Species of the asilid genus Hyperechia Schiner, 1866 (type species Laphria xylocopiformis Walker, 1849) are known to mimic carpenter bees of the genus Xylocopa (Hymenoptera: Apidae). Hyperechia is mainly Ethiopian in its distribution, only two of the about seventeen descriptionbed species being distributed in SE Asia. The larvae are predacious on those of Xylocopa, while the adults are known to feed mainly on aculeate Hymenoptera (see Poulton, 1924) ; a specimen of H. d. bifasciata from Pretoria, has attached a note reading ""caught honey bee"" (see also Van Someren in Poulton, loco cit.).
Investigations were conducted for developing alternative measures for the control of hodotermitid harvesters in the karroid areas of the Republic of South Africa, where the standard practice of spreading poisoned grass bait is uneconomic. In the limited areas of the Karoo where mounding occurs over the nest sites of M. viator it was established that adequate control at low cost may be obtained by injecting Aldinel directly into the nests.
At the outset I want to mention an incident that took place in 1900, some seven years before my return from Australia. Mr Mally, then Assistant Entomologist at Cape Town, found a consignment of nursery stock from Australia to be infested with pernicious scale and also the black peach aphid, two pests which at that time were not known in South Africa. Although in those days no import permit was required, the trees were subject to inspection.