, SAMA89–90 NL); Broadford ( BPBM21 NL); Fern TreeGully ( UQIC36 NL); Healesville, Coranderrk Reserve ( ANIC246 NL); Melbourne ( BMNH14 NL, OUMNH1 NL); Moe ( ANIC99 NL); Mount Rosea, the Grampians ( SAMA212 NL); no locality ( ANIC85 NL, BMNH12 – 13 NL, MAMU22 NL, MAMU37 NL, MNHUB14–17 NL, MNHUB57 NL). STATE UNKNOWN: Victorian Alps ( SAMA56–61 NL, SAMA65–66 NL); no locality ( BMNH4 NL, BMNH11 NL, FMNH24 NL, MCZ25–28 NL, MCZ33 NL, MNHUB13 NL, MNHUB18 NL, MVMA48 NL, MVMA50–51 NL, OUMNH19 NL, SAMA233 NL). New South Wales 33 34 1 New South Wales holotype BMNH, NL 33 34 BMNH 104 1 lectotype