Revision of the Afrotropical flea beetle subgenus Blepharidina s. str. Bechyné (Coleoptera, Chrysomelidae)
Author
Iannella, Paola D’Alessandro Mattia
Author
Biondi, Maurizio
text
Zootaxa
2019
2019-01-16
4545
1
journal volume
27649
10.11646/zootaxa.4545.1.2
d8036fa9-32eb-4c5f-bdb2-428d22250ea8
1175-5326
2618635
1D2EC333-517D-4FC1-A0AA-61EDD8BE8BEE
Blepharidina himba
sp. nov.
(
Figs 7
,
21
,
43
,
68
)
urn:lsid:zoobank.org:act:
AA2504B9-0A6D-4CBF-9B93-DD64F2521EC0
Type material.
Holotype
♂
: “
Kaokoland
(
Namibia
),
4 km
E Orumana
,
18°1'S
13°50'E
,
24.ii.1990
,
E. Marais
&
J. Irish
leg.” (
ZMHB
).
Diagnosis.
Blepharidina himba
sp. nov.
shows a clear affinity with
B. matabelelandensis
sp. nov.
, with which it shares similar size, habitus, and color pattern (
Figs 7
,
14
) and a very slender aedeagus, with laterally widely rounded apical part in ventral view (
Figs 43
,
50
). However,
B. himba
sp. nov.
can be easily distinguishable from
B. matabelelandensis
sp. nov.
by: the lighter integuments; the different arrangement of the pronotal punctures (
Figs 21, 24
), with two lateral groups and an elongate medial group (three lateral groups and a small basal medial group in
B. matabelelandensis
sp. nov.
); the aedeagus tapered from base to subapical part (fusiform in
B. matabelelandensis
sp. nov.
) (
Figs 43
,
50
).
Description of the
holotype
(
♂
). Body elliptical-elongate, rather convex (
Fig. 7
); LB =
7.31 mm
; maximum pronotal width (WP =
2.81 mm
) in basal third; maximum elytral width (WE =
3.81 mm
) in middle. Head brown with yellowish antennae; pronotum yellow with brown patches mostly on groups and lines of punctures; elytra mostly yellow, but blackish on striae of punctures and part of interstriae; legs brown, with paler tarsi. Head distinctly pubescent, roughly and densely punctate; frontal grooves short, distinctly impressed near upper ocular margin; frontal tubercles small, flat, paler than head; interantennal space distinctly wider than length of first antennomere; upper interocular space wider than transverse ocular width (
Fig. 21
); antennae about as long as half body length (LAN =
3.63 mm
; LAN/LB = 0.50); LA: 100:39:67:83:83:78:78:72:72:72:83. Pronotum (
Fig. 21
) subrectangular, distinctly transverse (LP =
1.56 mm
; WP/LP = 1.80), with clearly sinuate lateral margin; anterior margin slightly thicker than basal margin, and clearly sinuate laterally; anterior angles distinctly prominent and slightly rounded anteriorly, pointed laterally; pronotal surface with lines and groups of differently sized punctures, also with a longitudinal line of punctures in middle; pronotal base with two lateral, distinctly impressed longitudinal striae. Scutellum brown, subrounded, moderately elongate. Elytra moderately elongate (LE =
5.69 mm
; WE/LE = 0.67; LE/LP = 3.64), subparallel laterally, jointly rounded and entirely covering pygidium posteriorly; punctation deeply impressed, arranged in 9 (+ 1 scutellar) regular rows; interstriae distinctly carinate laterally and posteriorly. First pro- and mesotarsomeres distinctly dilated; tarsal claws bifid. Ventral parts brown; last abdominal ventrite without distinctive preapical impressions. Aedeagus (LAED =
3.50 mm
; LE/LAED = 1.63) (
Fig. 43
) in ventral view slender and tapered from base to subapical part; apical part laterally widely rounded, with a small median tooth; ventral sulcus deep, open towards basal part; in lateral view, aedeagus straight in basal 2/3s, then slightly curved dorsally, with apex ventrally bent; dorsal ligula connected to about apical fourth, with slightly carinate basal surface.
Etymology.
The female specific epithet is after Himba people, who inhabit the north-western part of
Namibia
, where the species was collected.
Distribution.
Namibia
(
Fig. 68
). Possibly Central Afrotropical (CAT) chorotype.
Ecological notes.
Not available. The collection site falls within the area of Mopane Savanna vegetation (belonging to the Tropical Lowland Grassland, Savanna & Shrubland formation).