Nesamblyops subrufus, Sokolov, 2023
publication ID |
https://doi.org/ 10.11646/zootaxa.5375.2.1 |
publication LSID |
lsid:zoobank.org:pub:F3D0E008-556C-4FAD-BF51-4F1A714325DA |
DOI |
https://doi.org/10.5281/zenodo.10197015 |
persistent identifier |
https://treatment.plazi.org/id/055987E2-8B2D-7353-FF7D-D5D2FE2F8E52 |
treatment provided by |
Plazi |
scientific name |
Nesamblyops subrufus |
status |
sp. nov. |
Nesamblyops subrufus , sp. nov.
Figures. 11A View FIGURE 11 , 13D View FIGURE 13 , 16A–C View FIGURE 16 , 20 View FIGURE 20
Type material. HOLOTYPE, male, in NZAC, labeled, dissected: \ Dublin Terrace 25.11.61 G.Kuschel \ Leafmould \ DSIR \ Ns \ NZ PB \. PARATYPES (2 specimens), 2 females labeled same as holotype.
Etymology. The specific epithet is a Latin adjective subrufus (meaning “somewhat red”) in the masculine form and refers to the color of the new species.
Type locality. New Zealand, South Island, West Coast, Upper Buller Gorge, Dublin Terrace .
Recognition. Adults of this species ( Fig. 11A View FIGURE 11 ) are practically indistinguishable from the adults of many Nesamblyops species based on external characters (e.g., Figs. 10D–E View FIGURE 10 ) and are distinguished from them by the structure of the male genitalia.
Description. Large for genus (SBL range 1.80–1.91 mm, mean 1.87± 0.061 mm, n=3).
Habitus. Body form ( Fig. 11A View FIGURE 11 ) markedly convex, elongate ovoid, general proportions slightly wide (WE/SBL 0.37±0.006), head moderately wide relative to pronotum (WH/WPm 0.75±0.025), proportions of pronotum in comparison to elytra average for genus (WPm/WE 0.74±0.005).
Color. Body color rufotestaceous, appendages testaceous.
Prothorax. Pronotum ( Fig. 13D View FIGURE 13 ) moderately long in comparison to elytra (LP/LE 0.39±0.004) and moderately transverse (WPm/LP 1.18±0.018), with lateral margins rectilinear constricted posteriorly (WPm/WPp 1.21±0.029). Anterior angles indistinct, posterior angles obtuse (119–124°), widely rounded. Width between posterior angles greater than between anterior angles (WPa/WPp 0.91±0.046). Basal margin slightly convex.
Elytra. Ovoid, moderately depressed along suture, comparatively long (LE/SBL 0.59±0.002) and moderately narrow (WE/LE 0.63±0.008). Humeri completely rounded. Lateral margins slightly divergent at basal third, subparallel at middle and evenly rounded to apex in apical third.
Male genitalia. Median lobe of aedeagus ( Fig. 16C View FIGURE 16 ) moderately arcuate and barely twisted. Shaft with sides diverging from basal orifice towards middle, then slightly tapering apically. Apex straight, short, enlarged, widely rounded. 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 moderately deviate from typical state. Dorsal field with V-contour small, but distinct, and medial rC-sclerite wide and weakly sclerotized ( Fig. 16C View FIGURE 16 ). Additionally, internal sac has a large scaly membraneous field near apical orifice. Left paramere ( Fig. 16A View FIGURE 16 ) comparatively narrow, with strongly attenuate apex, bearing two long setae. Right paramere ( Fig. 16B View FIGURE 16 ) narrow, long, bearing two long setae, which are shorter than the length of paramere. Ring sclerite not investigated.
Female internal genitalia. Not examined.
Geographical distribution. This species is known from only one locality situated near Manuka Flat in the Upper Buller Gorge, upstream from Inangahua at the northern West Coast region ( Fig. 20 View FIGURE 20 , red circle).
Habitat. All three known to date specimens were collected from leafmould.
Relationships. The external morphology (body proportions, size) suggests relatedness of N. subrufus with N. rotundicollis and N. solitarius . The structure of the parameres (two setae, attenuate apex of left paramere) and the male genitalia (presence of scaly field in apical part of median lobe) support this statement. However, the state of copulatory sclerites of N. subrufus are quite different from those of N. rotundicollis and N. solitarius , but much closer to the copulatory sclerites of the other members of Nesamblyops , thus making a link between two agglomerations of taxa.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Order |
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Family |
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SubFamily |
Trechinae |
Tribe |
Anillini |
SubTribe |
Nesamblyopina |
Genus |