Cryptocanthon solisi 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 : 53-55

20. Cryptocanthon solisi Cook sp.nov.

( Figs. 110–114 )

Material Examined. Thirty-one specimens (11 males, 20 females).

Type Material. Holotype: ‘‘ COSTA RICA. Prov. Heredia, P.N. / Braulio Carrillo, Transecto entre La / Selva y V. Barva, Refugio , 1,070 m. / 15–20 FEB 2001, A. Solis, T. Foso / I.N.527281 249761 #61535’’ ( INBIO) male . Paratypes (30): ‘‘ COSTA RICA. Prov. Heredia, / Sarapiquı´, P.N. Braulio Carrillo, / Estación 1070, 1,100 –1,200 m, 12–17 / FEB 2001, D. Brenes, M. Paniagua, T. Foso ’’ ( INBIO) 3 males, 3 females, ( CMNC) 1 male, 1 female; same data except ‘‘ 10–13 MAR 2001 ’’ ( INBIO) 3 males, 1 female ; same data except ‘‘ 15–18 MAR 2001 ’’ ( INBIO) 1 male, 7 females ; same data except ‘‘ 12 ABR 2001 ’’ ( INBIO) 2 males, 3 females ; same data except ‘‘ 16–19 ABR 2001 ’’ ( INBIO) 5 females .

Etymology. The epithet ‘‘solisi’’ is a patronym in recognition of the collecting of Angel Solis, Instituto Nacional de Biodiversidad, Costa Rica.

Diagnosis. This species is distinguished by the following combination of characters: vertical surface of clypeus not foveate; eye of male slightly visible dorsally when head fully retracted; pronotal hypomeron carinate; inflexed portion of elytron without basal fovea; metathoracic wings well developed; pygidium strongly convex medially, with median longitudinal swelling; paramere apices rounded ( Fig. 113 ).

Description. Holotype. Male. Total length 3.7 mm; greatest width 2.2 mm. Head. Clypeus not strongly produced anteriorly ( Fig. 111 ). Clypeal teeth well developed, moderately widely separated, strongly reflexed. Clypeal emargination between teeth evenly rounded, vertical surface shallowly V-shaped, not foveate. Apical margin of clypeus lateral to teeth arcuate. Disc of clypeus concave, coarsely, densely punctate. Clypeogenal suture obscure. Gena strongly produced, forming angle at junction with anterior margin of clypeus. Vertex and gena coarsely, densely punctate; punctures umbilicate. Eye slightly visible dorsally when head fully retracted. Pronotum. Convex medially, laterally explanate, with depressions laterally and with shallow median longitudinal depression in posterior half. Anterior angles acute. Sides anterior and posterior to lateral angles nearly straight. Posterior angles broadly, obtusely rounded; not incised. Pronotum coarsely, densely punctate; setae pale, recumbent. Pronotal hypomeron convex, coarsely punctate; posterior lateral carina present.

Elytra. Transversely and longitudinally moderately convex; lateral carinae not strongly elevated. Each elytron dorsally with seven striae, each stria indicated by two clearly wavy lines. Elytral intervals flat; each interval with row of small punctures on each side adjacent to striae; punctures bearing conspicuous pale, strongly arched setae. Inflexed portion of elytron moderately broad, evenly narrowed apically, lacking basal fovea, with irregular transverse wrinkles and setose punctures; striae eight and nine absent, ten indicated by row of punctures adjacent to epipleuron. Epipleuron with moderately large punctures in basal third. Wings. Metathoracic wings fully formed. Venter. Prosternum and mesosternum with large, shallow, annulate punctures. Meso-metasternal suture roundly arched medially. Metasternum with slight median longitudinal concavity in posterior half, anteriorly with minute scattered punctures, scattered larger punctures posteriorly; laterally, punctures large, dense, annulate. Legs. Profemur coarsely, densely punctate ventrally. Protibia ( Fig. 110 ) weakly broadened medially; preapical notch broad, shallow; strongly produced medially at apex. Mesofemur and metafemur with elongate punctures ventrally. Metatrochanter unmodified. Metatibia not angulate; inner margin not crenulate, lacking subapical lobe. Abdomen. Apical sternite coarsely punctate. Pygidium with strong median convexity and median longitudinal swelling; short sulcus at base; punctures shallow. Male genitalia. Parameres ( Figs. 112–113 ) with apices evenly rounded.

Variation. Male: total length 3.4–3.9 mm; greatest width 2.0– 2.3 mm. Female: total length 3.3–3.7 mm; greatest width 2.0– 2.2 mm; clypeal teeth more strongly developed; eye not visible dorsally when head is retracted; legs unmodified.

Bionomics. This species has been collected at 1,070 m elevation, during the months of February–April.

Geographic Distribution ( Fig. 114). This species occurs on the Atlantic slope of the Cordillera Volcanica Central of Costa Rica.

The Andean Species Group. Fifteen species are placed in this group ( C. altus , C. chiriquinus , C. curticrinus , C. escobari , C. foveatus , C. genieri , C. humidus , C. lobipygus , C. medinae , C. napoensis , C. otonga , C. paradoxus , C. parvus , C. punctatus , and C. urguensis ). All of the species of this group share a derived, non-umbilicate type of head punctation (cladogram, Fig. 191 ).

Figures

Figs. 110–113. Cryptocanthon solisi. 110) left protibia, male; 111) clypeal outline; 112) aedeagus, lateral; 113) parameres, dorsal. Scale line 5 0.5 mm.

Fig. 191. Tree showing phylogenetic relationships among the species of Cryptocanthon. Black circles indicate homology, white circles indicate homoplasy. Character numbers are above each circle. The outgroup is Paracryptocanthon borgmeieri (Vulcano et al.). Tree length 5 53; consistency index 5 0.35; retention index 5 0.77.