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Genus Chauliodes

Spring Fishfly - Chauliodes rastricornis - female Corydalid at Lights - Chauliodes pectinicornis Fishfly - rear - Chauliodes rastricornis - male Chauliodes rastricornis - male Spring Fishfly (Detail) - Chauliodes rastricornis - male Fishfly - Chauliodes rastricornis - male Corydalidae, Spring Fishfly, head - Chauliodes rastricornis - female fishfly - 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 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.