compound which was lethal to 50 of either the adult or egg population in the test the entries in table ii were obtained as follows in each test the initial test compound solution contained 0 05 by weight of the test compound those compounds showing less than 50 kill at this level are represented in the table by the figure 34 0 05 34 preceded by a 34 greater than 34 sign gt those compounds showing approximately 50 kill are represented by the figure 34 0 05 34 alone those compounds showing greater than 50 kill were subjected to further testing at successively lower levels until the level was found at which approximately 50 kill was achieved the latter level is listed as the ld 50 for this group the primary screening level of 0 05 was selected for purposes of convenience only and is not intended to be understood as representing the highest level at which a viable test for miticidal activity can be conducted dashes are used in table ii where no tests were performed at all table ii______________________________________miticidal activity approximate ld sub 50 values weight in test solution compound post embryonic mitenumber mites eggs______________________________________1 gt 05 052 05 006 sup a 3 gt 05 034 sup b 0085 05 ______________________________________ sup a average of two trials sup b host plant died the compounds of this invention are generally used in formulations suitable for convenient application in general such formulations will contain inert of occasionally active ingredients or diluent carriers in addition to the active compound examples of such.