53a (52a).    Antennae long, with many segments; abdomen with at least 9 segments and with

stylelike appendages on ventral side of some segments; without a forked appendage near

end of abdomen, but with well developed cerci (Figs.A-C) ..........................…........…........Diplura

 

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                                                    A                               B                                C

 

 

 

53b.    Antennae short, with 6 or less segments; abdomen with 6 or less segments and usually with

           a forked appendage near posterior end (Figs.A-G) [springtails] ………………........….…Collembola

 

 

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                           A                                                             B                                                     C

 

            

                                        D                            E                              F                             G