Calling all frog experts...

  • gordon
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7 years 9 months ago #16942 by gordon
gordon created the topic: Calling all frog experts...
There were literally thousands of these little guys around Rietpan up in the hills near to Nigel. Anyone know what they are?





size is about 2-3cm

Thanks!
Gordon

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  • Doug
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7 years 9 months ago #16947 by Doug
Doug replied the topic: Re: Calling all frog experts...
I have tried frog ID myself but it is a complete nightmare. You need detailed shots and info about toe structure and length and close up shots of the tips of the toes as well as detailed markings etc from the extended legs or in 90% of cases I don't think you can make an ID.

Give me birds, even a large brown eagle any day over a frog :@)

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  • tachiro
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7 years 9 months ago #16962 by tachiro
tachiro replied the topic: Re: Calling all frog experts...
Hi Gordon, Hi Doug,

These are most likely Pyxicephalus adspersus - Giant Bullfrog
or otherwise but less likely Pyxicephalus edulus - African Bullfrog

Large swarms are seen after conditions for breeding were good, but occur less commonly these days.
check out:
http://www.up.ac.za/bullfrog/


Michael

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  • Doug
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7 years 9 months ago #16964 by Doug
Doug replied the topic: Re: Calling all frog experts...
At 2-3 cm long?

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7 years 9 months ago #16969 by Doug
Doug replied the topic: Re: Calling all frog experts...
I tried using the new frogs of Southwrn Africa.

Point one at the very start of the key....
1a) claws on hind foot
1b) no claws on hind foot.

And that is where you stop based on ID of frogs from photos.

Unless you have detailed info and pics of the hond feet no frog can be identified from a photo.

I am going to make an assumption though.
Claws on hind foot = platannas and this does not look like one so let's assume no claws.

Eye looks horizontaly elongated.

Next we need to see if there are adhesive terminal discs on the ends of the toes. again we are going to have to make assumptions here but let's do both.

Either we now have to see if the adhesive pads are round or T-shaped if we go with one option or if the inner metatarsal is massive for digging or not.

In short this frog cannot be identified from this photo at all.

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  • mossie
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7 years 9 months ago #16987 by mossie
mossie replied the topic: Re: Calling all frog experts...
100% and most definitely Giant Bullfrog.

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  • Doug
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7 years 9 months ago #16988 by Doug
Doug replied the topic: Re: Calling all frog experts...
The dwarf race? Isn't 2-3 cm a tad small even for younsters? This is supposed to be the size of a dinner plate!

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  • Grant B
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7 years 9 months ago #16989 by Grant B
Grant B replied the topic: Re: Calling all frog experts...
Hi

Definately a juvenile Giant Bullfrog.

I used the "Complete Guide to the Frogs of Southern Africa" by du Preez and Curruthers. They grow to a maximum length of 254mm and can weigh 1.4 kg, so this picture is a little deceiving, but i guess they have to start small.

Grant

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7 years 9 months ago #16990 by Doug
Doug replied the topic: Re: Calling all frog experts...
Did you use the keys in the front of the book? I tried but simply cannot see the foot detail required to make an ID based on those keys.

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7 years 9 months ago #16991 by Grant B
Grant B replied the topic: Re: Calling all frog experts...
No, I didn't. The key seems to complicate things more than anything. I based it on the clear markings ( Distinct bright and green markings) and the pale line running along the back.

But i have to agree with you I prefer IDing birds.

Grant

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