Epimetopus apocinus Perkins, 1979

Perkins, Philip D., 2012, 3531, Zootaxa 3531, pp. 1-95 : 29

Epimetopus apocinus Perkins, 1979

Figs. 44 (habitus), 48 (aedeagus), 139 (map)

Epimetopus apocinus Perkins, 1979: 323 .

New collection records: Costa Rica: Guanacaste, 18.7 km NW Bagaces, Hwy 1, Rio Carana , elev. 91 m, 10° 39' N, 85° 22' W, 4 vi 1973, Erwin & Hevel (5 USNM) ; Limon, Reventazon, Hamburg Farm , at light, 10° 15' N, 83° 28' W, 27 v 1935, F. Nevermann (2 FMNH) ; Puntarenas, Corcovado National Park, Sirena Stn., lower Ollas Trail , ex. UV light, elev. 5 m, 8° 24' N, 83° 35' W, 25 v 2000, Z. H. Falin (CR1ABF00) (5 SEMC) ; Mexico: Tabasco, Rio Puyacatengo, E. Teapa , 17° 33' N, 92° 57' W, 28–29 vii 1966, Flint & Ortiz (1 USNM) .

Differential diagnosis. The habitus of E. apocinus ( Fig. 44) is quite similar to other members of the Costatus group; reliable determinations will require examination of the male genitalia. The aedeagus has arching parameres somewhat similar to those of E. mucronatus , but otherwise the aedeagi of the two species are quite dissimilar ( Figs. 48, 56). The aedeagus of E. apocinus is larger and wider, the median lobe is less acutely pointed apically, and the parameres are arched differently and, in lateral view, are sinuate. Externally, E. apocinus has elongate granules linking the elytral punctures, whereas in E. mucronatus the granules do not link the punctures. E. ballatoris ( Fig. 30) also has arcuate parameres that arch over the median lobe; however, the extent of the arching is much more than in E. apocinus . The median lobe of E. ballatoris , which tapers distinctively in the distal one-half also clearly differs from that of E. apocinus . The pronotal lateral lobes are slightly less angulate in E. apocinus than in E. ballatoris ( Figs. 26, 44).

Distribution. Currently known from Costa Rica and Mexico ( Fig. 139).