Whee 4) =~ The wasps normally are not aggressive and do not seek out or attack.people. The sting is in accordance with most polistene .— type stings with a wheel-flair reaction and pain lasting from ten - twenty minutes. "In Masse" attacks were not reported although some people recalled being stung 4 or 5 times. . One- | report of 20 stings could not be confirmed and is considered unlikely. It should be noted that aggressive reactions were © .- only noticed when the integrity and safety of the colony or nest was directly threatened. ) — No mosquitoes were collected though light traps, natural and artificial nesting stations were used. Furthermore, interviews indicated no one has been bitten by a mosquito. High winds are the major factor restricting the establishment of mosquito populations, Spiders are present throughout the atoli's islets. . Specimens of what appears to be the black widow have been collected by personnel of the MPML though none were found during this survey. ‘The only island - reporting the collection of L, mactans is Enjebi (Jane). Specimens have been sent to the Bishop Museum, Hawaii for confirmation. No — other venomous spiders have been reported from or collected from the islets. Snakes are not present on Enewetak Atoll. Flies affecting man appear limited to several species of the genus Musca or house flies and sarcophaga (flesh flies). In most cases the breeding areas are in and around waste disposal sites. Populations are smal] and of nuisance value. Some transmission of enteric diseases is possible though not likely.due to good sanitary practices and structural integrity of buildings. r RECOMMENDATIONS: a. The rodent populations require control of the earliest possible date. Baiting with zinc phosphice is the most acceptable to this writer. other baits are available. A Special annex to this report will be prepared with specific guidelines on baiting requirements. However Bait stations containing zinc phosphide in a formulation acceptable to the rats should be used. Several prebaits should be tested without the presence “of zinc phosphide to determine which is the most acceptable to the rats. Upon completion of prebaiting the actual zinc phosphide bait should be employed. Each islet should be prebaited immediately prior to baiting.