Cryptocanthon urguensis 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 : 86-89

35. Cryptocanthon urguensis Cook sp.nov.

( Figs. 186–190 )

Material Examined. Two specimens (1 male, 1 female).

Type Material. Holotype: ‘‘ ECUADOR: Napo / Misahualli / Rumi Urgu Mt. / 21.II.1984 / L. Huggert ’’ ( CMNC) male . Paratype (1): same data as holotype ( BDGC) 1 female .

Etymology. The epithet ‘‘urguensis,’’ Latin adjectival form of Urgu, refers to the type locality of this species.

Diagnosis. This species is distinguished by the following combination of characters: vertical surface of clypeus not foveate; pronotal hypomeron carinate; inflexed portion of elytron lacking basal fovea; metathoracic wings fully formed; convexity of pygidium with median longitudinal swelling; paramere apices conjointly rounded ( Fig. 189 ).

Description. Holotype. Male. Total length 4.0 mm; greatest width 2.4 mm. Head. Clypeus slightly produced anteriorly ( Fig. 187 ). Clypeal teeth weakly developed, widely separated, moderately reflexed. Clypeal emargination shallowly rounded; vertical surface broadly V-shaped, not foveate. Apical margin of clypeus lateral to teeth slightly convexly arcuate. Disc of clypeus concave, with medium-sized punctures separated by about one diameter. Clypeogenal suture absent. Gena very slightly produced, anterior margin slightly raised above level of anterior margin of clypeus. Vertex and gena with medium-sized punctures separated by one diameter or less.

Pronotum. Convex medially, laterally explanate, shallow depressions laterally in posterior half. Anterior angles acute. Sides anterior to lateral angles slightly concavely arcuate; nearly straight posterior to lateral angles. Posterior angles obtuse, not incised. Pronotum densely punctate; punctures of disc elongate, curved; posterolaterally, punctures large, shallow, annulate; setae very fine, short, inconspicuous. Pronotal hypomeron convex, shallowly punctate, with longitudinal carina posterolaterally.

Elytra. Transversely and longitudinally moderately convex; lateral carinae not strongly elevated. Each elytron dorsally with seven striae, each stria indicated by two wavy lines. Elytral intervals slightly convex; each interval with minute setose punctures on each side adjacent to striae; setae short, curved, inconspicuous. Inflexed portion of elytron moderately broad, evenly narrowed apically, lacking basal fovea, with scattered minute punctures and a few transverse wrinkles; stria eight and nine absent, ten indicated by row of punctures adjacent to epipleuron. Epipleuron with scattered small, shallow punctures. Wings. Metathoracic wings well developed. Venter. Prosternum with small, shallow punctures. Mesosternum with shallow, poorly-defined punctures medially; dense, shallow punctures laterally. Meso-metasternal suture broadly rounded medially. Metasternum with shallow longitudinal depression posteromedially; minute scattered punctures medially; posteriorly, punctures larger, shallow; laterally, punctures large, shallow, annulate. Legs. Profemur densely punctate ventrally. Protibia ( Fig. 186 ) with apical half broadened medially; deeply notched medially before apex. Mesofemur and metafemur with small, elongate punctures ventrally. Metatrochanter with tooth-like projection medially on posterior margin. Metatibia strongly angulate, weakly crenulate on posterior half, without subapical lobe. Abdomen. Apical sternite with irregularly spaced small to medium punctures. Pygidium moderately convex, moderately punctate; convexity with weak median longitudinal swelling; base with narrow sulcus. Male genitalia. Parameres ( Figs. 188–189 ) with apices conjointly rounded, not setose.

Variation. Female: total length 3.6 mm; greatest width 2.2 mm; clypeal teeth more strongly developed; anterior margin of clypeus more deeply rounded; legs unmodified.

Bionomics. The two known specimens of this species were collected during the month of February.

Geographic Distribution ( Fig. 190). This species is known only from the type locality on the eastern slope of the Andean Cordillera in the province of Napo, Ecuador .

Figures

Figs. 186–189. Cryptocanthon urguensis. 186) left protibia, male; 187) clypeal outline; 188) aedeagus, lateral; 189) parameres, dorsal. Scale line 5 0.5 mm.