tera . ▁Pale ar ctic ▁habit ats ▁include ▁me adows , ▁pra i ries , ▁ ▁mountain ▁passes , ▁for ests , ▁desert ▁o ases , ▁se ash ores , ▁sand y ▁be aches , ▁coast al ▁l ago ons , ▁la kes , ▁streams ▁and ▁rivers , ▁b ogs , ▁f ens , ▁areas ▁( including ▁waters ▁poll uted ▁by ▁ro tt ing ▁waste , ▁industrial ▁em issions ), ▁urban ▁areas , ▁cattle , ▁horse ▁and ▁p oul try ▁far ms . ▁ ▁C ave ▁D ip tera ▁see ▁also ▁List ▁of ▁fa una ▁of ▁B atu ▁C aves ▁The ▁D ip tera ▁fa una ▁of ▁c aves ▁includes ▁species ▁in ▁S pha er oc er idae , ▁My c et oph il idae , ▁Psych od idae , ▁Ph or idae , ▁T ip ul idae , ▁Tr ich oc er idae , ▁He le om yz idae , ▁My c et oph il idae ▁and ▁C ul ic idae . ▁ ▁The ▁main ▁sources ▁of ▁food ▁for ▁cave ▁D ip tera ▁are ▁other ▁insect s , ▁car r ion ▁and ▁gu ano . ▁Most ▁are ▁perhaps ▁only ▁tro g lo ph iles . ▁ ▁Des ert ▁D ip tera ▁Des ert ▁dip tera ▁include ▁special ised ▁species ▁of ▁ ▁Psych od idae , ▁Nem estr in idae , ▁There v idae , ▁Sc en op in idae ▁and ▁Bom by li idae . ▁These ▁groups ▁are ▁most ▁diverse ▁where ▁dry ▁sand y ▁so ils ▁provide ▁a ▁suitable ▁habitat ▁for ▁the