Pselaphogenius chandleri Owens

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 : 196-198

Pselaphogenius chandleri Owens ­­­&­­­Carlton,­­­sp.­­­nov.

(Fig. 8a–c)

Type­­­Material.­­­ Holotype: (1­­­male) New Zealand, BP Orete Forest Te Puia Hut 26 Apr 1993 G. Hall // Sifted litter 93/96 ( NZAC) . Paratypes:­­­(2­­­males,­­­3­­­females)­­­ holotype locality ( NZAC) .

Etymology.­­­ This species is named after Donald. S. Chandler, fellow pselaphine worker, whose years of support to both authors has been much appreciated.

Diagnosis.­­­ Externally, P. chandleri is difficult to distinguish from other species of Pselaphogenius in New Zealand. The form of the aedeagus, with the simple, straight, median lobe and the absence of lateral and ventral processes, is unique.

Description.­­­ MALE holotype. ­­­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 small, composed of three facets. Frontal margin of rostrum narrowly rounded, with sparse suberect setae in dorsal view. Gular mound modified, longer than wide, broad anteriorly and narrowed posteriorly; area of head posterior to gular mound flattened, slightly concave, nude. Maxillary palpomere IV longer than head, narrow, widened at base and distal 1/5 to 1/6, v-shaped sensory patches present. Thorax:­­­ pronotum basal sulcus absent, lateral antebasal foveae and median antebasal fovea absent. Mesoventrite with median shield unmodified. Metaventrite afoveate, posterior margin with elongate setae extending to base of ventrite II, metacoxae separated by extension of ventrite I. Legs unmodified. Elytra with two basal foveae, single sutural fovea present; discal stria absent, 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, shallow oval median depression small, restricted to basal portion of ventrite. Genitalia: aedeagus asymmetrical. Median lobe straight, simple, slightly down-curved. Lateral processes absent. Ventral process absent. Parameres present, as long as median lobe.

Females.­­­ Integument,­­­ Head,­­­Thorax,­­­Abdomen:­­­ similar to male except ventrite II lacking median ovate depression.

Distribution.­­­ This species is known from several localities in BP.

Material­­­examined.­­­BP:­­­(1­­­female)­­­ NEW ZEALAND, BP Hicks Bay 25 Oct 1992 J.S. Dugdale Litter 92/79 ( NZAC); (1­­­female) ­­­ NEW ZEALAND BP Lake Okataina 9 Oct 1995 M-C Lariviere & A Larochelle // Litter 95/12 ( NZAC); (2­­­females) ­­­ NEW ZEALAND, BP Orete Forest Te Puia Hut Bush 19 Oct 1992 J.S. Dugdale ( NZAC); (1­­­male,­­­2­­­females) ­­­ NEW ZEALAND, BP Orete Forest Te Puia Hut 13 Apr 1992 G. Hall // Liter 92/34 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Papatea 5 Nov 1993 R.C. Henderson Litter 93/115 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Rereauira 26 Apr 1993 J.S. Dugdale Litter 93/97 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Te Koau, Hovells Watching Dog 240m 24 Oct 1992 J.S. Dugdale // Litter 92/78 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Te Koau, 243m 15 Mar 1993 J.S. Dugdale Litter 93/43 ( NZAC); (2­­­females) ­­­ NEW ZEALAND, BP Te Koau , Hovells Watching Dog Track 360m 31 Jan 1993 ( NZAC); (1­­­male,­­­2­­­females) ­­­ NEW ZEALAND, BP Te Koau, 120m 29 Apr 1993 J.S. Dugdale Litter 93/101 ( NZAC); (3­­­males,­­­1­­­female) ­­­ NEW ZEALAND, BP Te Koau, 125m 2 May 1993 R.C. Henderson Litter 93/107 ( NZAC); (1­­­male) ­­­ NEW ZEALAND, BP Te Koau 140m Twin Puriri's 31 Jan 1993 J.S. Dugdale // Litter 93/10 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Te Koau Main Ridge, 220m 23 Sep 1992 J.S. Dugdale // Litter 92/83 ( NZAC); (1­­­male) ­­­ NEW ZEALAND, BP Lottin Pt Rd Waenga Bush 15 Mar 1984 G. Hall &// R.C. Henderson Litter 54/5 ( NZAC); (1­­­male,­­­3­­­females) ­­­ NEW ZEALAND, BP Waiaroho 10 Mar 1993 J.S. Dugdale Litter 93/36 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Waiaroho 2 Nov 1995 G. Hall Litter 95/13 ( NZAC); (1­­­female) ­­­ NEW ZEALAND, BP Waiotuma Stm 85m 28 Jan 1993 J.S. Dugdale Litter 93/9 ( NZAC) .