Bonesioides budongoensis, Freund & Wagner, 2003

Freund, W. & Wagner, TH., 2003, Revision of Bonesioides Laboissière, 1925 (Coleoptera; Chrysomelidae; Galerucinae) from continental Africa, Journal of Natural History 37 (16), pp. 1915-1976 : 1947-1949

Bonesioides budongoensis sp. nov.

Description

Total length. 4.8–5.2 mm (mean: 5.08 mm).

Head. Labrum, labial and maxillary palpus black; frons and vertex dull metallic green or purple. Antenna black, short, extending towards end of metasternum (figure 49), first three antennal articles dark brown, rarely paler. Antennal article 3 about 30% longer than article 2 (figure 50), A2/A3: 0.64–0.70 (mean: 0.67); article 4 not longer than articles 2 and 3 combined, A3/A4: 0.60–0.77 (mean: 0.68). Eyes small, frons broad (figure 49), WE/DE: 0.56–0.58 (mean: 0.57).

Thorax. Pronotum and elytra dull metallic green or purple. PL: 0.7–0.8 mm (mean: 0.79), PW: 1.5–1.7 mm (mean: 1.60 mm), PL/PW: 0.47–0.52 (mean: 0.49). EL: 3.7–4.2 mm (mean: 3.99 mm), EW: 2.0– 2.3 mm (mean: 2.23 mm), EW/EL: 0.53–0.58 (mean: 0.56). Mesothorax, metathorax and legs black, metatibia about twice as long as metatarsus (figure 49), TA/TI: 0.48–0.51 (mean: 0.50).

Abdomen. Black.

Male genitalia. Median lobe broad, parallel-sided from orifice towards tectum, than homogeneously narrowed apically (figure 52); orifice broad and ovate, tectum small and slender. Base of endophallus in lateral view strongly hooked (figure 52A); two small, curved spiculae in the middle of the endophallus. Apical part of sclerotized ductus ejaculatorius very long, extending towards apical quarter of median lobe and not covered by tectum.

Female genitalia. Spermatheca with expanded nodulus, middle part short, straight, cornu slightly curved, expanded in middle (figure 51).

Distribution. Distributed in montane regions of the Albertine Rift in Kivu, Rwanda and Uganda (figure 53).

Diagnosis. Bonesioides budongoensis sp. nov. is most similar in coloration and habitus to B. virens and B. nitida sp. nov. (figures 30, 49, 79), and most similar in male genitalia to B. marcoi sp. nov. (figure 74), but the latter species can be distinguished by the colour of pronotum and elytra, which is metallic blue in B. marcoi sp. nov., and dull metallic green or purple in B. budongoensis sp. nov. Furthermore, the eyes in B. marcoi sp. nov. are much larger than in B. budongoensis sp. nov. (figures 49, 71; mean WE/DE in B. marcoi sp. nov. 0.78, B. budongoensis sp. nov. 0.57). The differentiation between the other species mentioned is also possible by coloration: B. virens is metallic green or purple, B. nitida sp. nov. very shining metallic green, while B. budongoensis sp. nov. is much duller. Furthermore, these species can be distinguished by the median lobe. In B. nitida sp. nov. it is much more slender, both spiculae are right-curved and the protruding apical part of the sclerotized ductus ejaculatorius is shorter than in B. budongoensis sp. nov., where the apical part of the sclerotized ductus ejacolatorius is very long and the endophallus is strongly hooked at base (figures 52, 82). In B. virens , the base of the endophallus is not hooked and the protruding apical part of the sclerotized ductus ejaculatorius is very short (figure 33). The spiculae in B. virens are long and right-curved, in B. budongoensis sp. nov. short, one is left-curved, the other one right-curved.

Type material

H: W ‘ Holotypus Bonesioides budongoensis / Bonesioides budongoensis Freund & Wagner 2000 / Coll. Mus. Congo, N. Lac Kivu: Rwankwi, XII.1951, J. V. Leroy’ (MRAC); Congo: 1°20∞S/29°22∞E. P: Congo: 1 ex., Kalonge, 0°20∞N/29°48∞E, July 1937, H. J. Bredo (MRAC); 2 ex., Kyandolire, 0°20∞S/29°5∞E, 1780 m, October 1952, P. Vanschuytbroeck and J. Kekenbosch (IRSNB); 2 ex., Rwankwi, 1°20∞S/29°22∞E, January 1944, J. V. Leroy; Récolté sur vieille souche Erythrina (MRAC) ; 1 ex., Rwankwi, March 1948, J. V. Leroy (MRAC); 33 ex., same data as holotype, November–December 1947 (2 ex.) / July–December 1951 (31 ex.), J. V. Leroy (MRAC). Rwanda: 1 ex., Muhavura, 1°23∞S/29°40∞E, 2100 m, January 1953, P. Basilewsky (MRAC); 1 ex., Forêt Rugege, 1°30∞S/29°20∞E, 2150 m, dans l’humus, April 1951, N. Leleup (MRAC). Uganda: 2 ex., Budongo Forest, Unyoro, 1°45∞N/31°35∞E, 3400 ft, December 1911, S. A. Neave (BMNH); 1 ex., Bugoma Forest, Unyoro, 1°45∞N/31°35∞E, 3700 ft, December 1912, S. A. Neave (BMNH); 1 ex., Kibale Forest, 0°30∞N/30°25∞E, October 1983, M. Nummelin (NCHU); 2 ex., Mitiana, 0°10∞N/32°32∞E, 3800 ft, January 1912, S. A. Neave (BMNH); 1 ex., Mpanga Forest, Toro, 1°15∞N/31°6∞E, 4800 ft, November 1911, S. A. Neave (BMNH).