I found this crane fly (family Tipulidae, possibly of the genus Nephrotoma) resting on an American red raspberry leaf (Rubus ideaus, Rosaceae) in my garden. If this insect looks like a giant mosquito, that’s unsurprising: they’re both in the suborder Nematocera within the order Diptera (true flies).
Unlike mosquitoes, crane fly females don’t feed on blood. Adults feed on flower nectar, if they feed at all. The adult forms of these insects are primarily engaged in mating and egg laying. What feeding is done only serves to prolong this activity. The crane fly above is a female (note the ovipositor), and may be taking a break from feeding or mating. Or she may be dying…it’s pretty late in the season.
The larvae of many crane flies are aquatic, and resemble fat juicy worms or leeches. It’s amazing that these plump larvae can pupate and become such thin delicate flies.