Pselaphogenius citimus (Broun, 1893)

Owens, Brittany E. & Carlton, Christopher E., 2022, --- Revision- -- of- -- the- -- New- -- Zealand- -- species- -- of- -- the- -- Genus- -- Pselaphogenius Reitter- -- (Staphylinidae: --- Pselaphinae: --- Pselaphitae: --- Pselaphini) ---, Zootaxa 5155 (2), pp. 187-220 : 212-213

Pselaphogenius citimus ­­­(Broun),­­­1893

Pselaphus citimus Broun (1893: 1043) , transferred ( Jeannel 1951: 9)

(Figs. 5d, 20a–c)

Type­­­Material­­­Examined.­­­ After examining the type series of Pselaphus citimus in the NHM and reviewing Broun’s original description, the following specimen was determined to be the holotype: (1­­­male) TYPE (red/orange label)// 1867.// Howick// New Zealand Broun coll. Brit. Mus. 1922-482 (Holotype). This matches the manuscript number, physical description, and locality information provided in the original description ( Broun 1893) .

Diagnosis.­­­ Externally, males of this species can be distinguished from other NZ species by the modification of ventrite II bearing a flattened median area instead of an ovate depression. The aedeagus is also distinct, with a large, shortened median lobe bearing distal complex of processes, a short straight ventral process and the absence of lateral processes.

Redescription.­­­ MALE. ­­­Integument: head, pronotum, elytra, abdomen, and appendages light brown, palpi lighter in color. Head:­­­ width between eyes equal to ½ length of head from base of vertex to apex of rostrum. Eyes rounded, composed of 15 facets. Frontal margin of rostrum slightly rounded in dorsal view. Gular mound modified, wider than long, broad anteriorly and rounded posteriorly; area of head posterior to gular mound flattened, slightly concave, bearing flattened scale-like setae. Maxillary palpomere IV as long as head, narrow, widened at base and distal ½ to 1/3, v-shaped sensory patches present. Thorax:­­­ pronotum basal sulcus absent, lateral antebasal foveae reduced to pits, median antebasal fovea absent. Mesoventrite with median shield unmodified. Metaventrite afoveate, raised into tumosity bearing small patches of short setae, metacoxae separated by extension of ventrite I. Legs unmodified. Elytra with one basal fovea and single sutural fovea present; discal stria present, sutural striae present. Abdomen:­­­ tergites of usual form for tribe. Ventrite I covered in dense, shining setae; ventrite II with basal sulcus occupying length of ventrite, sulcus densely setose, median flattened area along length of ventrite. Genitalia: aedeagus symmetrical. Median lobe protruding from fleshy extension of phallobase, produced into distal complexities. Ventral process simple, straight, shorter than median lobe. Lateral processes absent. Parameres broad and extending beyond median lobe.

Females.­­­Integument,­­­Head,­­­Thorax,­­­Abdomen:­­­ Females are similar to males except eyes slightly smaller and ventrite II lacking median flattened area.

Distribution.­­­ Pselaphogenius citimus is known from a large number of localities in the north island, including sites in Auckland (AK), Bay of Plenty (BP), Coromandel (CL) Gisborne (GB), Hawkes Bay (HB), Northland (ND), Taranaki (TK), Taupo (TO), and Waikato (WO). This species is also known from Nelson (NN) on the South Island.

Material­­­examined.­­­(1­­­male)­­­ New Zealand TO Waituhi Sdl 1.9.93// In leaf litter// JT Nunn Collection ( JN); ­­­ (1­­­male,­­­4­­­females)­­­ New Zealand: AK: Hunua Ra., 150 m Litter 4 Jan 1973 BM May, 73/2 ( LSAM); (­­­2­­­males,­­­ 1­­­female)­­­ New Zealand: AK: Hunua Ra., Kohukohunui , 550 m Litter, 30 Mar 1974 G Kuschel, 74/19 ( LSAM); (4­­­males,­­­2­­­females)­­­ New Zealand: AK: Hunua Ra., Kohukohunui , 600 m Litter, 30 Mar 1974 G Kuschel, 74/20 ( LSAM); (3­­­ males,­­­ 1­­­ female)­­­ New Zealand: AK: Mt. Dome , litter 15 Mar 1978 SB Peck ( LSAM); (3­­­ males,­­­ 1­­­ female)­­­ New Zealand: AK: Ponga Bush , Drury, nr. Pukekohe Litter, 4 Jan 1973 BM May, 73/1 ( LSAM); (1­­­female)­­­ New Zealand: AK: Ponga Bush , Drury, nr. Pukekohe Ground plants 13 Dec 1975, G Kuschel ( LSAM); (1­­­female)­­­ New Zealand: GB: Urewera , Orangihikoia Stm., litter, 6 Feb 1970 AW Don, 68/37 ( LSAM); (1­­­male)­­­ New Zealand: GB: Urewera N.P., near Aniwaniwa Visitor Center , Sifting toetoe litter, 21 Mar 2000 C Carlton, A Weir, #074 ( LSAM); (3­­­males,­­­4­­­females)­­­ New Zealand: GB: Urewera N.P., Lake Waikareiti 38 ∘ 47S 176 ∘ 10E / Dracophyllum / Nothofagus litter berlese 19 Mar 2000 C Carlton, A Weir, #058 ( LSAM); (1­­­male,­­­1­­­female)­­­ New Zealand: HB: Kaweka Ra., Makahu Hut 976 m, litter, 24 Feb 1971 JI Townsend, AC Eyles 71/21 ( LSAM); (4­­­females)­­­ New Zealand: HB: Kaweka Ra., Makahu Spur 1036m, moss, 24 Feb 1971 JI Townsend, 71/23 ( LSAM); (4­­­males,­­­1­­­female)­­­ New Zealand: ND: Waipoua Stm., 100 m Litter 19 May 1978, SB Peck ( LSAM); (1­­­male)­­­ New Zealand: TK: Awakino Gorge, Kuriwera Stm, litter, 23 Jan 1972 GW Ramsay, 72/65 ( LSAM); (1­­­female)­­­ New Zealand: TK: Dawson Falls, 975 m Mt. Egmont, litter, 65/387 16 Jun 1965, JI Townsend ( LSAM); (3­­­females)­­­ New Zealand: TK: Mt Egmont, Dawson Falls 946 m, litter, 62/1 14 Jan 1962, G Kuschel ( LSAM); (­­­1­­­male,­­­1­­­female)­­­ New Zealand: TO: Whirinaki Forest Park End of Okahu Rd. FIT, 23 Mar 2000 C Carlton, A Weir,#083 ( LSAM); (3­­­males,­­­3­­­females)­­­ NEW ZEALAND: AK: Hunua Ranges, Vining Reserve, Mangatangi Track, 240m, 37 ∘ 0.7.747/S, 175 ∘ 13.13.024/E, 17.xi.2005, Nothofagus-Agathis-Phyllocladus trichomanoides, etc.; FMHD#2005-008, berl. Leaf & log litter, A. Newton, A. Solodovnikov, et al.; ANMT site 1141 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (1­­­male)­­­ NEW ZEALAND: AK: Hunua Ranges Reg. Park, Kohukohunui Track nr. Mine Rd., 475m, 37 ∘ 02.396'S, 175 ∘ 11.251'E, 17.xi.2005, broadleaf-podocarp forest, numerous tree ferns; FMHD#2005-004, berl., leaf & log litter, A. Newton, A. Solodovnikov, et al.; ANMT site 1140 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (1­­­ male)­­­ NEW ZEALAND: AK: Waipipi Scen. Res., 2km. Wsw Waipipi 40m 37.14S 174.40E 22.ii.1987 native hardwood forest in gully A.Newton & M.Thayer 835 FMHD #87-269 berl., leaf & log litter, forest floor ( FMNH, EtOH); (5­­­males,­­­3­­­females)­­­ NEW ZEALAND: AK: Waitakere Ra., Nohoanga Scen. Res., 260m 36.57S 174.35E 23.ii.1987 hardwood-podocarp forest A.Newton & M.Thayer 836 FMHD #87-271 berl., frond litter at base of tree ferns. ( FMNH EtOH); (1­­­male)­­­ NEW ZEALAND: BP: Kaimai-Mamaku Forest Park, Mt. Te Aroha summit road, 450m, 37 ∘ 31.429'S, 175 ∘ 44.005'E, 19.xi.2005, mixed broadleaf forest w/many tree ferns, nikau palms; FMHD#2005-018, berl., leaf & log litter, A. Newton & M. Thayer; ANMT site 1144 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (5­­­males)­­­ NEW ZEALAND: BP: Kaimai-Mamaku Forest Park, Mt. Te Aroha, upper end Tul Mine Track, nr. Summit road, 775m, 37 ∘ 31.658'S, 175 ∘ 44.684'E, 19.xi.2005, low Nothofagus menziesii forest w/ Astelia ground layer; FMHD#2005-021, berl., forest litter, A. Newton & M. Thayer; ANMT site 1145 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (21­­­males,­­­7­­­females)­­­ NEW ZEALAND: GB: Urewera N.P., Waikaremoana Rd., S end Matanunui Ridge, 720m, 38 ∘ 44.404'S, 177 ∘ 05.806'E, 22.xii.2005, mixed broadleaf (incl. Nothofagus fusca )- podocarp; FMHD#2005-118, berl., leaf & log litter, A. Newton, M. Thayer, & A. Solodovnikov; ANMT site 1149 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (2­­­males,­­­3­­­females)­­­ NEW ZEALAND: GB: Urewera N.P., Maungapohatu Rd., 3.2 km E Taupeupe Saddle, 1110m, 38 ∘ 36.975'N, 177 ∘ 02.753'E, 22.xi.2005, mossy Nothofagus menzeisii forest; FMHD#2005-027, berl., leaf & log litter, A. Newton, M. Thayer, et al.; ANMT site 1148 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (3­­­males,­­­1­­­female)­­­ NEW ZEALAND: NN: Kahurangi N.P., Arthur Range, above Flora Saddle, 1000m, 41 ∘ 11.351'S, 172 ∘ 44.456'E, 28.xi-19.xii.2005, Nothofagus -dominant forest; FMHD#2005-044, flight intercept trap, A. Newton & M. Thayer, ANMT site 1156 propylene glycol to 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (12­­­males,­­­13­­­females)­­­ NEW ZEALAND: WO: Pirongia Forest Park, Tirohanga Track (above end Corcoran Rd.), 500m, 37 ∘ 58.409'S, 175 ∘ 07.173'E, 20.xi.2005, broadleaf forest; FMHD#2005-015, berl., forest litter, D. Clarke & A. Solodovnikov; ANMT site 1146 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (2­­­males)­­­ NEW ZEALAND: WO: Pirongia Forest Park, Mahaukura Track (above end Grey Rd.), 270m, 37 ∘ 58.218'S, 175 ∘ 06.523'E, 18.xi.2005, mixed broadleaf forest; FMHD#2005-011, berl., leaf & log litter, M. Thayer & A. Newton; ANMT site 1142 95% ethanol FIELD MUSEUM NAT. HIST. ( FMNH, EtOH); (1­­­male)­­­ NEW ZEALAND AK Birkenhead Kauri Park 4 Oct 1978 B.M.May ( NZAC); (1­­­male)­­­ Waitakere Drive 15.10.42// A.E.Brookes Collection ( NZAC); (6­­­ specimens)­­­ Waimarino, Main Trunk Line. N.Is.// 1867// Coll. T. Broun ( NZAC); (1­­­ male,­­­ 1­­­ female)­­­ NEW ZEALAND BP Tikitiki Stream Horohoro SF Mamaku Plateau 24 Jul 1076 // J.S. Dugdale litter 76/57 ( NZAC); (1­­­male)­­­ NEW ZEALAND BP Horohoro SF Mamaku Plat 550m 24 Jul 1976 J.S.Dugdale// Litter 76/44 ( NZAC); (2­­­males,­­­1­­­female)­­­ NEW ZEALAND BP Kaimai Ra 427m Leyland Tramline 22 Sep 1981 B.M.May// litter 81/92 ( NZAC); (1­­­female)­­­ Kaimai Ra. Matamara, Waikare M.Is.// 1600 feet // A.E.Brookes Coll. ( NZAC); (1­­­female)­­­ Kaimai 1520 1-1-31. AEB// A.E.Brookes Collection ( NZAC); (1­­­female)­­­ NEW ZEALAND, BP 9km from Opotiki 20 Aug 1976 A.R.Ferguson// Litter 76/63 ( NZAC); (2­­­males)­­­ NEW ZEALAND: BP Orete Forest Te Puia Hut Bush 15 Sep 1992 G. Hall &// R.C. Henderson Sifted litter 92/50 ( NZAC); (2­­­males,­­­2­­­females)­­­ NEW ZEALAND, BP Waiaroho 21 Oct 1992 J.S. Dugdale// litter & mosses 92/70 ( NZAC); (1­­­male)­­­ Leafmould Fitzgeralds Rotorua // R.M. Bull Collection ( NZAC); (2­­­males,­­­1­­­female)­­­ NEW ZEALAND, BP Te Koau, Hovelis Watching Dog 240m 24 Oct 1992 J.S. Dugdale// Litter 92/78 ( NZAC); (2­­­males,­­­3­­­females)­­­ NEW ZEALAND, BP Te Koau, 243m 15 Mar 1993 J.S. Dugdale Litter 93/43 ( NZAC); (1­­­male,­­­1­­­female)­­­ NEW ZEALAND, BP Waiaroho 10 Mar 1993 J.S. Dugdale Litter 93/36 ( NZAC); (1­­­male)­­­ NEW ZEALAND CL Gt Barrier I Mt Hobson Upper Kauri Dam 11 Apr 1982 // moss and litter ( NZAC); (3­­­males,­­­1­­­female)­­­ NEW ZEALAND ND Kauri Reserve Omahutu SF 10 Oct 1974 J.C. Watt// Litter 74/81 ( NZAC); (1­­­male)­­­ NEW ZEALAND, ND Kohuronaki, 270m 24 Nov 1982 G. Kuschel// Litter and decayed wood 82/123 ( NZAC); (4­­­males)­­­ NEW ZEALAND ND Parahaki Park 5 Nov 1981 G. Kuschel// litter and decayed wood 81/127 ( NZAC); (3­­­males,­­­1­­­female)­­­ NEW ZEALAND ND Parahaki Park 5 Nov 1981 G. Kuschel// litter and decayed wood 81/126 ( NZAC); (2­­­males,­­­1­­­female)­­­ NEW ZEALAND ND Waipoua SF Toatoa Grove 25 Nov 1980 G.Kuschel// Sifted litter 80/121 ( NZAC); (2­­­males,­­­1­­­female)­­­ NEW ZEALAND TK Mt Egmont NP Stratford Mtn House, 846m 23 May 1986 // C.L. Lyal Leaf litter CL 474 ( NZAC); (1­­­male)­­­ NEW ZEALAND, WO Mt Pirongia SF Rangitukia Stream 13 June 2001 R. Leschen// berlesate of tree holes leaf litter RL664 ( NZAC); (1­­­male)­­­ NEW ZEALAND WO Mt Pirongia 962m 16 Jan 1977 A.K. Walker litter 77/2 ( NZAC); (4­­­males,­­­3­­­females)­­­ NEW ZEALAND WO Mt Pirongia 962m 16 Jan 1977 A.K. Walker litter 77/2 ( NZAC).