Continent: Caribbean
Distribution: Puerto Rico, Isla Mona, Isla Desecheo, British Virgin Islands (e.g. Anegada)  Alsophis portoricensis portoricensis: widely distributed in Puerto Rico (including Cayo Santiago) except southern third of island and extreme west.   Alsophis portoricensis anegadae (HOLOTYPE MCZ 12083): British Virgin Is.   Alsophis portoricensis aphantus (HOLOTYPE BMNH RR1964.944): Isla Vieques.   Alsophis portoricensis nicholsi (HOLOTYPE UMMZ 80648): Buck Island of the Capella Islands off south coast of St. Thomas, U. S. Virgin Is.   Alsophis portoricensis prymnus (HOLOTYPE MCZ 77226): Caja de Muertos; Platillo; southern Puerto Rico.   Alsophis portoricensis richardi (HOLOTYPE USNM 66522): Isla Culebra, St. Thomas and its satellites, Lovango Cay, Peter I., SaltI.  
Type locality: Puerto Rico.

Alsophis portoricensis is prey of:
Buteo jamaicensis
Otus nudipes
Diptera
Secernentia nematodes

Based on studies in:
Puerto Rico, El Verde (Rainforest)

This list may not be complete but is based on published studies.

Alsophis portoricensis preys on:
Eleutherodactylus coqui
Eleutherodactylus richmondi
Eleutherodactylus portoricensis
Eleutherodactylus wightmanae
Eleutherodactylus eneidae
Eleutherodactylus hedricki
Anolis evermanni
Anolis stratulus
Anolis gundlachi
Sphaerodactylus klauberi
Sphaerodactylus macrolepis
Lepidoptera

Based on studies in:
Puerto Rico, El Verde (Rainforest)

This list may not be complete but is based on published studies.