insects pack by colonel well 

find in editor under  independent - colonel well's addon - cw_alienscorpio
                                                                               - cw_antnest ( under empty )
                                                                               - cw_biggiantant
                                                                               - cw_giantant
                                                                               - cw_gray
                                                                               - cw_troopersbugs
                                                                               - cw_alienwasp 


no commercial blablabla , but it's a free and open addons you can change and modifi it if you want .

by colonel well 