Cryptocanthon otonga 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 : 77-78

31. Cryptocanthon otonga Cook sp.nov.

( Figs. 1 , 166–170)

Material Examined. Sixty-six specimens (39 males, 27 females).

Type Material. Holotype: ‘‘ ECUADOR: Cotopaxi / Otonga 2,000 m / 08259S, 79809W / 24 Mar 1999 T Enríquez ’’ ‘‘ Ex Primary Forest / Pitfall Trap / Human Dung ’’ ( QCAZ) male . Paratypes (65): same data as holotype ( CMNC) 2 males, ( QCAZ) 2 males, ( FVMC) 2 males, 1 female; same data except ‘‘ 22 Mar 1999 ’’ ( QCAZ) 9 males, 5 females, ( CMNC) 2 females; same data except ‘‘ 22 Mar 1999 ’’ ‘‘ Ex Secondary Forest ’’ ( QCAZ) 2 males, 2 females ( FVMC) 3 males, 1 female; same data as holotype except ‘‘ Ex Secondary Forest ’’ ( QCAZ) 1 female ; same data as holotype except ‘‘ 19 Apr 1999 ’’ ( QCAZ) 2 females ; same data except ‘‘Ex / Secondary Forest / NTP80 Trap Fish’’ ( QCAZ) 1 female ; same data except ‘‘ 27 Aug 1999 ’’ ( QCAZ) 1 male, ( FZVC) 1 male, 1 female; same data except ‘‘ 21 Apr 1999 ’’ ( QCAZ) 1 female, ( FZVC) 1 male, 1 female; same data except ‘‘ 23 Apr 1999 ’’ ‘‘ Primary Forest ’’ ( QCAZ) 2 females, ( FZVC) 1 male; same data as holotype except ‘‘ 16 Mar 1999 ’’ ( QCAZ) 1 male, 1 female ; same data except ‘‘ Secondary Forest ’’ ( QCAZ) 4 males, 1 female ; same data as holotype except ‘‘ 14 Mar 1999 ’’ ( QCAZ) 1 male, 1 female ; same data except ‘‘ Secondary Forest ’’ ( QCAZ) 5 males, ( FZVC) 1 female; same data except ‘‘ Primary Forest / NTP80 Trap / Cow’s Liver’’ ( QCAZ) 1 female ; same locality as holotype ‘‘ 20 May 1999 / L Torres M Thubert ’’ ‘‘ Ex / Primary Forest / NTP80 Trap Fish ’’ ( QCAZ) 2 females ; same locality as holotype ‘‘ 1 Feb 1999 ’’ ( FZVC) 1 male ; same locality as holotype ‘‘ 3 Feb 1999) ( FZVC) 2 males .

Etymology. The epithet ‘‘otonga,’’ a noun in apposition, refers to the type locality of this species in the Ecuadorian Reserva Otonga.

Diagnosis. This species is distinguished by the following combination of characters: vertical surface of clypeus foveate; anterior margin of clypeus strongly sinuate lateral to apical teeth ( Fig. 167); pronotal hypomeron not carinate; elytra fringed laterally with elongate, curved setae ( Fig. 1 ); inflexed portion of elytron lacking basal fovea; metathoracic wings greatly reduced; male metasternum with small median fovea; paramere apices elongate, narrow, angulate ( Fig. 169).

Description. Holotype. Male. Total length 4.8 mm; greatest width 3.0 mm. Head. Clypeus not strongly produced anteriorly ( Fig. 167). Clypeal teeth moderately developed, widely separated, moderately reflexed. Clypeal emargination shallowly, evenly rounded; vertical surface narrow, with oval median fovea. Apical margin of clypeus lateral to teeth strongly convexly arcuate. Disc of clypeus concave, with small, deep punctures separated by one diameter or less. Clypeogenal suture faintly indicated. Gena strongly produced, with distinct angle at junction with anterior margin of clypeus; punctation similar to that of clypeus. Vertex with small deep punctures separated by less than one diameter. Pronotum. Convex medially, laterally explanate, with shallow depressions laterally in posterior half. Anterior angles approximately right-angled. Sides anterior to lateral angles slightly concave; convexly rounded posterior to lateral angles. Posterior angles broadly obtuse, not incised. Pronotum densely punctate except for narrow, longitudinal, posteromedian impunctate area; punctures of disc moderately small, elongate; posteriorly and laterally punctures medium-sized, shallow, annulate; setae yellowish, elongate, erect, with curved apices. Pronotal hypomeron convex, with medium-sized punctures; longitudinal carina absent. Elytra. Transversely and longitudinally strongly, evenly convex; lateral carinae slightly elevated. Each elytron dorsally with seven striae, each stria indicated by two wavy lines. Elytral intervals slightly convex in apical half; each interval with row of fine setose punctures on each side adjacent to striae; setae yellowish, very elongate, erect, with curved apices; setae along lateral carina forming dense, conspicuous fringe. Inflexed portion of elytron broad almost to apex, with irregularly spaced punctures; irregular transverse wrinkles in apical third; basal fovea absent; one stria (eight or nine) present in apical third, ten complete along margin of epipleuron. Epipleuron with medium-sized shallow punctures in basal half. Wings. Metathoracic wings greatly reduced. Venter. Prosternum with medium-sized shallow, annulate punctures. Mesosternum almost impunctate medially, with medium-sized shallow, annulate punctures laterally. Mesometasternal suture faintly indicated, broadly angulate medially. Metasternum convex medially with small oval fovea at mid-point of convexity; disc minutely punctate in anterior two-thirds, with small shallow punctures in posterior third; laterally, punctures large, dense, annulate. Legs. Profemur strongly punctate ventrally. Protibia ( Fig. 166) gradually widened from base to apex; subapical notch absent; with medial apical lobe. Mesofemur and metafemur with small, elongate punctures ventrally. Metatrochanter unmodified. Metatibia strongly angulate, inner margin not crenulate, subapical lobe present medially. Abdomen. Apical sternite evenly convex, with small punctures on most of surface, medium-sized, shallow punctures laterally. Pygidium evenly convex, with irregularly spaced, shallow punctures; base with oval fovea. Male genitalia. Parameres ( Figs. 168–169) with apices elongate, narrow, angulate, not setose.

Variation. Male: total length 4.0– 5.2 mm; greatest width 2.5–3.3 mm. Female: total length 4.4–5.0 mm; greatest width 2.7–3.1 mm; clypeal teeth more strongly developed than in male; protibia unmodified; metasternum without median fovea.

Bionomics. This species has been collected in human dung traps, fish-baited traps and liver-baited traps in both primary and secondary forest, at 2,000 m elevation, during the months of February–May and August.

Geographic Distribution ( Fig. 170). This species is known only from the type locality in the Equatorial Forest Region of Ecuador .

Figures

Fig. 1. Cryptocanthon otonga. Habitus, male.