Sexing

SEXING THROUGH THE STUDY OF THE EXUVIA

The spermatheca in circle. The four white spots are the area which the booklungs are placed.

Close up of a spermatheca
A) Spermatheca.
B) Uterus externus (‘upper lip’).
C) Lower lip.



Fused spermatheca. Brachypelma got a fused spermatheca.


Paired spermatheca. For example Lasiodora got a paired spermatheca.


Male – Brachypelma vagans. These two glands that some species have can be mistaken for spermatheca.
Look for a uterus externus (‘upper lip’) and lower lip. Males lack these.

Male – Haplopelma minax.

Spermatheca in circle. Aphonopelma seemanni

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