Updates from May 13, 2007
An 18-inch Catskill brown trout.
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
This is a common sight on the large Catskill rivers in early May, a mother goose guarding her nest. They like to nest on midstream islands where anglers are prone to walk from one fishing spot to another, and they do not back down. This one was hissing at me and I didn't want to get any closer.
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Here's the head of a sea lamprey which migrated up the Delaware River to spawn.
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
These are red-spotted newts, Notophthalmus viridescens viridescens. Thanks Gonzo for the ID.
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Here's the body of a sea lamprey which migrated up the Delaware River to spawn.
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
Hydropsyche (Spotted Sedges) Caddisfly Pupa
View 8 PicturesSeveral users have interesting comments in the discussion of this specimen, but this observation by Creno is especially good:
Also, this is what I would call an "immature" pupa. The wingpads of caddis pupae darken to nearly black as the enclosed adults near emerging. The darkening is the developing adult wing inside the pupal wing pad (
The wing pads on this final instar
Baetidae mayfly nymph are extremely dark.
Wing pad: A protrusion from the thorax of an insect nymph which holds the developing wings. Black wing pads usually indicate that the nymph is nearly ready to emerge into an adult.). The ultimate coloration of the adult wing is not very apparent in most pupal wing pads (
The wing pads on this final instar
Baetidae mayfly nymph are extremely dark.
Wing pad: A protrusion from the thorax of an insect nymph which holds the developing wings. Black wing pads usually indicate that the nymph is nearly ready to emerge into an adult.) as the majority of the adult wing coloration comes from the color/position of the adult wing hairs and setae (Seta: Little hairs on insects.). But dark pupal wingpads are a good indication that the emergence will occur very soon, likely that day or so, and that the adult parts are sufficiently developed within the pupae to make a species determination from the specimen, particularly if it is a male.
Siphlonurus quebecensis (Gray Drake) Mayfly Nymph
View 5 PicturesI photographed this nymph in the middle of molting between one instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) and the next (not hatching).
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