Are Hellgrammites Attracted to Light?

Robert Thorne
Robert Thorne
• • 6 min read

The Short-Lived Adult Dobsonflies Dobsonflies the Adult Dobsonfly Is a Large Insect up to 140 Millimetres Long with a Wingspan of up to 125 Millimetres. the...

Are Hellgrammites Attracted to Light?

The short-lived adult dobsonflies

dobsonflies
The adult dobsonfly is a large insect up to 140 millimetres long with a wingspan of up to 125 millimetres. The female has short powerful mandibles of a similar size to those of the larva while the mandibles of the male are sickle-shaped and up to 40 millimetres long, half as long as the body.
› wiki › Corydalus_cornutus
are among the largest flying insects in Texas. ... Adult dobsonflies are terrestrial and seek shelter in tree canopies near water. They hide by day under leaves, are weak fliers and are attracted to lights.

What are hellgrammites attracted to?

Since the adults live only about a week, they are not known to eat anything, although they have been reported to drink sweet solution in captivity. The dobsonfly may be attracted by mercaptan, an indicator additive in natural gas and propane, and may behave as an animal sentinel in the presence of these gases.

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What do hellgrammites eat?

Hellgrammites are predaceous and snatch nearly anything that swims or ambles by, including aquatic insects and small fish.

Robert Thorne

Robert Thorne

Automotive & Future Transportation Editor
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Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.