Woodhouse's Toad
Anaxyrus woodhousii
Summary 2
Woodhouse's toad (Anaxyrus woodhousii) is a medium-sized (4 inches or 10 centimetres) true toad native to the United States and Mexico.
While Woodhouse's Toad is historically documented in Bexar County, it has apparently been extirpated in recent years. The disappearance of this species across much of its former range in eastern, southern and central Texas. It used to be the one of the most common toad species in parts of the Hill Country, yet is gone from most of that former range.
The reasons for its disappearance in most of its former Texas range is unknown.
Calls 3
The call of the Woodhouse's Toad is a short nasal trilling sound that lasts 3-4 seconds. You can hear a Woodhouse's Toad from Gillespie County (probably the closest extant population to Bexar County?) in this iNAt record -
https://www.inaturalist.org/observations/12278176
https://static.inaturalist.org/sounds/21204.mp3
Similar Species 3
Woodhouse's Toad is most likely to be confused with the more common Gulf Coast Toad (Incilius nebulifer) in our region. Gulf Coast Toads are abundant in Bexar County and are found in neighborhoods, backyards and gardens all over the county. Gulf Coast Toads are best differentiated from Woodhouse's Toad by the patterns of their cranial crests (the bony crests behind and between the eyes). The cranial crest of Woodhouse's Toad is mostly an "L" shaped ridge that runs along the snout, between the eyes and then turns perpendicularly out to for a "post orbital ridge" behind the eye. In the Gulf Coast Toad, that cranial crest does turn to form the post orbital bar, but it also continues straight posteriorly.
The call of the Gulf Coast Toad is a sustained trill that is less "nasal" than and much longer than that of the Woodhouse's Toad.
Fontes e Créditos
- (c) Chris Harrison, alguns direitos reservados (CC BY-NC), uploaded by Chris Harrison
- Adaptado por Chris Harrison de uma obra de (c) Wikipedia, alguns direitos reservados (CC BY-SA), https://en.wikipedia.org/wiki/Anaxyrus_woodhousii
- (c) Chris Harrison, alguns direitos reservados (CC BY-SA)
