Nesamblyops moorei, Sokolov, 2023

Sokolov, Igor M., 2023, Fourteen new species of the genus Nesamblyops Jeannel (Coleoptera: Carabidae: Anillini) from the South Island of New Zealand with redescription of the genus and description of a new subtribe, Zootaxa 5375 (2), pp. 151-192 : 174-176

Nesamblyops moorei , sp. nov.

Figures. 10B , 12H , 15D–F , 17G , 22

Type material. HOLOTYPE, male, in NZAC, labeled: \ NEW ZEALAND BR Mawhera SF Kangaroo Ck 5km SE Ngahere 27 Jan 1972 \ J.S. Dugdale Litter 72/86 \ Beech Forest Utilization Project \ DSIR \ No \ NZ PB \.

PARATYPES (35 specimens, dissected 11 exx.), 2 males and 2 females labeled same as holotype; 2 females labeled: \ NEW ZEALAND BR Mawhera SF 10 Nov 1971 J. McBurney Litter 71/144 \ Beech Forest Utilization Project \ DSIR \ No \ NZ PB \; 1 female labeled: \ NEW ZEALAND SC Mawhere S.F. 15km SE of Ngahere 305m 10 Nov 1971 J.S. Dugdale \ Litter 71/43 \ NZ PB \; 1 female labeled: \ NEW ZEALAND BR Tuttys Plateau Mawhera SF 20 Sep 1972 J.S. Dugdale \ moss 72/178 \ Beech Forest Utilization Project \ NZ PB \; 1 male labeled: \ Rapahoe 7ml. N of Greymouth 29.5.62 G. Kuschel \ DSIR \ No \; 1 male labeled: \ E Reefton BR 10 Feb 65 N. A. Walker \ Litter 65/33 \ DSIR \ No \ NZ PB \; 1 male labeled: \ NEW ZEALAND BR Tawhai SF Big Red Rd 3km S of Reefton 28 Jan 1972 \ J. McBurney Litter 72/76 \ DSIR \ No \ NZ PB \; 1 male and 3 females labeled: \ NEW ZEALAND BR Tawhai SF 3km S of Reefton 9 Nov 1971 J.S. Dugdale \ Litter 71/128 \ DSIR \ No \; 1 male labeled: \ NEW ZEALAND BR Lake nr. Mt.Priestly Paparoa Ra. 1060m 10 Dec 1969 J. McBurney \ Litter 69/241 \ NZ PB \; 1 male and 2 females labeled: \ Hochstetter BR 7 Nov 1972 J.S. Dugdale Litter 72/189 \ Beech Forest Utilization Project \ NZ PB \; 1 male and 1 female labeled: \ NEW ZEALAND BR Jacksons Taramakau Rd , 150m 26 Jan 1978 G. Kuschel \ Sifted litter and rotten wood 78/55 \ NZ PB \; 5 males and 6 females labeled: \ NEW ZEALAND BR Punakaiki 46m Truman Track 9 Jun 1983 H.P. McColl \ Litter 7/83 \ NZ PB \; 1 female labeled: \ Bullock Creek Punakaiki Nelson 12 Oct 70 \ J.I. Townsend Litter 70/154 \ NZ PB \; 2 males labeled: \ New Zealand WD Kellys Creek Otira 22-Mar-09 \ Washed soil sample, broadleaf forest \ NZMS 260 K33: 932218 350m \.

Etymology. The specific epithet is a Latinized eponym in the genitive case and is based on the surname of Barry Philip Moore, famous Australian entomologist and chemist, who contributed greatly to the knowledge of Australian and New Zealand Carabidae , including the publication of the revision of New Zealand Anillini .

Type locality. New Zealand, South Island, West Coast, Ngahere area, Mawhera Forest.

Recognition. Adults of this species ( Fig. 10B ) are practically indistinguishable from the adults of many Nesamblyops species based on external characters (e.g., Figs 9E , 10C ) and are distinguished from them by the structures of the male genitalia.

Description. Small for genus (SBL range 1.43–1.75 mm, mean 1.63± 0.110 mm, n=19).

Habitus. Body form ( Fig. 10B ) moderately convex, elongate ovoid, general proportions wide (WE/SBL 0.41±0.010), head narrow relative to pronotum (WH/WPm 0.71±0.019), proportions of pronotum in comparison to elytra average for genus (WPm/WE 0.75±0.021).

Color. Body color brunneorufous, appendages testaceous.

Prothorax. Pronotum ( Fig. 12H ) moderately long in comparison to elytra (LP/LE 0.41±0.009) and moderately transverse (WPm/LP 1.27±0.034), with lateral margins almost rectilinear constricted posteriorly (WPm/WPp 1.29±0.033). Anterior angles indistinct, posterior angles obtuse (114–123°), rounded. Width between posterior angles greater than between anterior angles (WPa/WPp 0.90±0.031). Basal margin almost rectilinear, slightly convex at middle.

Elytra. Ovoid, narrowly depressed along suture, comparatively long (LE/SBL 0.59±0.006) and moderately wide (WE/LE 0.69±0.014). Humeri completely rounded. Lateral margins slightly divergent at basal half, subparallel at middle and evenly rounded to apex in apical third.

Male genitalia. Median lobe of aedeagus ( Fig. 15F ) moderately arcuate and slightly twisted. Shaft subparallel basally, moderately tapering in apical half. Apex straight with small, rounded tip. Apical orifice of moderate length occupies one third of the shaft length. Ventral margin of median lobe almost straight.Walls of shaft lacking poriferous canals. Dorsal copulatory sclerites with following modifications. Dorsal V-contour reduced and represented only by short dorsal branch, while medial rC-sclerite of typical size and sclerotization for genus ( Fig. 15F ). In addition, there are two moderately sclerotized elongate structures apically from the main sclerites with the longest of those forming together with the rC-sclerite a distinctive teardrop shape. Left paramere ( Fig. 15D ) comparatively wide, with short apex, bearing two long setae. Right paramere ( Fig. 15H ) narrow, of moderate length, bearing two long setae, which are slightly shorter than the length of paramere. Ring sclerite as in Fig. 17G .

Female internal genitalia. Not examined.

Geographical distribution. The range of the species occupies the territory to the west of the Southern Alps from the Tamarakau River at the south to Paparoa National Park at the north, in the central part of the West Coast District ( Fig. 22 , black circles).

Habitat. Specimens were collected from litter, litter and rotten wood, and moss samples (labels mention broadleaf forest as plant community without further details).

Relationships. The structure of the male genitalia of N. moorei suggests its relatedness to the other species with rC-sclerite and V-contour in copulatory sclerites of median lobe. Small V-contour, the shape of median lobe, and bisetose parameres suggest the affinity between N.moorei and N. kuscheli .

Figures

FIGURE 9. Digital images of habitus of New Zealand Nesamblyops species, dorsal aspect.A—N. canaanensis (Canaan, Nelson, SO), B—N. disjunctus (Fletchers Creek, Buller, SO), C—N. hobbit (9mi. N Karamea, Nelson, SO), D—N. karamea (Karamea River Gorge, Nelson, SO), E—N. kuscheli (Flora Hut, MountArthur, Nelson, SO), F—N. magnificus (Allison Reserve,Akatore, Dunedin, SO). Scale bar = 1.0 mm.

FIGURE 10. Digital images of habitus of New Zealand Nesamblyops species, dorsal aspect. A—N. montanus (Lake Sylvester, Kahurangi National Park, Nelson, SO), B—N. moorei (Kangaroo Creek, Mawhera Forest, Buller, SO), C—N. ovipennis (Mount Arthur, Nelson, SO), D—N. rotundicollis (Onekaka, Nelson, SO), E—N. solitarius (Italian Creek, Capleston, Buller, SO), F—N. subcaecus (Sharp) (Greymouth, Buller, SO). Scale bar = 1.0 mm.

FIGURE 12. Digital images of pronota of New Zealand Nesamblyops species, dorsal aspect. A—N. canaanensis (Canaan, Nelson, SO), B—N. disjunctus (Fletchers Creek, Buller, SO), C—N. hobbit (9mi. N Karamea, Nelson, SO), D—N. karamea (Karamea River Gorge, Nelson, SO), E—N. kuscheli (Flora Hut, Mount Arthur, Nelson, SO), F—N. magnificus (Allison Reserve, Akatore, Dunedin, SO), G—N. montanus (Lake Sylvester, Kahurangi National Park, Nelson, SO), H—N. moorei (Kangaroo Creek, Mawhera Forest, Buller, SO), I—N. ovipennis (Mount Arthur, Nelson, SO). Scale bar = 0.2 mm.

FIGURE 15. Line drawings of male genitalia of New Zealand Nesamblyops species. N. montanus (Relax Shelter, Mount Robert Ridge, Nelson, SO): A—left paramere, left lateral aspect, B—right paramere, right lateral aspect, C—median lobe, right lateral aspect. N. moorei (Kangaroo Creek, Mawhera Forest, Buller, SO): D—left paramere, left lateral aspect, E—right paramere, right lateral aspect, F—median lobe, right lateral aspect. N. ovipennis (Mount Arthur, Nelson, SO): G—left paramere, left lateral aspect, H—right paramere, right lateral aspect, I—median lobe, right lateral aspect. N. rotundicollis (Onekaka, Nelson, SO): J—left paramere, left lateral aspect, K—right paramere, right lateral aspect, L—median lobe, right lateral aspect. N. solitarius (Italian Creek, Capleston, Buller, SO): M—left paramere, left lateral aspect, N—right paramere, right lateral aspect, O—median lobe, right lateral aspect. N. subacecus (Margarets Tarn Lake, Arthur’s Pass, Mid Canterbury, SO): P—left paramere, left lateral aspect, Q—right paramere, right lateral aspect, R—median lobe, right lateral aspect. Scale bar = 0.1 mm.

FIGURE 17. Line drawings of ring sclerite of New Zealand Nesamblyops species, male genitalia, dorsal aspect. A—N. canaanensis (Canaan, Nelson, SO), B—N. disjunctus (Fletchers Creek, Buller, SO), C—N. hobbit (Mount Domett, Nelson, SO), D—N. karamea (Karamea River Gorge, Nelson, SO), E—N. kuscheli (Flora Hut, Mount Arthur, Nelson, SO), F—N. montanus (Relax Shelter, Mount Robert Ridge, Nelson, SO), G—N. moorei (Kangaroo Creek, Mawhera Forest, Buller, SO), H—N. ovipennis (Mount Arthur, Nelson, SO), I—N. rotundicollis (Onekaka, Nelson, SO), J—N. subcaecus (Margarets Tarn Lake, Arthur’s Pass, Mid Canterbury, SO), K—N. viator (Secretary Island, Grono Bay, Fjordland, SO), L—N. victoriae (Capleston, Victoria Range, Buller, SO). Scale = 0.2 mm.

FIGURE 22. Distributional records for the Nesamblyops species and images of male median lobe, obtained from specimens, collected in the line-connected with images localities. Yellow circles—N. victoriae; black circles—N. moorei; red circles—N. disjunctus. Scale bar = 0.5 mm.