Nesamblyops kuscheli Sokolov 2023, sp. nov.
Creators: name: Sokolov, Igor M.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Nesamblyops
Nesamblyops kuscheli

description: Nesamblyops kuscheli, sp. nov.
Figures. 9E, 12E, 14M–O, 17E, 19
Type material. HOLOTYPE, male, in NZAC, labeled: \ Flora Hut 2500’ 4-2-65 Mt.Arthur moss G.Kuschel \ DSIR \ No \ NZ PB \. PARATYPES (14 specimens, dissected 4 exx.), 4 males and 2 females labeled same as holotype; 1 female labeled: \ Damp stream bed S. of Flora Hut. Mt. Arthur NELSON 12 Nov 69 J.I. Townsend \ NZ PB \; 2 males and 3 females labeled: \ Flora Mt. Arthur 3-2-65 moss G.Kuschel \ DSIR \ No \ NZ PB \; 1 female labeled: \ Flora Track 1066m Mt.Arthur Nelson \ 16 Nov 69 B.M. May \ Litter 66/221 \ NZ PB \; 1 male labeled: \ Flora Tr. 1005m Mt.Arthur Nelson 20 Nov 69 S.M.Silcock \ Litter 69/231 \ NZ PB \.
Etymology. The specific epithet is a Latinized eponym in the genitive case and is based on the surname of Guillermo (Willy) Kuschel, a recognized New Zealand entomologist of Chilean origin, and a world specialist in weevils, who made an incredible contribution to the knowledge of the beetle fauna of the Southern Hemisphere, particularly the fauna of New Zealand.
Type locality. New Zealand, South Island, Nelson, Kahurangi National Park, Mount Arthur.
Recognition. Adults of this species (Fig. 9E) are practically indistinguishable from the adults of many Nesamblyops species based on external characters (e.g., Figs. 9A–B, 10C) and are distinguished from them by the structures of the male genitalia.
Description. Of medium size for genus (SBL range 1.65–1.85 mm, mean 1.74± 0.059 mm, n=14).
Habitus. Body form (Fig. 9E) markedly convex, elongate ovoid, general proportions wide (WE/SBL0.41±0.009), head narrow relative to pronotum (WH/WPm 0.70±0.014), proportions of pronotum in comparison to elytra average for genus (WPm/WE 0.73±0.016).
Color. Body color brunneorufous, appendages testaceous.
Prothorax. Pronotum (Fig. 12E) moderately long in comparison to elytra (LP/LE 0.41±0.008) and moderately transverse (WPm/LP 1.27±0.017), with lateral margins arcuately constricted posteriorly (WPm/WPp 1.31±0.030). Anterior angles indistinct, posterior angles obtuse (112–119°), rounded. Width between posterior angles greater than between anterior angles (WPa/WPp 0.91±0.020). Basal margin almost rectilinear, slightly convex at middle.
Elytra. Ovoid, narrowly depressed along suture, comparatively long (LE/SBL 0.59±0.003) and moderately wide (WE/LE 0.71±0.015). 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. 14O) moderately arcuate and moderately twisted. Shaft subparallel, tapering in apical third. Apex straight with rounded tip. Apical orifice of moderate length, occupies almost one-third of the shaft length. Ventral margin of median lobe almost straight. Walls of shaft without poriferous canals. Dorsal copulatory sclerites with well-developed rC-sclerite and with reduced V-contour, dorsal branch of which protruding toward basal orifice (Fig. 14O). Left paramere (Fig. 14M) of moderate width slightly tapering to apex, bearing two long setae. Right paramere (Fig. 14N) of moderate length, bearing two long setae, which are slightly shorter than the length of paramere. Ring sclerite as in Fig. 17E.
Female internal genitalia. Not examined.
Geographical distribution. This species is known from the Mount Arthur area, South Island only (Fig. 19, red circles).
Habitat. Specimens were collected from moss and litter samples (labels mention as habitat the damp stream bed).
Relationships. The structure of the male genitalia of N. kuscheli suggests its relatedness to the other species with a well-developed rC-sclerite and small V-contour in the internal sac of the median lobe. Details of sclerite configurations and bisetose parameres point out on affinity of the new species to N. moorei, described below.
description: Published as part of 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, pp. 151-192 in Zootaxa 5375 (2) on pages 170-171, DOI: 10.11646/zootaxa.5375.2.1, http://zenodo.org/record/10184224