A review of the genus Smicronyx Schoenherr (Coleoptera, Curculionidae, Curculioninae) in tropical Africa
Author
Haran, Julien
text
Zootaxa
2018
2018-10-31
4508
2
267
287
journal article
28045
10.11646/zootaxa.4508.2.9
72412182-ef97-4b7a-9a44-54d42ba532a1
1175-5326
2607088
47E77D58-680A-411E-884F-955EE996F42F
Smicronyx pauperculus
Wollaston, 1864
Figs
1I
,
4A
,
5I
Smicronyx pauperculus
Wollaston, 1864
: 317
Material examined.
Lectotype
♀
[here designated]
: ‘Type’ ‘
Smicronyx pauperculus
Woll’ ‘
Canary Islands
. Teneriffe. T.V. Wollaston Coll. B. M.
1864-80
’ ‘Standing in Wollaston coll. as
Smicronyx pauperculus
’ (fitted with a red
lectotype
label: “
LECTOTYPE
/
Smicronyx pauperculus
/
Wollaston, 1864
/ Haran J. des. 2018”, BMNH).
Paralectotypes
[here designated]
. Data as for
Lectotype
(
1♂
,
1♀
, fitted with a red
Paralectotype
label: “
PARALECTOTYPE
/
Smicronyx pauperculus
/
Wollaston, 1864
/ Haran J. des. 2018”, BMNH); Grand Canary Island (
1♀
, fitted with a red
Paralectotype
label: “
PARALECTOTYPE
/
Smicronyx pauperculus
/
Wollaston, 1864
/ Haran J. des. 2018”, BMNH).
Other material.
Burkina Faso
, Nahouri, Nazinga forest, Barka,
265 m
,
11°08’30’’N
01°36’35’’O
,
24.vii.2006
, Sudanian savanna with trees, light trap, F. & S. Génier,
2006-62
(
2♀
, CMNC);
Nahouri
,
Nazinga forest
,
Boulieselo
,
310 m
,
11°11’50’’N
001°35’09’’O
,
27.vii.2006
,
Sudanian
savanna with trees,
light trap
,
F. & S. Génier
,
2006-82
(
1♀
,
CMNC
)
;
Nahouri
,
Nazinga forest
,
Naguio
,
270 m
,
11°07’52’’N
001°34’38’’O
,
24.vii.2006
,
Sudanian
savanna with trees,
light trap
,
F. & S. Génier
,
2006-66
(
1♀
,
CMNC
)
;
Nahouri
,
Nazinga forest
,
Akwazena
,
275 m
,
11°09’24’’N
001°36’44’’O
,
21.vii.2006
,
Sudanian
savanna with trees,
light trap
,
F. & S. Génier
,
2006-53
(
1♀
,
CMNC
)
;
Loroum
,
Toulfé
,
300 m
,
13°53’43’’N
001°52’25’O,
16.vii.2006
,
Sudanian
savanna with trees,
light trap
, F. & S.
Génier
,
2006-40
(
2♂
,
CMNC
)
;
Kenya
,
Nairobi
,
1660 m
,
xi.1911
, Alluaud &
Jeannel
leg. (
2♂
,
MNHN
;
1♂
,
1♀
,
MNHN
;
3♂
,
MNHN
)
;
Nairobi
, 1903,
Alluand
leg. (
1♂
,
MNHN
)
.
Mali
,
Dogo
,
18.vii.1950
,
light trap
(
1♀
,
MNHN
)
;
Kemleton
,
12.xi.1956
, PB.
de Miré
leg. (
1♂
,
MNHN
)
;
Chizeh
(
Country
?), ix. (
Year
?), (
1♂
,
MNHN
)
.
Senegal
,
Saint-Louis
,
Richard-Toll
,
16°26’25’’N
015°39’29’’O
,
9m
,
28.viii.2009
,
Sahelian
zone tigred bush,
light trap
,
F. Génier
,
2009-36
(
1♂
,
1♀
,
CMNC
)
.
Tanzania
,
Mkonga Forest Reserve South Pare Mountains
, S04°07’48’’; E37°45’49’’,
1.xii.2011
,
light trap
, R. Smith &
H. Takano
leg. (
1♀
,
BMNH
)
;
Ndarakwai
, W
Kilimanjaro
, S03°00’49’’; E36°59’23’’,
5–7.iv.2012
, 1310 m,
light trap
, R. Smith &
H. Takano
leg. (
7♂
,
3♀
, BMNH)
;
Orekeryan
,
Mt. Longido
, S02°43’47’’; E36°43’26’’,
8.xi.2011
,
light trap
, R. Smith &
H. Takano
leg. (
1♂
,
BMNH
)
.
Zambia
,
2.5 km
E Namushakende
,
1100 m
,
15°26’40’’S
23°14’57’’E
,
30.xi.2010
,
Zambezian
Cryptosepalum
dry forest,
light trap
,
F. Génier
, 2010-04 (
1♂
,
CMNC
)
.
Diagnosis
. Body length 1.9–2.0 mm.
Colour
. Body integument reddish, except rostrum, antennae, prothorax, suture of elytra and tarsi, which are usually black, some rare specimens entirely black with whitish vestiture; vestiture of elytra generally consisting of elongate brownish scales, recumbent, not concealing integument, and whitish scales, thicker, forming transverse patches.
Head
. Rostrum moderately and regularly downcurved in lateral view, longer than head capsule + prothorax.
Prothorax
. Quadrate (w/l ratio: 1), sides rounded in basal half, constricted apically, widest slightly behind middle, with median line of whitish scales, mostly visible near scutellum.
Elytra
. Subparallel in basal two thirds (w/l ratio: 0.65), rounded toward apex in apical third.
Legs
. Femora moderately clavate, armed with a distinct ventral tooth, tibiae straight.
Genitalia
. Penis moderately elongate (w/l ratio: 0.60), sides straight, subparallel, apex truncate, moderately and regularly curved in lateral view (
Fig.
5I
).
Life history
. This species is known to develop on flowers of
Cuscuta campestris
Yunck
(
Anderson 1974
, Haran
et al
. 2017) developing on plants of open and disturbed agricultural areas. It is often recorded by light trapping. In sub-Saharan Africa, adults were collected in April, July, August, September, November and December.
Distribution
.
Smicronyx pauperculus
is widely distributed around the Mediterranean basin (
Caldara 2013
, Haran
et al
. 2017). In sub-Saharan Africa, it has been recorded in West (
Mali
) and East (
Kenya
,
Tanzania
) Africa.
Discussion.
This species is close to
S. gossypii
; see discussion on that species for diagnostic characters. It is also close to
S. rufus
, but the integument of the latter species is entirely red (head and prothorax dark in fullysclerotized specimens of
S. pauperculus
). See discussion on
S. rufus
for the genetic divergence between the two species.