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| Helgramites are commonly found on the Guadalupe. |
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Southwest Texas State University Study According
to an April, 1998 study done by Southwest Texas State University on the Guadalupe River below Canyon Dam: - Scuds+Midges+Mayflies+Caddis flies = 91% of drift.
- Mayflies and Midges are most common in the
evening drift.
- Caddis fly pupae and larvae are most common in mid-afternoon drift Scuds are most common in the early
drift, but are available throughout the day.
- Blue Wing Olives (#18) and Tricos (#24) are the most common Mayflies.
- The Speckled and Spotted Sedge (#12 - #16) are the most common Caddis.
- Midges (#18 - #24) are the most common
insect in the drift.
300 Baker Avenue Concord, MA 01742
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| There is a high population of Damsel Nymphs on the Guadalupe. |
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