Cryptocanthon gilli 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 : 12-13

2. Cryptocanthon gilli Cook sp.nov.

( Figs. 16–20 )

Material Examined. Fifteen specimens (8 males, 7 females).

Type Material. Holotype: ‘‘ VENEZ[UELA]: Bolivar / 120 km S El Dorado / 20–

27.XII.1987 / B.D. Gill ’’ ( CMNC) male. Paratypes (14): same data as holotype ( BDGC) 2 males, 1 female; ‘‘VENEZ: Bolivar / 125 km S El Dorado / 18.VII–7.VIII.86 / B. Gill 1,100 m ’’ ‘‘ dung traps ’’ ( BDGC) 5 males, 6 females .

Etymology. The epithet ‘‘gilli’’ is a patronym, in recognition of the collecting of Bruce Gill, Agriculture Canada.

Diagnosis. This species is distinguished by the following combination of characters: vertical surface of clypeus not foveate; eye partly visible dorsally when head fully retracted; pronotal hypomeron not carinate; inflexed portion of elytron with basal fovea; metathoracic wings fully developed; pygidium convex, with median longitudinal swelling; parameres apices rounded ( Fig. 19 ).

Description. Holotype. Male. Total length 3.5 mm; greatest width 2.1 mm. Head. Clypeus not strongly produced anteriorly ( Fig. 17 ). Clypeal teeth moderately developed, widely separated, moderately reflexed. Clypeal emargination evenly rounded; vertical surface broadly V-shaped, not foveate. Apical margin of clypeus lateral to teeth weakly convexly arcuate. Disc of clypeus concave, with moderately small, shallow punctures separated by about one diameter or less. Clypeogenal suture vaguely indicated. Gena not produced, with slight angle at junction with anterior margin of clypeus. Vertex and gena with moderately small, shallow, annulate punctures separated by one diameter or less. Eyes partly visible dorsally when head fully retracted. Pronotum. Convex medially, laterally explanate, with shallow depressions laterally in posterior half. Anterior angles approximately right-angled. Sides anterior to lateral angles slightly concave; slightly convex posterior to lateral angles. Posterior angles obtuse, not incised. Pronotal disc with moderately small, shallow punctures separated by one diameter or less; laterally, punctures medium-sized, shallow, annulate; setae pale, short, nearly recumbent. Pronotal hypomeron convex, with medium-sized, shallow punctures; longitudinal carinae absent. Elytra. Transversely and longitudinally moderately, evenly convex; lateral carina not elevated. Each elytron dorsally with seven striae, each stria indicated by two wavy lines. Elytral intervals flat; each interval with row of small setose punctures on each side adjacent to striae; setae pale, strongly arched. Inflexed portion of elytron moderately broad, evenly narrowed apically, with scattered, shallow punctures in basal half; basal fovea present; one striae (eight or nine) does not reach base, ten complete along margin of epipleuron. Epipleuron with small, shallow punctures. Wings. Metathoracic wings fully developed. Venter. Prosternum with medium-sized shallow, annulate punctures. Mesosternum with large shallow, annulate punctures. Meso-metasternal suture narrowly rounded medially. Metasternum slightly convex medially; disc minutely punctate in anterior two-thirds, with mediumsized, shallow, annulate punctures in posterior third; laterally, punctures large, shallow, annulate. Legs. Profemur strongly punctate ventrally. Protibia ( Fig. 16 ) weakly expanded medially, not notched, apex strongly lobed medially. Mesofemur and metafemur with small, elongate punctures ventrally. Metatrochanter weakly toothed on posterior margin. Metatibia weakly angulate, inner margin not crenulate and without subapical lobe or tooth. Abdomen. Apical sternite evenly convex, with medium-sized, shallow, annulate punctures. Pygidium convex, with median longitudinal swelling; punctures medium-sized, shallow, annulate, dense; base with short sulcus. Male genitalia. Parameres ( Figs. 18–19 ) with apices rounded, not setose.

Variation. Male: total length 3.5–4.2 mm; greatest width 2.1–2.5 mm. Female: total length 3.6–4.0 mm; greatest width 2.2–2.4 mm; clypeal teeth more strongly developed; legs unmodified.

Bionomics. This species has been collected in dung traps, at 1,100 m, during the months of July, August, and December.

Geographic Distribution ( Fig. 20). This species is known only from the Venezuelan state of Bolivar.

Figures

Figs. 16–19. Cryptocanthon gilli. 16) left protibia, male; 17) clypeal outline; 18) aedeagus, lateral; 19) parameres, dorsal. Scale line 5 0.5 mm.