Cryptocanthon medinae Cook, 2002

Cook, Joyce, 2002, A Revision Of The Neotropical Genus Cryptocanthon Balthasar (Coleoptera: Scarabaeidae: Scarabaeinae), The Coleopterists Bulletin (mo 1) 56, pp. 3-96 : 72-74

29. Cryptocanthon medinae Cook sp.nov.

( Figs. 156–160 )

Material Examined. Eight specimens (5 males, 3 females).

Type Material. Holotype: ‘‘ COLOMBIA: Valle PNR / Farallones Hato Viejo / 2,200 m Tram. Exc. H. / Claudia A. Medina / Abril 20 de 1997’’ ( IAVH) male . Paratypes (7): same data as holotype ( CMNC) 1 male, 1 female, ( IAVH) 3 males, 2 females.

Etymology. The epithet ‘‘medinae’’ is a patronym in recognition of the collecting of Claudia Medina, University of Pretoria.

Diagnosis. This species is distinguished by the following combination of characters: vertical surface of clypeus not foveate; pronotal hypomeron carinate; inflexed portion

medinae . Known distribution.

of elytron without basal fovea; metathoracic wings greatly reduced; pygidium evenly convex medially; paramere apices broad, truncate ( Fig. 159 ).

Description. Holotype. Male. Total length 4.1 mm; greatest width 2.6 mm. Head. Clypeus not strongly produced anteriorly ( Fig. 157 ). Clypeal teeth moderately developed, widely separated, reflexed.Clypeal emargination evenly rounded; vertical surface slightly more elongate medially, not foveate. Apical margin of clypeus lateral to teeth weakly, convexly arcuate. Disc of clypeus concave, with moderately small punctures separated by about one diameter; anteriorly, punctures smaller, erratically spaced. Clypeogenal suture faintly indicated. Gena not produced, with slight angle at junction with anterior margin of clypeus; punctation similar to that of clypeus. Vertex with small punctures separated by less than one diameter. Pronotum. Convex medially, laterally explanate. Anterior angles approximately right-angled. Lateral margin nearly straight both anterior and posterior to lateral angles. Posterior angles roundly obtuse, not incised. Pronotum densely punctate; punctures of disc small and deep, punctures shallow, larger posteriorly and laterally; setae pale, erect, strongly arched. Pronotal hypomeron convex, with large, shallow punctures; with longitudinal carina posterolaterally. Elytra. Transversely and longitudinally moderately, evenly convex; lateral carinae not elevated. Each elytron dorsally with seven striae, each stria indicated by two wavy lines. Elytral intervals flat; each interval with row of fine setose punctures on each side adjacent to striae; setae pale, elongate, erect, with apices strongly arched. Inflexed portion of elytron moderately broad, evenly narrowed apically, with irregularly-spaced, fine punctures on lateral half; irregular transverse wrinkles basally and in apical third; basal fovea absent; one stria (eight or nine) vaguely indicated in basal half, ten complete along margin of epipleuron. Epipleuron with irregularly-spaced fine punctures. Wings. Metathoracic wings greatly reduced. Venter. Prosternum with small shallow, annulate punctures. Mesosternum with shallow, annulate punctures; punctures small to medium-sized, scattered medially, separated by about one diameter laterally. Meso-metasternal suture angulate medially. Metasternum flat medially; disc finely punctate in anterior half, with medium-sized shallow punctures in posterior half; laterally, punctures large, annulate, separated by less than one diameter. Legs. Profemur moderately strongly punctate ventrally. Protibia ( Fig. 156 ) with medial expansion in apical half before notch; subapical notch present. Mesofemur and metafemur with scattered small, elongate punctures ventrally. Metatrochanter weakly dentate on posterior margin. Metatibia angulate, inner margin not crenulate; subapical lobe present on inner margin. Abdomen. Apical sternite evenly convex, with small punctures medially and medium-sized, shallow punctures laterally. Pygidium evenly convex, with irregularly spaced, shallow punctures; with narrow sulcus at base. Male genitalia. Parameres ( Figs. 158–159 ) with apices truncate, not setose.

Variation. Male: total length 4.1–4.3 mm; greatest width 2.6–2.7 mm. Female: total length 4.1–4.4 mm; greatest width 2.6–2.8 mm; clypeal teeth more strongly developed; tibiae unmodified.

Bionomics. This species has been collected during April in human dung traps, at 2,200 m elevation.

Geographic Distribution ( Fig. 160). This species occurs on the Cordillera Occidental in the Colombian division of Valle.

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Figures

Figs. 156–159. Cryptocanthon medinae. 156) left protibia, male; 157) clypeal outline; 158) aedeagus, lateral; 159) parameres, dorsal. Scale line 5 0.5 mm.