Cyclocaccus laeticulus, Sharp, 1891

Hisamatsu, Sadatomo, Bayless, Victoria M. & Carlton, Christopher E., 2016, Revision ofCyclocaccusSharp (Coleoptera: Nitidulidae: Nitidulinae), The Coleopterists Bulletin 70 (4), pp. 825-870: 825-870

publication ID 10.1649/0010-065X-70.4.825

persistent identifier

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scientific name

Cyclocaccus laeticulus


C. laeticulus   species-group

( Figs. 1–9 View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig , Maps 1–3)

Diagnosis. Length (n = 40) 1.57–2.40 (2.01) mm, width 1.30–1.99 (1.64) mm, depth 0.74–1.14 (0.97) mm. The group differs from other speciesgroups by the following combination of characters: apical margin of abdominal tergite VII widely rounded; prosternum feebly convex along midline; metathoracic discrimen absent; metanepisternum and abdominal sternites impunctate; inter-mesocoxal distance (n = 7) separated by 1.39–2.02 times width of inter-procoxal distance; inter-metacoxal distance (n = 7) separated by 1.95–2.60 times width of interprocoxal distance; abdominal sternite III without subcoxal lines; male pro- and mesotarsomeres I–III weakly or moderately bilobed; apical and lateral margins of tegmen strongly undulating; gonocoxites deeply incised at apex.

Distribution. Highlands of Mexico, Central and South America.

Comments. This species-group shows the most apparently plesiotypic characters among species- groups based on a limited review of genera within the cyllodine complex ( Table 1), including the widely rounded apical margin of abdominal tergite VII, feebly convex midline of prosternum, absence of subcoxal lines on abdominal sternite III, feebly to moderately bilobed pro- and mesotarsomeres I–III, and deeply incised apices of gonocoxites. Seven species are recognized in this study.