ELATERIDAE Author: John F. Lawrence, 2001. Classification Suborder Polyphaga, Series Elateriformia, Superfamily Elateroidea. Description Antenae with 11 segments, filiform or serrate or pectinate or flabellate. Antennal insertions exposed or concealed. Visible portion of procoxa globular with the trochantin concealed. Procoxal cavity externally open and internally open. Mesocoxae separated by 0.4 to more than 1 coxal width, with mesocoxal cavity laterally open to closed. Tarsal formula 5-5-5. Numberof ventrites 5 with 4 or rarely 3 connate. Body length 2.5-55 mm. Elongate, slender, usually tapering posteriorly, with produced and acute hind pronotal angles. Glabrous to setose. Labrum free. Prosternum usually very long and often produced under head as chin-piece. Cebrioninae atypical, soft-bodied; females often with truncate elytra exposing several abdominal tergites. Lissominae resembling Throscidae (but glabrous) and Thylacosterninae eucnemid-like, but with free labrum. Quick identification The majority of Elateridae cannot be confused with anything else due to the characteristic click-beetle form with projecting hind pronotal angles, long prosternum, globular procoxae with concealed trochantins, lack of a transverse metaventral suture, well-developed metacoxal plates and 4 connate ventrites. Some of the more unusual forms which may be misidentified are the Thylacosterninae and Lissominae (last three figures). The first resembles Eucnemidae and the second Throscidae. Both have an unusual type of deep antennal cavity shown in the penultimate figure. Some members of the Cebrioninae (first figure) are also atypical in being relatively soft-bodied with the procoxal cavities somewhat more open. Genera occurring in Costa Rica Thylacosterninae: Pterotarsus (= Lissothyeus), Thylacosternus. Lissominae: Drapetes, Lissomus. Semiotinae: Oistus, Semiotus. Agrypninae: Achrestus, Aeolus, Agrypnus, Alampes, Alaus, Anaissus, Chalcolepidius, Chalcolepis, Conoderus, Deilelater, Dilobitarsus, Hemirrhipus, Heteroderes, Ignelater, Lacais, Lacon, Lygelater, Pherhimius, Platycrepidius, Pyrophorus, Rismethus, Saltamartinus... Denticollinae: Hemicrepidius. Negastriinae: Agrypnella, Neoarhaphes, Paradonus. Cebrioninae: Octinodes, Scaptolenus. Elaterinae: Agriotes, Anchastomorphus, Anchastus, Anoplischiopsis, Anoplischius, Atractosomus, Cardiorhinus, Cosmesus, Crepidius, Cyathodera, Deromecus, Dicrepidius, Diplostethus, Dipropus, Glyphonyx, Heterocrepidius, Hypodesis, Megapenthes, Melanotus, Neotrichophorus, Orthostethus, Physorhinus, Pomachilius, Psiloniscus, Smilicerus, Spilomorphus, Spilus, Tomicephalus, Ypsilostethus. Cardiophorinae: Aptopus, Esthesopus, Horistonotus, Triplonychoides, Triplonychus. © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 © CSIRO Emtomology, 1999 Derechos Reservados INBio. Copyrights INBio