Adalmus velutinus Reitter, 1885

Byeon, Ui-Joung, Chandler, Donald S., Leschen, Richard A. B. & Park, Jong-Seok, 2024, Revision of the New Zealand genus Adalmus with description of six new species (Coleoptera: Staphylinidae: Pselaphinae), Acta Entomologica Musei Nationalis Pragae 64 (1), pp. 17-32 : 28-29

Adalmus velutinus Reitter, 1885

( Figs 9 , 10 )

Adalmus velutinus Reitter, 1885: 338 . Type locality: Greymouth.

Adalmus velutinus : RAFFRAY (1890:107), RAFFRAY (1904:603), RAFFRAY (1908: 117), RAFFRAY (1911: 46); NEWTON & CHANDLER (1989: 30); NOMURA & LESCHEN (2006: 246).

Dalmisus batrisodes Sharp, 1886: 382 . Type locality: Greymouth; syn. nov.

Dalmisus batrisodes : BROUN (1893: 1048); RAFFRAY (1890: 43), RAFFRAY (1904: 582), RAFFRAY (1908: 108), RAFFRAY (1911: 43); HUTTON (1904: 178); HUDSON (1922: 365); NEWTON & CHANDLER (1989: 27); NOMURA & LESCHEN (2006: 246, Fig. 23).

Plectomorphus longipes Broun, 1912: 412 . Type locality: Greymouth; syn. nov.

Plectomorphus longipes : HUDSON (1923: 366); NOMURA & LESCHEN (2006: 250).

Plectomorphus longiceps Broun, 1913: 200 . Type locality: Greymouth; syn. nov.

Plectomorphus longiceps : HUDSON (1923: 366); NOMURA & LESCHEN (2006: 250).

Type material. Adalmus velutinus . LECTOTYPE (here designated): J

( MNHN): “Nouv. Zélande / Adalmus m. velutinus [J] Nouv. Zeal. 1885 / Museum Paris 1917 Coll. A. Raffray / [red label] TYPE / A. velutinus A. Raffray det / LECTOTYPE Adalmus velutinus Reitter sel.DSChandler ’24 [yellow label]”.

Dalmisus batrisodes . LECTOTYPE: J ( BMNH): “ Dalmisus batrisodes Type ex. Parte D.S. [written on large card with specimen] / Greymouth [red line] New Zealand Helms. / Sharp Coll. 1905-313 / LECTOTYPE Dalmisus batrisodes Sharp sel. DSChandler ’24 [yellow label]” . PARA- LECTOTYPE : ♀ ( BMNH): “ Dalmisus batrisodes Type D.S. Greymouth

Helms [written on large card with specimen] / Type H.T. [orange-bordered circle] / Greymouth [red line] Newlua5! Zealand Helms. / Sharp Coll. 1905-313”.

Plectomorphus longipes . HOLOTYPE: ♀ ( BMNH):“Type [red-bordered disc] / 3213 / Greymouth [red line] Greymouth - Lewis. / Plectomorphus longipes ”.

Plectomorphus longiceps . HOLOTYPE: ♀ ( BMNH): “ Type [orange- -bordered disc] / Greymouth [red line] New Zealand. Helms. / Sharp Coll. 1905-313. / Plectomorphus longiceps . [♀]”.

Additional material examined. SOUTH ISLAND: NN [Nelson]: Slaters Road, 0.7 km s Whangamoa Saddle, 410m 13.xii.1984 – 4.i.1985 Nothofagus spp forest A.Newton/M.Thayer 703 // flight intercept (window) trap (16JJ 7♀♀ FMNH); same locality label, but:Compared with type of Broun Plectomorphus longipes by DSChandler [green label] (1 J, genitalia dissected, DSC). SD [Marlborough Sounds]: Tennyson Inlet, east side Duncan Bay, 30m 15.xii.1984 – 5.i.1985 podo.- Nothofagus for. A.Newton/M.Thayer 709 // flight intercept (window) trap (1 ♀ FMNH). Tennyson Inlet, west side Te Mako Bay, 125m 15.xii.1984 – 5.i.1985 Nothofagus -podo-hdwd. A.Newton/M.Thayer 710 // flight intercept (window) trap (1 J, slide mounted, 1 J 8 ♀♀ FMNH); same locality, but: Compared with type of Sharp ’98 Dalmisus batrisodes by DSChandler [green label] // Compared with type of Broun ’98 Plectomorphus longiceps by DSChandler [green label] (1 ♀ DSC).

Diagnosis. Males of this species can be distinguished from other Adalmus species by the following combination of characters: antennomere I approximately 2.1–2.5 times longer than wide ( Fig. 9A ); mesotrochanter with distinct spine ( Fig. 9C ; arrow), pro- and metatrochanters unmodified ( Figs 9B, D ); left paramere thick, long, with apex blunt; right paramere slender, short, with apex sharp; median lobe curved, with two spines at middle and apical 1/3, apex bifurcate ( Figs 9E–G ).

Redescription. BL 2.10–2.29 mm (FBL 1.67–1.76 mm, 15 specimens measured); body color blackish-brown, legs, antenna, maxillary palpus, and tarsi reddish-brown; body pubescent ( Fig. 9A ).

Head slightly broader than long (HL: HW = 43: 48), widest across eyes, eyes convex, rostrum approximately half head width (HW: RW = 48: 27), tempora distinct, longer than eyes in dorsal view and oblique; antennal length approximately 1.00– 1.04 mm, antennomere I approximately 2.1–2.5 times longer than wide, antennomere II longer and broader than III–VIII, antennomeres IX–XI forming indistinct club, XI 1.5 times as long as broad.

Thorax. Prothorax slightly broader than head (HW: PW = 48: 51), subhexagonal (PL: PW = 51: 53), broadest at anterior 2/5, sharply narrowing at middle, and narrowest at anterior margin.

Elytra broader than pronotum (EW: PW = 75: 51), slightly broader than long (EL: EW = 75: 81); with sutural striae; basal impressions at elytral foveae, subhumeral foveae present.

Legs. Profemur rugose on ventral side; mesotrochanter with distinct spine, pro- and metatrochanters with smooth posterior margins, tibiae and femora similar in lengths, moderately long.

Aedeagus asymmetric, 0.49 mm long, with diaphragm and basal stem; parameres symmetric, left paramere thick, long, with apex blunt, right paramere slender, short, with apex sharp; median lobe curved, with two spines at middle and apical 1/3, apex bifurcate.

Sexual dimorphism. Female has a mesotrochanteral spine less developed than that of male.

Comments to classification. Dalmisus syn. nov. is placed here as a junior subjective synonym of Adalmus , and Dalmisus batrisoides syn. nov. is considered a junior subjective synonym of Adalmus velutinus , based on the examination of types by the second author. In addition, the types of Plectomorphus longiceps syn. nov. and P. longipes syn. nov. are conspecific with A. velutinus (D. S. Chandler, pers. observ.), and thus, they are also considered junior subjective synonyms of A. velutinus . The type locality for all four species is Greymouth, South Island.

Distribution. New Zealand (South Island: BR, NN, SD; Fig. 10 ).

Figures

Fig. 9. Adalmus velutinus Reitter, 1885. A – male dorsal habitus; B – front leg; C – middle leg; D – hind leg; E–G – aedeagus in ventral (E), lateral (F) and dorsal (G) view.

Fig. 10. Collection localities in New Zealand.