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Species Chauliodes rastricornis - Spring Fishfly

Whatzit - Chauliodes rastricornis - male Spring Fishfly - Chauliodes rastricornis Fishfly - Chauliodes rastricornis Spring Fishfly (Detail) - Chauliodes rastricornis - male Possible Fish Fly - Chauliodes rastricornis Spring Fishfly - Chauliodes rastricornis - female Chauliodes pectinicornis? - Chauliodes rastricornis Chauliodes rastricornis - male
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
Species rastricornis (Spring Fishfly)
Explanation of Names
Chauliodes rastricornis Rambur 1842
rastricornis = 'rake-horned'
Head and pronotum have dark markings on light brown background, as opposed to yellowish markings on dark brown background of C. pectinicornis. Antennae of females are serrate, while those of males are pectinate. A Chauliodes with serrate antennae should be a female C. rastricornis. Also, note earlier flight (spring) of C. rastricornis in most of the east. C. pectinicornis typically flies in summer.

The antennae of females are serrate (saw-like):

The comb-like, (pectinate) antennae of the males are quite obvious, see, for instance:
e. NA; more common in subtropical Florida than C. pectinicornis.
Near calm bodies of water with detritus.
Adults typically fly late spring: March?-May (North Carolina), April-May (West Virginia). Seen into June and even early July in New England (see Massachusetts records). Further south (Florida), this species is seen much of year.
Adults have been recorded feeding on sugary and fermented solutions in laboratory settings.(1)
Life Cycle
Larvae omnivorous: detritivores, herbivores, predators. See account for C. pectinicornis.
See Also
C. pectinicornis, summer fishfly, which flies later in season (with some overlap). Identification section above has more details on how to separate these two species.

Summer Fishfly vs Spring Fishfly
Print References
Taber and Fleenor (2)
Salsbury and White, p. 154 (3)
Works Cited
1.The Megaloptera and Neuroptera of Minnesota
Sophy I. Parfin. 1952. The American Midland Naturalist, 47(2): 421-434.
2.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.
3.Insects in Kansas
Glenn A. Salsbury and Stephan C. White. 2000. Kansas Dept. of Agriculture.