Apionidae, Nanophyidae, Brachyceridae and Curculionidae except Scolytinae (Coleoptera) from Socotra Island
Author
Colonnelli, Enzo
text
Acta Entomologica Musei Nationalis Pragae
2014
2014-12-30
54
295
422
journal article
10.5281/zenodo.5313125
0374-1036
5313125
0C315AB4-D662-4A0A-8B18-D3683DDAE7B4
Socotracerus delumbis
sp. nov.
(
Figs 79−81, 83
)
Type material.
HOLOTYPE
: J (
NMPC
), ‘
Yemen
,
Socotra Island
//
Firmihin
,
400-500 m
// N 12°28′.27″, E 54°0′54″ //
22-25.vi.2009
//
L. Purchart
&
J. Vybíral
lgt.’.
PARATYPES
: 3 JJ
5 ♀♀
, same label data as holotype (6
NMPC
, 2
ECRI
);
1 ♀
, ‘
Yemen
,
Socotra Island
E // Firmihin plato,
400-500 m
// N 12°28′46″, E 54°00′49″ //
V. Hula
&
J. Niedobová
leg. //
18-19.vi.2010
’ (
NMPC
);
1 ♀
, ‘
Yemen
, Soqotra Is.; // 1.2.
xii.2003
// Dixam plateau; Sirhin area, // N
12°31′08″ E
53°59′09″ //
812 m
[GPS]; Jan Farkač lgt.’, ‘
Yemen
- Soqotra // 2003 // Expedition; Jan Farkač, // Petr Kabátek & David Král’ (
NMPC
);
1 ♀
, ‘Socotra (
YE
) // Dixam //
28.I.2008
-
R. Sindaco’
(
MCCI
);
1 ♀
, ‘
Yemen, Socotra
// Dixam plateau Firmihin // (
Dracaena
forest)
490 m
//
12°28.6′N
,
54°01.1′E
//
15-16.xi.2010
//
P. Hlaváč
leg.’ (
NMPC
); 1 J, ‘
Yemen, Socotra Island
//
Deiqub cave
,
12.vi.2012
// cave &
Croton socotranus
+
//
Jatropha unicostata
shrubland; //
12°23.1′N
,
54°00.9′E
, 115 m’, ‘Socotra expedition 2012 //
J. Bezděk
,
J. Hájek
,
V. Hula
, //
P. Kment
,
I. Malenovský
, //
J. Niedobová
&
L. Purchart
leg.’ (
NMPC
).
Description.
Male
holotype
.
Body length
5.2 mm
. Pitchy-brown, somewhat shining, antennae and tarsi dark ferruginous, apical comb of setae of tibiae and claws honey-red. Dorsal side rather sparsely covered by curved recumbent brownish and golden hair-like scales, intermingled with almost recumbent whitish to golden-greenish capitate scales which on elytral intervals are erect and give rise to vague patches and faint longitudinal stripes along suture and interval V on elytral declivity. Ventral surface with sparse erect golden setae (
Figs 79–80
).
Head.
Rostrum 0.85 times as long as wide, sides barely converging from base to moderately protruding pterygia. Epifrons slightly depressed, at narrowest point hardly narrower than rostrum between antennal insertions, with barely visible trace of dorsal carina, sides with weak smooth keel. Epistome V-shaped and separated from epifrons by thin carina. Scrobes quite short. Head separated from rostrum by transverse weak sulcus, distance between eyes greater than that between antennal insertion, space between eyes flat and longitudinally sulcate, vertex convex, basally finely strigose and apically punctured, temples shorter than greater diameter of eye and slightly widening posteriorly. Eyes large, elliptical and convex. Antennae rather thin; scape slightly curved and gradually clubbed; funicular antennomere I 1.17 times longer and hardly wider than II, antennomere II curved and apically widened at inner margin, antennomeres II to VII barely diminishing in length, all longer than wide; club fusiform elongate, little shorter than three preceding antennomeres.
Pronotum
1.14 times broader than long, widest just apicad of middle, slightly convex dorsally in lateral view; anterior margin as wide as basal one; sides rounded; disc with irregular smooth flattened granules becoming smaller and denser on sides and with smooth carina in middle. Scutellum barely visible.
Elytra
elongate oval, 1.54 times longer than wide, 1.62 times as wide as pronotum, moderately convex on basal two thirds, apical declivity almost perpendicular; striae formed by large subquadrate punctures; intervals not wider than striae, subrugulose and little convex.
Legs
rather elongate; femora clubbed, edentate, sparsely clothed by recumbent and slightly erect whitish setae, basal third of profemora and basal 4/5 of mesofemora with long erect setae; protibiae quite strongly curved on apical half, their inner margin setose and incised on apical half and at base of incision with tuft of long setae, mesotibiae moderately so and also with long setae, metatibiae with their apical 2/3 curved and a little twisted, side facing elytra with smooth and bare surface; tarsi quite short with erect thin microsetae and stiff erect longer setae, tarsomere I longer and slightly wider than second which is longer than wide, tarsomere III bilobed and as long as wide, tarsomere IV projecting from third by slightly more than its length, claws fused in basal half.
Ventral side.
Metaventrite and abdominal ventrite I with large rather deep common impression, rest of ventrites convex in middle.
Variability.
Other males are almost identical to the
holotype
. Elytra of females are broadly oval and strongly convex on disc (
Fig. 81
), their legs are lacking special features and their abdomen is not impressed. The vestiture is somewhat variable, since in some
paratypes
elytral spots are more evident. In fully mature specimens the colour of the integument is piceous, and tibiae and antennae are darker than those of the
holotype
.
Male genitalia.
Aedeagus as depicted in
Fig. 83
.
Body length
4.1–5.5 mm
.
Differential diagnosis.
This species is easy to identify from
Socotracerus contortipes
sp. nov.
described below already by its piceous colour and vestiture formed by scales instead of setae.
Etymology.
The species name, Latin adjective
delumbis
(-
is
, -
e
), meaning ‘lame’, was chosen in reference to the bent male tibiae of this new species.
Distribution.
Endemic to
Socotra Island
.