Pselaphogenius stouti­­­Owens­­­&­­­Carlton, 2022

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 : 209-210

Pselaphogenius stouti­­­Owens­­­&­­­Carlton ,­­­sp.­­­nov.

(Fig. 18a–c)

Type­­­Material.­­­ Holotype: (1­­­male)­­­ N. Zeal.: ND: Waipoua SF, Toronui Tr. C 150m 13.iv.1980 kauri-podocarpbroadlf.-nikau palm forest A. Newton, M. Thayer // berl., leaf & log litter, forest floor ( NZAC) . Paratypes:­­­ (2­­­males,­­­2­­­females)­­­ holotype locality ( FMNH) .

Etymology.­­­ This species is named in honor of Dr. Mike Stout for his support of this project as member of the first author’s advisory committee.

Diagnosis.­­­ Externally, this species is difficult to distinguish from others in the genus. The form of the aedeagus, with the enlarged and asymmetrical outer lateral process, simple inner lateral process, and simple ventral process 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 five facets. Frontal margin of rostrum gently 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, v-shaped sensory patches present. Thorax:­­­ pronotum basal sulcus absent, lateral antebasal foveae and median antebasal fovea reduced to minute pits. Mesoventrite with median shield unmodified. Metaventrite afoveate, medially flattened, metacoxae separated by extension of ventrite I. Legs unmodified. Elytra with two basal foveae and 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, deep oval median depression reaching apex. Genitalia: aedeagus asymmetrical. Median lobe simple, apically curved dorsally. Outer lateral process asymmetrical, present only on right side, as long as ventral lobe, curved outwards, distally. Inner lateral process simple, narrow. Ventral process ventrally curved, distally, about as long as median lobe. Parameres present, as long as median lobe.

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

Distribution.­­­ This species is only known from localities in ND.

Material­­­Examined.­­­(2­­­males) New Zealand: ND: Waipoua Stm., 100 m Litter 19 May 1978, SB Peck ( LSAM); ­­­ (1­­­male)­­­ NEW ZEALAND ND Headquarters Rd beside river Waipoua Forest 16 Dec 1976 // V.A. May litter 76/110 ( NZAC) .