A few Carabidae

I especially like the unit tray with the large Mouhoutie and Pasimachus (?).

Those are both ferocious looking genera !

Also, you have done quite well in securing those 9 specimens of Amblychiela. I have read there are 8 species from the southwest. Are these all A. cylindriformis ?

Very well done capturing those...

Ground beetles (Carabidae) are somewhere amongst the
top 5 or 6 largest families of beetles. At somewhere
in the neighborhood of (near) 30,000 described species
there are certainly bound to be some popular genera
with beetle enthusiasts and perhaps even some with a
"cult-like" following.

I have always been more of a "casual" beetle enthusiast
usually focusing only on the obvious things about me or
(very nearly underfoot) whilst doing field work. So, my
personal holdings of captured carabids (throughout my whole
collection) probably only amount to a half drawer. Maybe,
another half drawer of purchased exotics.

So, unfortunately my participation here is rather limited
but, where I can get some pic's of things I will "pop-in"
to enhance discussions.

*Of note, about half my material is nicely spread in "lifelike"
walking or "attack" positions; because, after all were talking
about PREDACEOUS ground beetles! However, some things which I
may post have not yet been given my attention so they remain
field pinned or research pinned -- with their legs (tucked) close
to their sides.

Below, I offer up a nifty species of Pasimachus which I
have picked up only 7 or 8 times in total. The demeanor
of this purple-edged black apparition was ferocious...
You don't dare handle these larger carabids because if
those short mandibles get a fold of your skin you will
jump; and it won't be for joy !

trehopr1, Regarding Megacephala, here in Louisiana we have two species in this genus. Megacephala (Tetracha) carolina (L.) (a rainbow colored species) is actually the most abundant of the known 29 species of Tiger beetles for Louisiana. Another species Megacephala (Tetracha) virginica (L.) is much less abundant and a deep green color. You can see the super abundant M. carolina, upper row in this handy attached photo. 

A couple of new additions:
Mormolyce phyllodes phyllodes (www.flickr.com/photos/194256110@N07/51907252035/in/dateposted-public/)
Mormolyce hagenbachii (www.flickr.com/photos/194256110@N07/51915401991/in/dateposted-public/)
Anthia sexguttata (www.flickr.com/photos/194256110@N07/51915497503/in/dateposted-public/)

I've noticed the population swings up here too. I think the last time I saw either species in any numbers was T. virginica in 2019

Pasimachus sp. -

texasento.net/Pasimachus.htm