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Species Chauliodes pectinicornis - Summer Fishfly

Fishfly larva - Chauliodes pectinicornis Fishfly - Chauliodes pectinicornis - male Summer Fishfly - Chauliodes pectinicornis - male Fishfly - Chauliodes pectinicornis dobsonfly or fishfly? - Chauliodes pectinicornis Eaerly morning discovery. - Chauliodes pectinicornis Summer Fishfly - Chauliodes pectinicornis Chauliodes pectinicornis - female
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
Genus Chauliodes (Fishflies)
Species pectinicornis (Summer Fishfly)
Synonyms and other taxonomic changes
Chauliodes pectinicornis (Linnaeus, 1763)
Explanation of Names
The specific name, "pectinicornis", means "comb-horned". The common name was coined based on typical seasonal occurrence in the east, in contrast with the "Spring Fishfly", C. rastricornis.
21-46mm body length (not including wings).
Both sexes have pectinate antennae. Flies, probably, more in mid to late summer than the more spring-flying C. rastricornis. Head and pronotum have yellow markings on dark brown background, compared to dark markings on yellowish background in C. rastricornis. See A Guide To The Megaloptera And Aquatic Neuroptera Of Florida. (1)
Eastern and central North America, including southern Canada
Near ponds, lakes, quiet parts of streams. (Contrast this with Dobsonflies, which inhabit streams as larvae.) Adults come to lights.
Typically Summer: May-August (North Carolina), June-July (West Virginia). Further south, spring and summer (Florida).
Adults may take some plant juices, since they come to "sugar", i.e., moth bait, according to Brimley. (2)
Life Cycle
Larvae aquatic, omnivorous: detritivores, or herbivores, also predatory on other invertebrates. Larvae tend to live in calm bodies of water with lots of detritus. Larvae leave the water to pupate under bark, inside rotting logs. Pupation takes approximately 10 days. Adults emerge to mate, live perhaps a week. There appears to be just one flight per year, and the life cycle may be just one year, though older references quote a 2-3 year life cycle. Eggs are laid in masses on vegetation near still bodies of water. Larvae hatch and crawl to water.
See Also
Chauliodes rastricornis--usually flies in spring, note difference in markings
Print References
Arnett p. 345 (3)
Brimley p. 28 (2)
A Guide To The Megaloptera And Aquatic Neuroptera Of Florida, pp. 12-15 (1)
Milne p. 521, fig. 329 (4)
Taber and Fleenor (5)
Internet References
Aquatic Insects of Michigan--keys two species.
Works Cited
1.A Guide To The Megaloptera And Aquatic Neuroptera Of Florida
2.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
3.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
4.National Audubon Society Field Guide to Insects and Spiders
Lorus and Margery Milne. 1980. Knopf.
5.Insects of the Texas Lost Pines (W.L. Moody, Jr., Natural History Series, No. 33)
Stephen W. Taber, Scott B. Fleenor. 2003. M University Press.