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

Calendar
Upcoming Events

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

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowse
Info
ImagesLinksBooksData

Genus Chauliodes - Fishflies

DobsonFly - Chauliodes rastricornis - male Corydalidae: Chauliodes? - Chauliodes rastricornis - male Large Stonefly? - Chauliodes rastricornis Spring Fishfly (Chauliodes rastricornis) - Chauliodes rastricornis What is this? - Chauliodes rastricornis fishfly - Chauliodes pectinicornis Who is this? - Chauliodes rastricornis Spring Fishfly - Chauliodes rastricornis - female
Classification
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 (Fishflies)
Explanation of Names
Chauliodes Latreille 1796
Greek 'remarkable tooth', refers to larval mandibles:
Numbers
2 spp. total, both in our area(1)
Size
body 21-46 mm
Identification
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)
Range
e. NA; both spp. widespread(1)
Habitat
larvae in slow-moving waters with lots of detritus, esp. decaying logs(1) (unlike Corydalis, associated with streams)
Season
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)
Food
Larvae aquatic, omnivorous(1); adults may not feed, though have been reported coming to moth "sugar"(3)
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.