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Snake species of the Osa Peninsula

Serpentes                                                                             
  Alethinophidia
                   Boidae
                         Boinae
                                    Boa constrictor (SA/N,D)
                                    Corallus hortulanus (A/N)
                                    Epicrates cenchria (T/N)

                   Ungaliophiidae
                                    Ungaliophis panamensis (A/N)

                   Colubridae
                         Xenodontines
                                    Clelia clelia (T/N, D)
                                    Oxyrhopus petolarius (T/N)
                                    Tripanurgos compressus (T/N)
                                    Erythrolamprus mimus (T/D)
                                    Xenodon rabdocephalus (T/D)
                         Amastridines
                                    Amastridium veliferum (SF/D)
                                    Enulius sclateri (F/D)
                                    Nothopsis rugosus (SF/D)
                         Dipsadines
                                    Coniophanes fissidens (T/N,D)
                                    Dipsas tenuissima (A?/?)
                                    Geophis hoffmanni (T/?)
                                    Hydromorphus concolor (SA/D)
                                    Imantodes cenchoa (A, T/N)
                                    I. inornatus (A/N)
                                    Leptodeira rubricata (SA/N)
                                    L. septentrionalis (SA/N)
                                    Ninia maculata (T/D)
                                    N. sebae (T/N)
                                    Rhadinea decorata (T/D)
                                    Sibon dimidiatus (?/?)
                                    S. nebulatus (A/N)
                                    Urotheca decipiens (T/D)
                                    U. fulviceps (T/N, D)
                                    U. guentheri (T/D)
                         Colubrines
                                    Chironius carinatus (T/D)
                                    C. grandisquamis (T/D)
                                    Dendrophidion percarinatum (T/D)
                                    Drymarchon corais (SA/D)
                                    Leptophis ahaetulla (A/D)
                                    L. riveti (?/D)
                                    Mastigodryas melanolomus (T/D)
                                    Oxybelis aeneus (A/D)
                                    Pseustes poecilonotus (A/D)
                                    Scaphiodontophis annulatus (T/D)
                                    Spilotes pullatus (SA/D)
                                    Stenorrhina degenhardtii (SF/D)
                                    Tantilla ruficeps (SF/D)
                                    T. schistosa (SF/?)
                                    T. supracincta (SF/?)

                   Elapidae
                         Elapinae
                                    Micrurus alleni (T/N)
                                    M. nigrocinctus (T/N)

                   Viperidae
                         Crotalinae
                              Lachesines
                                    Bothriechis schlegelii (A/N)
                                    Bothrops asper (T/N)
                                    Lachesis melanocephala (T/N)
                                    Porthidium nasutum (T/N)

Possible species, based on their occurrence in similar habitat in southwestern Costa Rica:

Geophis brachycephalus (SF/?)
Leptodeira annulata (T/N)
Dendrophidion nuchale (T/D)
Dendrophidion vinitor (SA/D)
Drymobius margaritiferus (T/D)
Drymobius rhombifer (?/?)
Lampropeltis triangulum (T/N,D)
Leptophis depressirostris (A/D)
Leptophis nebulosus (A/D)
Micrurus clarki (T/N)

Key to abbreviations

A-arboreal                                                                   SA-semiarboreal
T-terrestrial                                                                  F-fossorial
SF-semifossorial                                                          SA-semiaquatic
N-nocturnal                                                                 D-diurnal

Bushmaster Survey Specifics
Introduction
Black-headed Bushmaster Survey 2008 Research Proposal (PDF document)
Survey Itinerary
Volunteer Training
Waiver of Liability
Snake species of the Osa Peninsula
Suggested Reading and References