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Family Corydalidae - Dobsonflies and Fishflies

Larva - Chauliodes rastricornis Fishfly or Dobson fly ? - Neohermes Neohermes angusticollis, I believe. - Neohermes - female Bug found in the woods Family Corydalidae Dobsonfly - Chauliodes pectinicornis Corydalidae Larva along Ausable River 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)
19 spp. in 7 genera in our area(1)
25-80 mm; Corydalis cornutus males can have a 14 cm wingspan and bear elongate sickle-shaped mandibles >4 cm long(1)
large insects with soft bodies and delicate wings
key characters:
wings folded flat over back at rest
ocelli (simple eyes) present
fourth segment of tarsi rounded (flattened in Sialidae)
antennae variable: may be filiform (thread-like), moniliform (like beads on a string), serrate (toothed), pectinate (comb-like)
males of some species have enlarged mandibles, presumably used in competition for mates
eastern genera: Chauliodes, Corydalus, Neohermes, Nigronia
western genera: Neohermes, Dysmicohermes (nw. NA), Orohermes (Pacific coast), and Protochauliodes (w. US; Australia, New Zealand, Chile)
Larvae are aquatic.
Adults are terrestrial but often found near aquatic habitat of larvae, and may come to lights.
Larvae feed on aquatic insects, tadpoles, and small fish.(1)
Adults either do not feed, or feed on small quantities of nectar and fruit juices.(1)
Life Cycle
The aquatic larvae go through 7-8 instars and take 2-3 years or longer to reach maturity.
Print References
Works Cited
1.Species catalog of the Neuroptera, Megaloptera, and Raphidioptera of America North of Mexico
Penny N.D., Adams P.A., Stange L.A. 1997. Proc. Calif. Acad. Sci. 50: 39-114.
2.Aquatic Insects of California
Robert L. Usinger, Editor. 1956. University of California Press.