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Because "chilobrachys metallica" would be a sick abomination. By the Holy Code, the only acceptable potential combination is "chilobrachys metallicus"! :troll:

To seriously prove / disprove bias in sex ratio one would literally need to sex not dozens, but hundreds of spiders. For example, for sample size of 20 specimens, observed numbers of 6 to 14 males (30-70 %) would fully statistically match expected 50:50 ratio. For sample size of 100 specimens...

@lindale450 Your isopods are Porcellio spinicornis, species commonly recorded across Alberta :) P. haasi looks a bit different and it is a rare huge species endemic to Spain...

They like to connect their webs to the ground (it is their main hunting strategy in wild), so keeping this in mind it is ok to have no substrate, solid layer of soil or clay or bigger pieces (stones, pebbles, bark). I would avoid loose substrates such as sand, peat etc.

It is T. epicureanus :D Tliltocatl epicureanus and Brachypelma epicureanum are the correct combinations, Tliltocatl epicuranum is an error that was later corrrected... :)

Janalychas tricarinatus, Serradigitus miscionei and Pseudolychas ochraceus have been published to be parhenogenetic in literature since. The first species is quite common in hobby now. It is very likely that parthenogeny will be found in much more species, especially in case of tropical buthids.

@Wayfarin Neocaridina shrimps can be kept without any technology. I have succesfully kept them and bred them that way. - filter is not needed in well working aquarium, and shrimps have quite low production of waste. air pump also is not needed - heater is not needed, Neocaridina shrimps came...

Nope, they cant chirp. But they do loud hiss, hence their name :D

Nope, smithi is valid name, but it belongs to different species than it used to be used for. In short: Common hobby species, called smithi in hobby in past, was found out to be in fact hamorii. Rare species, called annitha in hobby in past, was found out to realy be true smithi. old hobby...

Very nice spiders, You got quite a collection here. :) As for temperament, I think that there is lot of variation between individuals and it is not possible to rely on species generalisation. I keep 0.1 beohmei, 0.1 emilia, and 2.2 hamorii. I always read about boehmei being very skittish and...

Of course there is - Turner et al. 2017(2018). It is the same work that firts showed that there actually are two genera within Brachypelma. :)...

For years I have succesfully kept ten species of tropical roaches, including G. portentosa, and except for Lucihormetica and Panesthia kept all of them dry. You generally only needs to care for humidity for egg laying species or sensitive species. Neither is the case with portentosa. I am not...

D. - I ve always kept them bone dry. :D

We unfortunalely know very little about these spiders, and many others... As for labeling, it is definitely necessary to keep such spiders separated until taxonomy is clarified. Better safe than sorry, once we mix something there is no way back... As for this case, I consider it very likely...

It is a normal male. They do have the same body shape as females until mature, this seems to be sub-adult.

Agree with Liquifin, seems to be Latrodectus male.

@tarantulas118 @BoyFromLA We know that what we call "Aphonopelma" nowadays are actually several different genera. Once revised most of them wont be Aphonopelma anymore :D

You will find quite a lot of gynandromorph theraphosids online :) http://www.theraphosidae.be/en/vogelspinnen/abnormalities-in-theraphosids/ I really like this article on P. murinus gynandromorph, it succesfully molted one more time after ultimate molt of male side :)...

Man, using Your dog analogy, asking for refund on invert two months after purchase is a bit like asking for refund on dog that died of cancer ten years after purchase :D

AFAIK you are not allowed to post pictures that are not yours, just post links next time... To me those picture show variation of light conditions, camera types and settings, rather than variation of G. pulchripes. Last one seems to be photographed postmolt.