Sexing Pics.

[guidofatherof5]

This thread is for the sole purpose of posting photos of confirmed sexed snakes. *Do not post guesses*

Keep this thread free of comments or chat.
Quality, focused photos, only.
Confirmation of sex should have come from personal observation of at least one of the following:
Probing, birthing or mating with visual confirmation of copulation.
All secondhand information is unacceptable.
With your photo include the following information:Species and/or subspecies, Sex.
Optional data could include.Age, length, weight.
An additional photo that depicts relative size could be included and would be helpful.

This thread can become the benchmark for sexing Thamnophis. Firsthand confirmation is paramount to its integrity.

Thamnophis Radix, Female, 2 years, 80 grams

[guidofatherof5]

Thamnophis radix, Male

[Sid]

Proven T. s sirtalis female:

[ssssnakeluvr]

melanistic eastern, t sirtalis sirtalis, female, 43 inches long

[ssssnakeluvr]

Florida blue, t sirtalis sirtalis, female, 34 inches

[ssssnakeluvr]

red sided garter, male, t sirtalis parietalis, 24 inches

[guidofatherof5]

I put these diagrams together to help with the identifications.

[ConcinusMan]

I put these diagrams together to help with the identifications.

Rod Hardman's pics from facebook also make good reference so I combined them.

[ConcinusMan]

I put these diagrams together to help with the identifications.

That should read "this is where the hemipenes are kept" There's two of them, remember? Funny... they only have one one working lung, but they have a backup when it come to reproduction. I guess we know where their priorities lie, huh? lol

[ConcinusMan]

T. ordinoides. FEMALE 13 inches. Notice her thickness changes immediately after the vent. Tail is short. Indicates female. With ordinoides, females tend to have thick bodies (even when not gravid) while males are slim. Females also get much larger than males. Older adults near max size are easy to sex on first sight.



Another T. sirtalis concinnus. MALE 26 inches. Vent at red arrow. Notice the thickness of the snake doesn't immediately change after the vent and his tail is very long. Indicates male. Females vent to tail tip distance is much shorter for a snake of the same size. Females tend to have broader heads than males. In the wild, the very large concinnus (38-42 inches) have always been female in my experience.