For most collectors, acquiring a female spider is
important. Why? Yes, because they can live much longer than the male... But, to
some other Collector/Breeder, would very much like to have male for breeding
purposes. Little that we know, in market, for some specific species, male
specimen are difficult to find, which can lead into shortage in that particular
species, at lease in captivity. I don’t know why? But maybe because everyone
tends to only kept female spider? For keeper, please learn to sex your spider,
you want female so much, but don’t even bother to learn how differentiate them,
and keep posting “Sex Please/Help Me! /Male or Female? / Dude or Chick? At
least try your best to sex them first and seek for confirmation. Come on you
guys!!! It’s only either male or female, I hope... (Except human: we have
muscular gay, petit lesbian, sexy transsexual, animalistic bisexual, NOTE: gay
+ gay or etc. can be mated with any specific skills, but will not producing any young-lings...haha).
It’s not that hard, there are a few way to sex your specimen, each method may
have their own pros and cons.
Exuvia or molt skins are the most accurate and most
definitive way to sex your tarantula. This method can be use when your spider
reaches juvenile or larger stages. This is because; we need to allocate the
spermatheca between the anterior book lung, which look like a flap that use to
store the sperm deposited by male specimen during mating, the spermatheca is
not uniform in shape, they are differ from one species to another. That why we
got “Spermatheca Gallery” in Malaysian Tarantula Society FB Group Page.
Haaa...Find it! This method only require you to collect the molt skin after the
molting process is over, no need to neither handle or disturb the specimen
especially the bad-tempered one. But if
it, a New world species, you have a chance to have a taste of Urticating Hair
(Been there, done that)…Haha. I would recommend you to make yourself a homemade
small 1’x 1’ lighting box for your aid. Open the light and put the Exuvia on
the box. It will help you, if the spider is in early stage of juvenile.
*Ventral Method
Sexual Dimorphism can be trace if the spider already
in its ultimate molt (Mature male or female) where male can be very differing
to female:
Exuvia of a 0.1 juvenile Brachypelma klassi (Schmidt & Krause, 1994) |
*Exuvia Method
*Ventral Method
If your tarantula keeps munching on its molt skin,
then the ventral sexing can be done. These refer to inspect of the bottom of
the tarantula abdomen, on the area of the Epigastric Furrow which also located
between the anterior book lungs. Female tend to have longer curvy Epigastric
Furrow while male are shorter and almost a straight line, and the distance
between book lung for female is wider than male. This method is not 100%
accurate; this is more like comparison method.
You may need certain time of practice, a lot of sexing and a pair of
eagle eye or some viewing enhancement tools.
*Dimorphism Method
Dead Specimen of a 1.0 Psalmopeous irminia |
Mating
Hooks & Embolus Bulb:
Physical Appearance:
For some specific species or genus, mature females often to have
a stockier/larger/heavier/huskier body than the small/thin/undersize mature
males. The male’s abdomen is usually smaller and they possessed long leggy
legs. Different coloration also occur in some genus or species, for example: Psalmopeous
irminia are differ from male and female by coloration, which female are
distinguish in color and the male are not.
Sexing a spider can be a lot of fun and pleasurable,
why don’t you all give it a try; it’s always surprising to know the sex of your
spider, wait for the incoming molt! Get some RM2 magnifying glass or worse, RM XXXX microscope for your aids. Keeping spiders as pet is not always about having a
rare species, but the knowledge and the experience you may obtain from the
hobby is what that count. It is PRICELESS!
Now, go do your research and have some fun!
Cheers!