Bolborhinum seai ( Martínez, 1951 ), Martinez, 1951

Mondaca, José & Smith, Andrew B. T., 2008, A revision of the southern South American genus Bolborhinum Boucomont (Coleoptera: Geotrupidae: Bolboceratinae), Zootaxa 1794, pp. 1-48 : 14

Bolborhinum seai ( Martínez, 1951)

( Figs. 6, 24, 25)

Original combination: Bolboceras seai Martínez, 1951:113 . Type locality: “ Argentina, Catamarca, Dep. Ambato, Los Angeles.” Type series: holotype male at MACN labeled a) Argentina / Catamarca / Dep. de Ambato / Los Angeles / II-1946 / B. Schafer leg. (handwritten), b) “ HOLOTYPUS (typeset, faded red label), c) “ Bolboceras / seai sp. n. ɗ” (handwritten by Martínez, red label), d) “Southern Neotropical Scarabs / database # JM2000594 / Bolborhinum seai / ( Martínez, 1951) ɗ / DET: J. MONDACA E. 2007” (typeset)

Specimens examined. 1 specimen was examined from MACN.

Diagnosis. Length 16.0 mm, width 9.9 mm. Color yellowish-brown. This species is distinguished from other Bolborhinum by the number and placement of the cephalic horns and carinae in the male. Clypeal horn located at midline of clypeal apex, directed anteriorly, slightly curved, posteriorly after clypeal horn with two small vertical horns basal to clypeal horn on either side of midline at base of clypeus (not on lateral margin), and two frontal horns and carinae on either side of midline; frontoclypeal line from the antero-internal angle of the ocular canthus carinate, tuberculate. Clypeal surface between horns slightly depressed; vertex dorsally impunctate, laterally with border elevated into distally obtuse triangular teeth. Pronotum with deep, wide anterior excavation; pronotal declivity impunctate; posterosuperior ridge transverse, slightly projected in the middle, with a short and shallow furrow not reaching the basal border of the pronotum. Female unknown.

Distribution ( Fig. 59 ). ARGENTINA (1): Catamarca (1): Ambato, Los Angeles (1).

Temporal data. February (1).

Remarks: It is notable that this is the only species in the genus that occurs north of the southern South American biogeographical region. More collecting is needed from Catamarca to Mendoza in Argentina to determine if the distribution of this genus is disjunct or continuous. Bolborhinum seai is known only from a single specimen.

Figures

FIGURE 59. Bolborhinum seai distribution.