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
Author
Sokolov, Igor M.
text
Zootaxa
2016
4196
1
1
37
journal article
37798
10.11646/zootaxa.4196.1.1
b7651a7b-df24-4347-9585-0633b88dba51
1175-5326
167648
026D88BD-86C0-4811-814A-CB5CACB3104F
Zeanillus lescheni
,
sp.n.
Figs. 1
E, 2D, 3G–H, 4E, 5E, 6E, 7G, 8D, 9D, 10JP, 11H, 13E–H,
14I
, 15H, 17B, 18B
Type
material.
HOLOTYPE
, male, in
NZAC
, board-mounted, undissected, labeled: /
New Zealand
CO Whitecoomb Rd
2km
N of
Post Office Ck
/ Washed soil sample, beech forest
25 Apr
0 7 /.
PARATYPES (13 specimens, 4 dissected), 1 male labeled same as holotype;
1 male
and
1 female
labeled: /
New Zealand
CO
Piano Flat Waikaia Forest
25 Apr
0 7 /
Washed
soil sample beech forest /
;
3 males
and
3 females
labeled: /
New Zealand
CO
2km
north of
Post Office Ck Waikaia Forest
/ Washed soil sample, beech forest 25/04/ 0 7 /
;
1 male
labeled: /
New Zealand
CO
Waikaia Forest
Whitecoomb Rd
at
Post Office Ck
25 Apr
0 7 /
Washed
soil sample /
;
2 males
labeled: /
New Zealand
CO
Waikaia Forest
Whitecoomb Rd
at
Post Office Ck
/
Washed
soil sample
Nothophagus forest
25 Apr
0 7 /
;
1 male
labeled: /
New Zealand
CO Whitecoomb Rd
4km
N
Post Office Ck
/
Washed
soil sample
25 Apr
0 7 /.
Specific epithet.
The specific epithet honors the surname of Richard A.B. Leschen, coleopterist of Landcare Research and Curator of the
New Zealand
Arthropod Collection, who loaned the specimens of Anillina under his care for this study.
Type
locality.
New Zealand
,
South Island
,
Southland
,
Waikaia Forest Conservation area
.
Recognition.
Adults of this species (
Fig. 11
H) are distinguished from other congeners by the characters listed in the species key.
Description.
Size. Medium to large for genus (SBL range
1.72–1.98 mm
, mean 1.84±
0.080 mm
, n=14).
Habitus. Body form slightly convex, ovoid, moderately elongate (WE/SBL 0.37±0.014), head of moderate width for genus compared to pronotum (WH/WPm 0.72±0.015), pronotum rather narrow in comparison to elytra (WPm/WE 0.71±0.017).
Color. Body color rufotestaceous, appendages testaceous.
Prothorax. Pronotum slightly long (LP/LE 0.40±0.009) and moderately elongate (WPm/LP 1.28±0.031), with lateral margins rectilinear constricted posteriorly (WPm/WPp 1.52±0.070). Width between anterior angles moderately greater than between posterior angles (WPa/WPp 1.15±0.045).
Elytra. Slightly depressed along suture, comparatively long (LE/SBL 0.53±0.012) and moderately wide (WE/ LE 0.69±0.019). Lateral margins slightly divergent at basal third, subparallel at middle and evenly rounded to apex in apical third.
Male genitalia. Median lobe (
Fig. 13
E) with straight ventral margin and enlarged apex in dorsal projection. Sclerites of internal sac sclerotized, unequal in length, with long, thick ventral and short, narrow dorsal branches, united basally, almost equals to the half of the distance between apical and basal orifices. Left paramere with long apical constriction (
Fig. 13
G). Ring sclerite without visible handle (
Fig.
14
I).
Female internal genitalia. Goncoxite 2 with short ensiform setae (
Fig. 15
H). Spermatheca sclerotized, gigantic, elongate and curved, with two compartments (
Fig. 17
B). Spermathecal duct short and with few coils. Attachments of spermathecal duct and gland to spermatheca at a moderate distance from each other.
Geographical distribution.
This species is known from several localities in the Waikaia Forest at the upper course of the Waikaia River of
Southland
(
Fig. 18
B, red triangles).
Way of life.
Specimens were collected from soil in a beech (
Nothofagus
) forest.
Relationships.
Males of this species are distinct from those of other members of subgenus in the structure of the median lobe. Hypertrophy of the apex of male median lobe and great increase in the size of spermatheca are shared with members of
Z. carltoni
. Males of
Z. lescheni
are also similar to those of the interior
Z. montivagus
and coastal
Z. brouni
in the shape of round sclerite.. Based on the latter similarity, I suggest that
Z. lescheni
shares a common ancestry with the latter two species.