Wolf Spider? ventral and dorsal - Tigrosa annexa

Moved

Moved from Tigrosa.

… Laura P., 1 February, 2014 - 11:33am

Moved

Moved from Tigrosa helluo.
This might be an immature male Tigrosa annexa. I'd like to move it back to genus for now until we're more familiar with the species.

… Laura P., 6 September, 2013 - 10:27am

Moved

Moved from ID Request. I'm pretty darn sure these are all Hogna helluo. This one appears to be a juvenile male. If you don't mind keeping track of your population I'd like to see a mature female and a mature male when you can find one. It may be a while before you can find mature spiders... they are supposed to be mature May-Sept.

… Lynette Elliott, 19 December, 2012 - 8:23am

More questions

Hi, excuse my ignorance once again please, it's vast. How do you tell female from male and juvenile from adult? How long do these live? This particular spider (or one just like it) has resided behind the baseboard of my bathroom for several months and is definitely on the small side from what I have observed of this species. I don't really mind spiders in the house as we have so many bugs here in Arkansas the spiders are a sort of pest control of even less desirable critters. Thank you for taking the time to respond.

… Pete Johnson, 19 December, 2012 - 10:20am

Male from female, juvenile from adult

You will find a nice explanation of sexing spiders on the Spiders info page here.

Telling adult from juvenile can be a little trickier, but if you have a good view of the palp or the area where the epigyne should be it's fairly easy. An adult female will have an epigyne (and sometimes a scape coming off the epigyne)... a juvenile female will not. Compare an adult to a juvenile female here:

Telling an adult male from a juvenile male you will notice that adult males have developed palps.... or they have bumps, grooves and/or points on their palps. Juvenile males have smooth palps. Compare and adult to a juvenile here:

Looking at the ventral view of your spider it appears to have slightly enlarged palps, so that makes it a male. They don't look fully developed so that makes it a juvenile.

… Lynette Elliott, 19 December, 2012 - 4:20pm