Bolboceratex transvaalicus (Petrovitz) Gussmann S. M. & Scholtz, 2000

Gussmann S. M. & Scholtz, C. H., 2000, Systematic revision of endemic southern African genera of Bolboceratinae (Coleoptera: Scarabaeoidea: Bolboceratidae), Journal of Natural History 34, pp. 1045-1123 : 1111-1112

publication ID 10.1080/00222930050020122


persistent identifier

treatment provided by


scientific name

Bolboceratex transvaalicus (Petrovitz)

comb. nov.

Bolboceratex transvaalicus (Petrovitz) comb. nov.

(®gures 23a±c, e, 25g, h, 28g ±i, 31a, 34)

Bolboceras transvaalicus Petrovitz, 1974: 211 , ®gures 1,2.


Body length. Holotype 13.9 mm, paratype 12.8 mm, 1m 13.5 mm.

Colour. Mid-brown.

Head. Dorsal surface asetose except for labrum. Outer margin of mandible rounded. Labrum (®gure 25g) with a few scattered setae; declivous in anterior twothirds and posterior one third, transverse carina absent; anterior margin straight. Clypeus (®gure 25g) sloping upward posteriorly to apex of feebly to moderately developed transverse anterior carina; lateral carina also feebly to moderately developed but distinctly raised above antennal insertion, continuing from there posteriorly in a slightly arcuate line to almost posterior end of frons, feebly developed adjacent to eye-canthus; posteriorly with pair of well-separated tubercles; distance between the two tubercles slightly more than distance between tubercle and lateral carina; antero-latera l angle of genae distinctly raised. Frons more or less ¯at. Antennal club with glabrous area of basal segment two-thirds of exposed surface.

Pronotum (®gure 31a). With large, shallow concavity occupying anterior half of pronotum; concavity delimited posteriorly by two carinate (male) or non-carinate (female), feebly arcuate lobes; posteriorly with very feebly impressed midline, anteriorly opening up into concavity but posteriorly not reaching posterior pronotal margin; concavity with large punctures interspersed with minute punctures; disc with densely spaced, moderately sized punctures, these increasingly densely spaced and conūent towards sides; concavity at its widest point as wide as frons between eyes; lateral margin entire.

Scutellum. Basal width about 1.5Ölength (®gure 25h); with moderately sized punctures.

Elytron. Striae moderately impressed, their punctures separated by two to three puncture diameters (®gure 25h); intervals with ®ne punctation (approximately four to ®ve punctures between two striae).

Metasternum. As in generic description but longitudinal suture reaching meso-metasternal suture (®gure 24a).

Legs. Protibia six- to seven-dentate. Metatibia in lateral view elongate, only feebly broadening apically; with subapical carina feebly to distinctly bilobed; with toothlike projections arranged in two rows above subapical carina. Metatarsus lacking subapical setae on tarsomeres 2±4.

Male genitalia. Aedeagus as in ®gure 28g ±i.

Distribution (®gure 32). The species is known only from the type locality near Pretoria and one additional locality in Free State Province.

Type material examined. HOLOTYPE:l`SuÈdafrika, Transvaal, Pretoria, UV-Lichtfalle Farm Roodeplaat [25.38S 28.23E], ii.1961, F. Neubecker’/` Bolboceras transvaalicum nov. Petrovitz’ [black print on red label]/` Holotypus ’ [red print on white label with red margin]/`Typus’ [black print on red label] ( HNHM) ; PARATYPE,l same data as holotype but:`Paratypus’ [black print on red label]/`coll. Petrovitz’ [black print on white label] ( NHMG) .

Additional material examined (1 specimen). South Africa: 1m,`S. Africa, O.F.S., Deelfontein 482, Bothaville SE 27 26 Ba [27.22S 26.37E], 12± 22.iv.1977, G. W. & M. C. Ferreira’ ( BMSA, No.7414) GoogleMaps .

Comments. The aedeagi of the holotype and the paratype, dissected by Petrovitz, are each glued on to a piece of cardboard and attached to the respective specimen.

Petrovitz’s original description (1974) of Bolboceras transvaalicus is listed as a reference in Krikken (1984) but the species ®nds no mention elsewhere in the publication and therefore had not been transferred from Bolboceras to any of the valid genera. It is now placed in the genus Bolboceratex .

DiOEerences between Bolboceratex transvaalicus and its closest relative Bolboceratex spurius (PeÂringuey) are discussed under the latter.


Hungarian Natural History Museum (Termeszettudomanyi Muzeum)


Goteborgs Naturhistoriska Museet


National Museum Bloemfontein














Bolboceratex transvaalicus (Petrovitz)

Gussmann S. M. & Scholtz, C. H. 2000

Bolboceras transvaalicus

PETROVITZ, R. 1974: 211
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF