Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Genus Chauliodes

Fish Fly sp. - Chauliodes Brown gossamer winged moth - Chauliodes pectinicornis Stonefly - Chauliodes rastricornis - male fishfly - Chauliodes pectinicornis Summer Fishfly (Chauliodes pectinicornis) - Chauliodes pectinicornis - male Chauliodes rastricornis ? - Chauliodes pectinicornis - male Insect - Chauliodes rastricornis spring fishfly larva - Chauliodes rastricornis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Megaloptera (Alderflies, Dobsonflies, and Fishflies)
Family Corydalidae (Dobsonflies and Fishflies)
Subfamily Chauliodinae (Fishflies)
Genus Chauliodes
Explanation of Names
Chauliodes Latreille 1796
Greek 'remarkable tooth', refers to larval mandibles:
2 spp. total, both in our area(1)
body 21-46 mm
Similar to Corydalis but pronotum differently shaped and jaws less prominent. Neohermes have bead-like (moniliform) antennae (not serrate or pectinate).
How to separate species:(1)(2)
Mid-dorsal markings on head, pronotum, abdomen: dark on pale background in C. rastricornis vs pale on dark background in C. pectinicornis
Antennae: pectinate (feather-like) in both sexes in C. pectinicornis but only in males of C. rastricornis (its females have serrate antennae)
In lateral view of male abdomen, anal plate is triangular in C. rastricornis, cylindrical in male C. pectinicornis.
Flight date: In much of range, C. rastricornis flies earlier in the season (e.g., Mar-May in NC) than C. pectinicornis (e.g., May-Aug in NC)(3), although flight dates may overlap deep south (FL)
Larvae: Mid-dorsal abdominal line black in C. rastricornis, yellow in C. pectinicornis(1)
e. NA; both spp. widespread(1)
larvae in slow-moving waters with lots of detritus, esp. decaying logs(1) (unlike Corydalis, associated with streams)
Spring-summer; in FL, adults of the more common C. rastricornis collected year-round, whereas adults of C. pectinicornis occur primarily during spring & summer(1)
Larvae aquatic, omnivorous(1); adults have been recorded feeding on sugary and fermented solutions in laboratory settings(4)
Life Cycle
Both spp. are univoltine. Larvae leave the water to pupate under bark or in rotting wood; pupal period takes ~10 days. Adults live a week or less. Eggs are laid in masses on vegetation near water. Larvae hatch and crawl to water.(1)
Works Cited
1.A guide to the Megaloptera and aquatic Neuroptera of Florida
Rasmussen A.K., Pescador M.L. 2002. Florida Dept of Environmental Protection, Div. Water Resource Management. Tallahassee. iii+45 pp.
2.Bright E. (2002-2011) Aquatic Insects of Michigan
3.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
4.The Megaloptera and Neuroptera of Minnesota
Sophy I. Parfin. 1952. The American Midland Naturalist, 47(2): 421-434.