Zeanillus brouni, 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 : 24-27

Zeanillus brouni , sp.n.

Figs. 4 F, 6F, 7F, 10EKQ, 11F, 13Q–T, 14H, 15F, 16F, 18B

Type material. HOLOTYPE, male, in NZAC, board-mounted, undissected, labeled: / New Zealand DN Glen Warren Res Oamaru 19 Jan 0 7 / Washed soil sample.

PARATYPES (55 specimens, 7 dissected), 8 males and 3 females labeled same as holotype; 1 male and 1 female labeled: / New Zealand: DN, Glen Warren Reserve , Oamaru, 150m, washed soil sample, dry coastal broadleaf forest, H45/864483 J.Nunn 12 Jan 2008 / ; 9 males and 4 females labeled: / New Zealand DN Glen Warren Res Oamaru 4 Jun 0 6 / In soil sample from forest remnant / ; 18 males and 8 females labeled: / New Zealand DN Roy Cooper Res Oamaru 2 Aug 0 7 / Washed soil sample broadleaf forest / ; 1 male and 1 female labeled: / New Zealand DN Roy Cooper Res Oamaru 23 Aug 0 2 / In earthy forest litter / ; 1 male labeled: / New Zealand: DN, Allison Reserve , Akatore, 150m, washed soil sample, broadleaf /podocarp forest, M31/602701 J.Nunn 2 Dec 2007.

Specific epithet. The specific epithet honors the surname of Thomas Broun, famous New Zealand coleopterist, the author of thousands of new species, including the first descriptions of New Zealand Anillina

Type locality. New Zealand, South Island, Otago, Oamaru , Glen Warren Reserve.

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

Description. Size. Medium to large for genus (SBL range 1.73–1.95 mm, mean 1.81± 0.054 mm, n=20).

Habitus. Body form slightly convex, ovoid, moderately elongate (WE/SBL 0.36±0.011), head of moderate width for genus compared to pronotum (WH/WPm 0.72±0.015), pronotum rather narrow in comparison to elytra (WPm/WE 0.72±0.018).

Color. Body color rufotestaceous, appendages testaceous.

Prothorax. Pronotum slightly long (LP/LE 0.41±0.008) and moderately elongate (WPm/LP 1.25±0.026), with lateral margins rectilinear constricted posteriorly (WPm/WPp 1.56±0.068). Width between anterior angles moderately greater than between posterior angles (WPa/WPp 1.16±0.058).

Elytra. Slightly depressed along suture, comparatively long (LE/SBL 0.52±0.013) and moderately wide (WE/ LE 0.70±0.025). Lateral margins slightly divergent at basal third, subparallel at middle and evenly rounded to apex in apical third.

Male genitalia. Median lobe ( Fig. 13 Q) with convex ventral margin and rather long apex with tapered narrowly rounded tip. Sclerites of internal sac slightly sclerotized, separate, long, almost equal half of the length between apical and basal orifices. Left paramere with apical constriction ( Fig. 13 S). Ring sclerite without visible handle ( Fig. 14 H).

Female internal genitalia. Goncoxite 2 with short ensiform setae ( Fig. 15 F). Spermatheca sclerotized, slightly elongate, comparatively wide, with two compartments ( Fig. 16 F). Spermathecal duct short and without coils. Attachments of spermathecal duct and gland to spermatheca close together.

Geographical distribution. This species is known from two distant coastal forest localities of North and South Otago: majority of specimens were collected in Oamaru (Glen Warren Reserve), and only one specimen is known from the Coastal Otago Hills (Alison Reserve). The last locality needs confirmation ( Fig. 18 B, white triangles).

Way of life. Specimens were collected in the coastal dry broadleaf forest and in the Podocarp/broadleaf forest.

Relationships. In the structure of male median lobe, members of this species are distinct from the other members of subgenus. The shape of round sclerite is similar to the allopatric interior species Z. lescheni and Z. montivagus . Also, females of Z. brouni resemble those of Z. montivagus in the shape of spermatheca (i.e., in having two compartments with the larger part short and wide). These morphological similarities suggest that Z. brouni shares a common ancestry with Z. montivagus and Z. lescheni .

Figures

FIGURE 4. SEM illustrations of labial complex, ventral aspect, of Zeanillus species. A— Z. phyllobius; B— Z. punctigerus; C— Z. pallidus; D— Z. pellucidus; E— Z. lescheni; F— Z. brouni. Legend: alms—anterolateral mental seta; gsc—glossal sclerite; lms—lateral mental seta; lss—lateral submental seta; m—mentum; mp 3 — maxillary palpomere 3; mp 4 — maxillary palpomere 4; mt—mental tooth; mss—mental-submental suture; pms—paramedial mental seta; prss—primary basal submental seta; sm—submentum. Scale bars = 0.1 mm.

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 16. Line drawings of spermatheca, spermathecal duct, and spermathecal gland 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. pellucidus (NZ, Otago, Oamaru, Glen Warren Reserve); E— Z. pallidus (NZ, Otago, Taieri Mouth); F— Z. brouni (NZ, Otago, Oamaru, Glen Warren Reserve); G— Z. montivagus (NZ, Otago, North Rough Ridge); H— Z. nanus (NZ, Otago, Balclutha). Legend: sd—spermathecal duct; sg—spermathecal gland; sp—spermatheca. Scale bar = 0.05 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.