Revision of Bonesioides Laboissière, 1925 (Coleoptera; Chrysomelidae; Galerucinae) from continental Africa
Author
Freund, W.
Author
Wagner, TH.
text
Journal of Natural History
2003
2003-08-31
37
16
1915
1976
http://www.tandfonline.com/doi/abs/10.1080/00222930110096519
journal article
10.1080/00222930110096519
1464-5262
5260403
Bonesioides jacksoni
(Bryant, 1953)
; comb. nov.
Monolepta jacksoni
Bryant, 1953: 864
.
Redescription
Total length
.
4.6–5.9 mm
(mean:
5.17 mm
).
Head
. Labrum, labial and maxillarx palpus black, frons and vertex dark metallic blue. Antenna short, extending towards end of mesosternum (figure 44). Antennal articles short and broad, dark brown to black, first three articles paler. Antennal article 3 about 30% longer than antennal article 2 (figure 45), A2/A3: 0.64–0.70 (mean: 0.66); antennal article 4 not longer than articles 2 and 3 combined, A3/A4: 0.69–0.85 (mean: 0.75). Eyes small (figure 44), WE/DE: 0.43–0.65 (mean: 0.52).
F 44–47. Morphology of
Bonesioides jacksoni
(Bryant, 1953)
. (44) Habitus; (45) basal antennal articles: (A, B) females, (C, D) males; (46) three different spermathecae; (47) median lobe: (A) lateral, (B) dorsal, (C) ventral, without endophallic structures.
Thorax
. Pronotum and elytra dark metallic blue. PL: 0.8–1.0 mm (mean:
0.91 mm
), PW:
1.4–1.9 mm
(mean:
1.57 mm
), PL/PW: 0.53–0.64 (mean: 0.58). EL:
3.5–4.6 mm
(mean:
4.01 mm
), EW:
2.2–2.9 mm
(mean:
2.47 mm
), EW/EL: 0.48–0.70 (mean: 0.62). Mesothorax, metathorax and legs black, metatibia more than twice as long as metatarsus (figure 44), TA/TI: 0.39–0.48 (mean: 0.42).
Abdomen
. Black.
Male genitalia
. Median lobe broad, nearly parallel-sided, narrowed in apical quarter only (figure 47). Orifice broad and nearly rectangular, tectum very short. Endophallus with broad base and two very long right-curved spiculae; base of spiculae large. Endophallic brush small, protruding apical part of ductus ejaculatorius long and not covered by tectum.
Female genitalia
. Spermatheca with slender nodulus, homogeneously converging towards short and straight middle part; cornu long and strongly curved (figure 46).
Distribution
. Recorded only from southern
Kenya
(figure 48).
F. 48. Distribution of
Bonesioides jacksoni
(Bryant, 1953)
,
B. montana
sp. nov.
and
B. pusilla
sp. nov.
Diagnosis
.
Bonesioides jacksoni
is most similar to other metallic blue species of median size, like
B. laevicollis
,
B. virens
and
B. montana
sp. nov.
(figures 30, 39, 75). It can be distinguished by the short and broad antennal articles, especially by the shape of article 4 (figure 45), which is much longer and more slender in
B. laevicollis
,
B. virens
and
B. montana
sp. nov.
(figures 31, 40, 76; mean A3/A
4 in
B. jacksoni
is 0.75, in
B. virens
0.55, in
B. laevicollis
0.50, in
B. montana
sp. nov.
0.54). Species with similar-sized antenna, like
B. laboissierei
nom. nov.
,
B. trispiculata
sp. nov.
and
B. gambiae
sp. nov.
(figures 35, 55, 91) are smaller than
B. jacksoni
(mean total length in
B. jacksoni
is
5.17 mm
,
B. laboissierei
nom. nov.
4.15 mm
,
B. trispiculata
sp. nov.
4.34 mm
,
B. gambiae
sp. nov.
4.24 mm
).
B. kirschi
and
B. montana
sp. nov.
, the only species occur syntopically with
B. jacksoni
, can be distinguished by the median lobe. It is rather similar in
B. jacksoni
and
B. kirschi
, but the spiculae are right-curved in the first and left-curved in the latter species.
B. montana
sp. nov.
has a unique and unmistakeable, very elongated and apically narrowed median lobe (figures 20, 47, 78).
Type
material
H
:
W
‘
Monolepta jacksoni
Bryant, Det. G. E. Brayant
/
Stony Athi, E. A. U.
,
Nat
:
Hist
:
Soc
:
Biol
:
Survey
, 5-40 /
Pres.
by
Com. Inst. Ent., B.M.
1953-358 /
Type H
.T.’ (BMNH);
Kenya
: 1°35∞S/37°0∞E; examined. P
:
8 ex.
, same data label as
holotype
(
BMNH
(
6 ex.
) /
NMK
(
1 ex.
) /
NMNH
(
1 ex.
));
2 ex.
, same data label as
holotype
, ‘4-40’ (
BMNH
); examined
.
Other material examined
Kenya
:
96 ex.
, same data label as
holotype
, ‘4-40 (
2 ex.
) / 5-40 (
30 ex.
) / 6-40 (
64 ex.
)’ (
NMK
)
;
1 ex.
, Chyulu Hills, 2°41∞S/37°53∞E,
1900 m
,
June 1888
(
BMNH
)
;
1 ex.
, Nairobi Park, 1°22∞S/37°0∞
E, D. G. Furth
(
NMNH
)
.