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Genus Neohermes

Possibly a webspinner? - Neohermes Orange-headed fishfly - Neohermes concolor Spread-winged megalopteran - Neohermes concolor Brownish moth on house - Neohermes californicus Orange-headed megalopteran - Neohermes concolor Fishfly - Neohermes filicornis - female Neohermes filicornis? - Neohermes filicornis Megaloptera? - Neohermes concolor
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 Neohermes
Synonyms and other taxonomic changes
formerly treated as part of genus Chauliodes
Explanation of Names
Neohermes Banks 1908
Neohermes = 'new' + Hermes (a related Old World genus)
Numbers
6 spp., all in our area(1)(2)(3)
1. Neohermes angusticollis: southeastern (GA, NC, SC)
2. Neohermes californicus: western (ne. CA, w. NV, s. OR)
3. Neohermes concolor: widespread eastern (AR, DC, DE, GA, IL, IN, KS, KY, MA, MD, MO, MS, NC, NJ, NY, OK, OK, PA, TN, ne. TX, va, vt)
4. Neohermes filicornis: western (AZ, coastal CA, NM)
5. Neohermes inexpectatus: CA
6. Neohermes matheri: MS
Size
head to wing tips 35-55 mm, body 25-35 mm, wingspan 85-105 mm
Identification
Body and wings dark, wings mottled gray. Antennae moniliform (versus pectinate or serrate in Chauliodes), in males with ring of erect hairs on each segment. Hind wing venation differs from Chauliodes.


Overview of Species
Keys to adult males: Bowles & Mathis (1992) (eastern spp.)(2) and Liu & Winterton (2016) (Nearctic spp.).(3)


N. angusticollis


N. californicus


N. concolor


N. filicornis


N. inexpectatus

N. matheri
Range
nearctic genus (3 spp. in e. US + 3 spp. in w. US)(1)(3)
Habitat
appear to prefer streams (versus Chauliodes prefer still water)
Season
N. concolor in OK: Jun-Aug; N. angusticollis Piedmont in NC: Jun(4); N. californicus in n. CA: May(5)
Life Cycle
Larvae in leaf litter at bottom of small streams. N. californicus is known to wait out dry seasons buried in mud as first instar larva.
Remarks
N. concolor is the only widespread species in the East. N. angusticollis is known from NC, SC, and GA; N. matheri only from MS.(2)(3)

A new 6th species, N. inexpectatus from California was described in 2016.(3)
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.Variation in the terminalia of Neohermes concolor with a key to males of Neohermes in eastern North America
Bowles D.E., Mathis M.A. 1992. Insecta Mundi 6: 145-149.
3.A New Fishfly Species (Megaloptera: Corydalidae: Neohermes Banks) Discovered from North America by a Systematic Revision
Xingyue Liu & Shaun L. Winterton. 2016. PLoS ONE 11(2): e0148319.
4.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
5.California Insects
Jerry A. Powell, Charles L. Hogue. 1989. University of California Press.