A revision of the genus Seeversiella Ashe, 1986 (Coleoptera: Staphylinidae: Aleocharinae)
Author
Gusarov, Vladimir I.
text
Zootaxa
2003
142
1
102
journal article
51371
10.5281/zenodo.156420
76c096e3-d27c-4abc-a504-a62ae8c7ba92
11755326
156420
12.
Seeversiella similis
Gusarov
,
sp. n.
(
Figs. 161174
)
FIGURES 161164
. Abdominal segment 8 of
Seeversiella similis
Gusarov
,
sp. n.
(161162, holotype; 163164, paratype from La Tigra, Honduras). 161 – male tergum 8; 162 – male sternum 8; 163 – female tergum 8; 164 – female sternum 8. Scale bar 0.2 mm.
Type
material.
Holotype
,,
HONDURAS
: Francisco Morazán:
21.3 km
N Teguicigalpa, La Tigra,
2100 m
,
14°12'N
86°06'W
, forest litter (R.S.Anderson),
7.vi.1994
(
KSEM
).
Paratypes
:
HONDURAS
: Francisco Morazán:
4, same data as the
holotype
; 2, ditto but
15.viii.1994
; 2, 4, ditto but
22.2 km
N Teguicigalpa,
2030 m
,
15.viii.1994
(all
KSEM
).
Diagnosis.
Seeversiella similis
can be distinguished from other species of
Seeversiella
by having brown body; temples 1.41.8 times as long as eyes; glossy pronotum with weak isodiametric microsculpture; elytra as long or slightly shorter than pronotum (elytral length to pronotal length ratio 1.00.9); reduced wings; tergum 8 with four pairs of macrosetae; the distinct shape of aedeagus (
Figs. 165173
) and spermatheca (
Fig. 174
).
FIGURES 165168
. Aedeagus of
Seeversiella similis
Gusarov
,
sp. n.
(holotype). 165 – median lobe, parameral view; 166 – apex of median lobe, parameral view; 167 – median lobe, lateral view; 168 – apex of median lobe, lateral view. Scale bar 0.2 mm (165, 167), 0.1 mm (166, 168).
Seeversiella similis
differs from closely related
S. badia
in that apex of median lobe in lateral view lacks clear emargination on parameral side (
Figs. 167168
; 156157).
Seeversiella similis
can be distinguished from
S. globicollis
and the other similar species (3, 58, 10) with long elytra and weak pronotal microsculpture by the combination of the following characters: distal sclerites of internal sac poorly sclerotized, not dentiform or hookshaped and have small spicules (
Fig. 173
); apex of median lobe in lateral view widened subapically and not emarginate on parameral side (
Figs. 167168
); spermatheca Sshaped with umbilicus facing laterally (
Fig. 174
).
Description.
Length
2.32.8 mm
, pronotal width
0.480.54 mm
. Body brown to dark brown with lighter elytra, legs brown to yellowish brown.
In all character states
S. similis
is very similar to
S. globicollis
, but differs in the shape of the aedeagus and spermatheca as described in the diagnosis.
In males posterior angles of tergum 3 projecting as spines, up to 1 time as long as tergum 3 (measured medially), tergum 7 with medial carina along midline, the carina up to 2/3 as long as tergum length.
Aedeagus as in
Figs. 165173
.
Spermatheca as in
Fig. 174
.
FIGURES 169174
. Genitalia of
Seeversiella similis
Gusarov
,
sp. n.
(171, 173, holotype; 169170, 172, 174, paratypes from La Tigra, Honduras). 169 – everted internal sac, parameral view; 170 – medial lamellae, parameral view; 171 – apex of left paramere; 172 – everted internal sac, lateral view; 173 – details of internal sac retracted into median lobe, lateral view; 174 – spermatheca. Scale bar 0.2 mm (169, 172173), 0.1 mm (170171, 174).
CP – copulatory piece; LD – lateral diverticulum of internal sac.
Distribution.
Known from
Honduras
(
Fig. 387
).
Natural History.
Seeversiella similis
was collected in forest litter at altitude of
2000 2100 m
.