Afrotropical Centistidea Rohwer, 1914 (Hymenoptera, Braconidae) with description of four new speciesAuthorLiu, Zhen0000-0002-8670-0205Changde Key Innovation Team for Wetland Biology and Environmental Ecology, College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde 415000, China & Natural History Museum, London, UKAuthorPolaszek, Andrew0000-0002-7171-3353Natural History Museum, London, UKtextZooKeys20242024-10-22121683100journal article10.3897/zookeys.1216.13312704C335D9-5252-499F-A004-7C9C2220C88CCentistidea longipedes
Liu & Polaszek
sp. nov.Fig. 4Diagnosis.
Body length
2.2 mm
, dark brown; head 1.7 × as wide as long, 1.3 × wider than mesoscutum; eyes 1.5 × longer than temple in dorsal view; temple with transverse wrinkles in between, not constricted behind eyes in dorsal view; distance between fore and a hind ocellus 1.2 × longer than minor axis of a hind ocellus,
POL
:
OD
:
OOL
= 1.2: 1.0: 3.2; frons flat and nearly polished except extremely fine transverse wrinkles; vertex between eye and hind ocellus shiny and sculptured as temple; face shiny, with extremely fine setose punctures, indistinctly convex medially, transverse, 1.4 × wider than high; clypeus 2.2 × wider than medial length, nearly polished; antenna 1.2 × longer than body length, with 1
st
, 2
nd
, penultimate and ultimate flagellomeres 6.3, 6.7, 3.8, and 4.6 × longer than wide, 1
st
1.1 × longer than 2
nd
; mesoscutum with superficial and extremely small punctures, intervals with extremely fine wrinkles, notauli obvious, crenulated to anterior 1 / 3; scutellar sulcus straight and crenulated; medio-posterior depressions on scutellum large and oblong, virtually touching each other; propodeum with distinct median carinae just reach costulae, anterior parts with indistinct punctures and several short rugae alongside median carinae, 2.5 × longer than median length of metanotum, posterior parts polished; hind leg extremely long, 2.6 × than metasoma; pterostigma narrow, 3.7 × as long as its widest part; vein 1 -
R
1 0.3 of length of pterostigma;
T
1 poorly defined, 2.8 × longer than its maximum width;
T
2 1.2 × wider than median length;
T
3 0.9 × length of
T
2, not longitudinally striate.
Description.Male.
Body length
2.2 mm
, fore wing length
2.6 mm
(Fig.
4 a
).
Centistidea longipedes
Liu & Polaszek
,
sp. nov.
, male, holotype
a
habitus, lateral view
b
head, dorsal view
c
head, frontal view
d
antenna
e
mesosoma, dorsal view
f
mesosoma, lateral view
g
fore wing
h
hind wing
i
hind leg
j
propodeum and T 1
k
metasoma, dorsal view.
Head
.
Transverse in dorsal view, 1.7 × as wide as long, 1.3 × wider than mesoscutum. Eyes 1.5 × longer than temple in dorsal view (Fig.
4 b
). Temple slightly shiny, small setose punctures with transverse wrinkles in between, not constricted behind eyes in dorsal view. Ocelli small, distance between fore and a hind ocellus 1.2 × longer than minor axis of a hind ocellus,
POL
:
OD
:
OOL
= 1.2: 1.0: 3.2. Frons flat and nearly polished except extremely fine transverse wrinkles. Vertex between eye and hind ocellus shiny and sculptured as temple. Face (Fig.
4 c
) shiny, with extremely fine setose punctures, indistinctly convex medially, transverse, 1.4 × wider than high. Clypeus 2.2 × wider than medial length, nearly polished. Length of malar space 1.6 × basal width of mandible. Antenna (Fig.
4 d
) 1.2 × longer than body length, with scape, pedicel and 1
st
, 2
nd
, penultimate and ultimate flagellomeres 2.3, 1.9, 6.3, 6.7, 3.8 and 4.6 × longer than wide, 1
st
1.1 × longer than 2
nd
, flagellomeres gradually shortened to apex.
Mesosoma
.
Length: width: height = 10: 4.6: 6.5. Mesoscutum (Fig.
4 e
) shiny with superficial and extremely small punctures, intervals with extremely fine wrinkles, notauli obvious, crenulated to anterior 1 / 3. Scutellar sulcus slightly curved, crenulated. Scutellum shiny, sculptured as mesoscutum, medio-posterior depressions large and oblong, virtually touching each other. Propodeum (Fig.
4 j
) highly shiny, with distinct median carinae just reaching costulae, anterior parts with indistinct punctures and several short rugae alongside median carinae, 2.5 × longer than median length of metanotum, posterior parts polished. Mesopleuron (Fig.
4 f
) highly polished, impunctate.
Legs
.
Hind leg (Fig.
4 i
) remarkedly long, 2.6 × than metasoma. Hind femur 4.1 × as long as its widest part. Length of hind femur: tibia: basitarsus = 2.2: 3.2: 1.0. Basitarsus of hind leg 0.6 × as long as tarsomeres 2–5.
Wings
.
Fore wing (Fig.
4 g
): pterostigma narrow, 3.7 × as long as its widest part; vein 1 -
R
1 0.3 of length of pterostigma; vein r: 2 - SR: 2 - M = 1.0: 5.3: 3.4, 1 - SR: 1 - M = 1.0: 4.0, 1 - CU 1: 2 - CU 1 = 1.0: 2.2; first discal cell of fore wing nearly 1 / 5 wider than high. Hind wing (Fig.
4 h
): vein M + CU: 1 M: 1 r-m = 1.5: 1.9: 1.0.
Metasoma
.
Indistinctly longer than mesosoma.
T
1 (Fig.
4 k
) highly polished, poorly defined, spatula-shaped, 2.8 × longer than its maximum width, distinctly narrowed anterior-medially.
T
2 1.2 × wider than median length;
T
3 0.9 × length of
T
2, smooth without longitudinal striae.
Colour
.
Dark brown (Fig.
4 a
). Palpi and spurs honey yellow. Antenna dark brown. Legs yellow, except apical 1 / 3 of hind tibia and hind tarsus brown. Wing membrane hyaline, pterostigma yellow-brown, vein r, 2 - SR, 1 - SR, 1 - M and 1 - CU 1 yellow-brown, other veins pale.
Female.
Unknown.
Host.Unknown.Material examined
(
NHMUK
).
Holotype
: •
1 ♂
,
Cameroon
,
Mt Cameroon
,
Mann’s Quelle
(
2256 m
),
M Steele
,
4. II. 1932
, B. M. 1934-240, No.
NHMUK 010639754
.
Paratype
: •
1 ♂
,
Uganda
,
Ruwenzori Range
,
Bigo
(
3475 m
),
DS Fletcher
,
20–22. VII. 1952
, No.
NHMUK 010639740
.
Distribution.Cameroon
,
Uganda
.
Etymology.
The specific name
“
longipedes
” derives from Latin, referring to the extremely long hind legs.
Remarks.
This species is similar to
C. leucopterae
(
Wilkinson, 1936
)
but differs in the following: temple not constricted behind eyes in dorsal view (distinctly constricted in
C. leucopterae
);
T
2 1.2 × wider than median length (3.3 × wider in
C. leucopterae
); and
T
3 polished (longitudinally striate in
C. leucopterae
).