Zeanillus carltoni, Sokolov, Igor M., 2016

Sokolov, Igor M., 2016, A taxonomic review of the anilline genus Zeanillus Jeannel (Coleoptera: Carabidae: Bembidiini) of New Zealand, with descriptions of seven new species, re-classification of the species, and notes on their biogeography and evolution, Zootaxa 4196 (1), pp. 1-37 : 27

Zeanillus carltoni , sp.n.

Figs. 11 G, 13A–D, 14J, 15G, 17A, 18B

Type material. HOLOTYPE, male, in NZAC, board-mounted, dissected, labeled: / New Zealand DN Mt Watkin Road at Mt Watkin 11 Aug 0 7 / Washed soil sample 420m tussockland /.

PARATYPES (3 specimens, 2 dissected), 1 male and 2 females labeled same as holotype.

Specific epithet. The specific epithet honors the surname of Christopher E. Carlton, the Director of Louisiana State Arthropod Museum, well-known specialist in Pselaphinae , for his magnanimous efforts of making the material on New Zealand Anillina available for study

Type locality. New Zealand, South Island, Otago, Mount Watkin .

Recognition. Adults of this species ( Fig. 11 G) are distinguished from other congeners by the characters listed in the species key.

Description. Size. Large for genus (SBL range 1.89–2.01 mm, mean 1.96± 0.050 mm, n=4).

Habitus. Body form slightly convex, slightly ovoid, moderately elongate (WE/SBL 0.35±0.005), head of moderate width for genus compared to pronotum (WH/WPm 0.72±0.014), pronotum of moderate width in comparison to elytra (WPm/WE 0.75±0.018).

Color. Body color rufotestaceous, appendages testaceous.

Prothorax. Pronotum slightly long (LP/LE 0.40±0.012) and moderately elongate (WPm/LP 1.25±0.029), with lateral margins rectilinear constricted posteriorly (WPm/WPp 1.56±0.068). Width between anterior angles moderately greater than between posterior angles (WPa/WPp 1.21±0.034).

Elytra. Slightly depressed along suture, comparatively long (LE/SBL 0.52±0.013) and slightly wide (WE/LE 0.67±0.010). Lateral margins slightly divergent at basal third, subparallel at middle and evenly rounded to apex in apical third.

Male genitalia. Median lobe ( Fig. 13 A) with straight ventral margin and bent downward enlarged apex with tapered rounded tip. Sclerites of internal sac uneven with long, heavily sclerotized ventral and short, weakly sclerotized dorsal branches, united together basally, shorter than half the distance between apical and basal orifices. Left paramere with long apical constriction ( Fig. 13 C). Ring sclerite with transverse handle of moderate length ( Fig. 14 J).

Female internal genitalia. Goncoxite 2 with long ensiform setae ( Fig. 15 G). Spermatheca sclerotized, strikingly elongate, curved, with two indistinctly split compartments ( Fig. 17 A). Spermathecal duct extremely long with numerous coils. Attachments of spermathecal duct and gland to spermatheca moderately distant from each other.

Geographical distribution. This species is known from one locality located in North Otago ( Fig. 18 B, yellow triangle).

Way of life. Specimens were collected in the tussockland close to a hilltop.

Relationships. In the hypertrophy of features of male median lobe and spermatheca, members of this species resembles those of Z. lescheni . However, the ranges of these two species are widely isolated geographically, which suggests only a distant relationships if any. Relationships of Z. carltoni are not postulated here.

Figures

FIGURE 11. Digital images of habitus of Zeanillus species, dorsal aspect. A— Z. phyllobius (NZ, Canterbury, Coopers Knob); B— Z. punctigerus (NZ, Canterbury, Sharplin Falls); C— Z. nunni (NZ, Otago, Highway 87 at Rocklands Road); D— Z. pallidus (NZ, Otago, Taieri Mouth); E— Z. pellucidus (NZ, Otago, Oamaru, Glen Warren Reserve); F— Z. brouni (NZ, Otago, Oamaru, Glen Warren Reserve); G— Z. carltoni (NZ, Otago, Mount Watkin); H— Z. lescheni (NZ, Otago, Waikaia Forest); I— Z. montivagus (NZ, Otago, North Rough Ridge): J— Z. nanus (NZ, Otago, Pisa Range). Scale bar = 1.0 mm.

FIGURE 13. Line drawings of aedeagus of Zeanillus species. Z. carltoni (NZ, Otago, Mount Watkin): A—median lobe, right lateral aspect, B—apical part of median lobe, dorsal aspect, C—left paramere, left lateral aspect, D—right paramere, right lateral aspect; Z. lescheni (NZ, Otago, Waikaia Forest): E—median lobe, right lateral aspect, F—apical part of median lobe, dorsal aspect, G—left paramere, left lateral aspect, H—right paramere, right lateral aspect; Z. nanus (NZ, Otago, Balclutha): I—median lobe, right lateral aspect, J—apical part of median lobe, dorsal aspect, K—left paramere, left lateral aspect, L—right paramere, right lateral aspect; Z. montivagus (NZ, Otago, North Rough Ridge): M—median lobe, right lateral aspect, Napical part of median lobe, dorsal aspect, O—left paramere, left lateral aspect, P—right paramere, right lateral aspect; Z. brouni (NZ, Otago, Oamaru, Glen Warren Reserve): Q—median lobe, right lateral aspect, R—apical part of median lobe, dorsal aspect, S—left paramere, left lateral aspect, T—right paramere, right lateral aspect. Legend: ds—dorsal sclerites; of—ostial field. Scale bar = 0.1 mm.

FIGURE 14. Line drawings of ring sclerite of Zeanillus species, male genitalia, dorsal aspect. A— Z. phyllobius (NZ, Canterbury, Ahuriri Scenic Reserve); B— Z. punctigerus (NZ, Canterbury, Orari Gorge); C— Z. nunni (NZ, Otago, Highway 87 at Rocklands Rd); D— Z. pallidus (NZ, Southland, Thomsons Bush); E— Z. pellucidus (NZ, Otago, Oamaru, Glen Warren Reserve); F— Z. nanus (NZ, Otago, Pisa Range); G— Z. montivagus (NZ, Otago, North Rough Ridge); H— Z. brouni (NZ, Otago, Oamaru, Glen Warren Reserve); I— Z. lescheni (NZ, Otago, Waikaia Forest); J— Z. carltoni (NZ, Otago, Mount Watkin). Legend: hd—handle of ring sclerite. Scale bar = 0.1 mm.

FIGURE 15. Line drawings of right ovipositor sclerite, lateral aspect, of Zeanillus species. A— Z. phyllobius (NZ, Canterbury, Ahuriri Scenic Reserve); B— Z. punctigerus (NZ, Canterbury, Sharplin Falls); C— Z. nunni (NZ, Otago, Woodside Glen); D— Z. pallidus (NZ, Otago, Taieri Mouth); E— Z. pellucidus (NZ, Otago, Oamaru, Glen Warren Reserve); F— Z. brouni (NZ, Otago, Oamaru, Glen Warren Reserve); G— Z. carltoni (NZ, Otago, Mount Watkin); H— Z. lescheni (NZ, Otago, Waikaia Forest); I— Z. montivagus (NZ, Otago, North Rough Ridge); J— Z. nanus (NZ, Otago, Balclutha). Legend: es—ensiform seta; gc 1 — gonocoxite 1; gc 2 — gonocoxite 2; lt—laterotergite; ns—nematiform seta. Scale bar = 0.05 mm.

FIGURE 17. Line drawings of spermatheca, spermathecal duct, and spermathecal gland of Zeanillus species. A— Z. carltoni (NZ, Otago, Mount Watkin); B— Z. lescheni (NZ, Otago, Waikaia Forest); C— Z. nanus (NZ, Otago, Balclutha), the structure is the same as in Fig. 16 H and is repeated for purposes of comparison among species. Legend: sd—spermathecal duct. Scale bar = 0.1 mm.

FIGURE 18. Map of southern half of South Island, New Zealand, showing positions of locality records for the species of Zeanillus. A: white circles, Z. phyllobius; green circles, Z. punctigerus; red circles, Z. nunni; blue diamond, Z. pellucidus; green diamond, Z. pallidus. B: white triangles, Z. brouni; green triangles, Z. nanus; red triangles, Z. lescheni; yellow triangle, Z. carltoni; black triangle, Z. montivagus. Elevation scale bars are given in meters.