Hi Mike,
Sounds like you are talking about one of those blue bug zapper type bulbs.
Why not have a go with just a normal white bulb 12 volt "versa" style fluro light first. They seem to attract a fair few insects when camping.
They only draw about 1 amp, so relatively small 12 volt battery, trickle charger and solar panel would do the job. You could try it out first with a spare car battery (conventionally charged) to see if it works before spending all the dough on the solar panel and charger.
Cheers
Jeff
PS Head lamp and a 7 iron still seems good enough to me for those buggers. >
Need a bit of loft to clear the back fence.