Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

> > Northern Delaware River - Hellgramite Goldmine

This topic is about the Hellgrammite Genus Corydalus

The largest and most well-known hellgrammites belong to this genus, although in my collecting experiences the fishflies of Nigronia seem to be more common in trout streams.

The Discussion

YemossMay 29th, 2007, 10:02 pm
Posts: 1Far from a fly-fisherman, I still wanted to identify a menacing- looking insect which invaded our late-night campfire council this past Memorial Day Weekend in Millford, PA on the Delaware River (cr 206 n). We stayed at Kittatiny Canoe Campgrounds, very commercial, but made the best of it. The amount of these bugs crawling around at night, lured by our glowing fire, was incredible. Today I identified them as Hellgramites, and also learned that they are prized by bass and trout. Didn't even think to bring a pole with the short weekend - we went rafting instead. Still wanted to inform fellow fisherman of the abundance and location of this critter. Important to note that our sites bordered the river - one website I read indicated that Hellgramites won't go more than 50 yards inland from their water source; I'm not sure if that's common to most aquatic species but I'd imagine so.
WbranchJuly 22nd, 2007, 8:04 am
York & Starlight PA

Posts: 2733
I think the adult, winged insect, is called a Dobson Fly. They seem attracted to light and fly around in the night and can scare the heck out of you as they have big wings and pincers.
Catskill fly fisher for fifty-five years.
GONZOJuly 22nd, 2007, 8:21 am
Site Editor
"Bear Swamp," PA

Posts: 1681 website I read said that Hellgrammites won't go more than 50 yards inland from their water source....

Yemoss, that may have been referring to the travels of the Dobsonfly larvae (hellgrammites); they pupate terrestrially. Many adult aquatic insects are attracted to lights, often quite some distance from stream or lake.

Quick Reply

You have to be logged in to post on the forum. It's this easy:
Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.

Related Discussions

TitleRepliesLast Reply
Re: Help they are on my house
In the Insect Order Ephemeroptera by KGotz
4Jun 27, 2008
by Ffhd1clt
Re: Hellgrammite hell
In the Hellgrammite Genus Corydalus by Sprattoo
1Jun 5, 2007
by Wiflyfisher
Re: North Carolina Hellgrammites
In the Insect Family Corydalidae by Gandoff
1Mar 10, 2007
by Troutnut
Re: Best Site on the Web!!!!!!!!!!!!!!!
In General Discussion by Troutbum21
3Aug 24, 2006
by Softhackle
Re: Ephemeroptera
In General Discussion by PghFly
12May 3, 2013
by Entoman
Re: First post: Mayfly to identify please
(2 more)

In the Identify This! Board by Pilonm
5Oct 17, 2007
by Pilonm
Re: Help identifying?
In the Identify This! Board by Doublezz105
3Jul 9, 2007
by Taxon
Re: What are we seeing in the East?
In General Discussion by Adirman
6Apr 8, 2013
by Brookyman
Re: Need help ID Nemoura nymph
In the Identify This! Board by Cherylkorca
2Feb 24, 2020
by Leskorcala
Re: trying to figure out
In the Insect Family Corydalidae by Buggy
1Apr 19, 2009