Are fireflies harmful to farm crops?

With so many lightning bugs around, I just wondered if they damage crops.

Answers:
Most firefly larvae are found in rotting wood or other forest litter or on the edges of streams and ponds at night. Some Asian species are fully aquatic (due to the presence of tracheal gills) and live underwater, feeding on aquatic snails. The larvae of several tropical firefly species in the genus Pyractomena are strictly arboreal, feed on arboreal snails and pupate while hanging under living leaves - similar to a butterfly chrysalis (Lloyd 1991).

Adult fireflies are found in the same general habitats as their larvae. Generally speaking, the highest number of firefly species are found in warm, humid areas of the world. Some species, however, are found in very arid regions of the world. In these arid regions, larvae and adults can be readily found following rains. The greatest number of firefly species (highest species diversity) are found in tropical Asia and Central and South America.

Firefly Larvae are predaceous and have been observed feeding mostly on earthworms, snails and slugs. Larvae can detect a snail or slug slime trail, and follow it to the prey. After locating their future meal, they inject an anesthetic type substance through hollow ducts in the firefly's mandibles into their prey in order to immobilize and eventually digest it. Multiple larvae have also been observed attacking large prey items, such as large earthworms. Other observations suggest larvae sometimes scavenge dead snails, worms and similar organic matter.

Adult Fireflies also have mouth parts suggestive of predation (long sickle-shaped mandibles). Although it is widely known that fireflies of a few species mimic the mates of other species in order to attract and devour them, observations of adults feeding on other prey items are practically non-existent. It is likely however, that adults might feed on plant nectar in order to sustain their energy requirements in the adult stage, which can last several months or longer).

Other answers:
Not all insects are harmful to your garden. Ladybugs, fireflies, spiders and wasps to name a few keep harmful insects from devouring your plants. Beneficial bugs also help to pollinate your plants and decompose organic matter.
Not all insects are harmful to your garden. Ladybugs, fireflies, spiders and wasps to name a few keep harmful insects from devouring your plants. Beneficial bugs also help to pollinate your plants and decompose organic matter.
No, as kids, we used to catch them. They never bit or anything.
I have never herd that they were, don't think so
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