Quiz 4: Plecoptera (Stoneflies) Flashcards
General Larval Characteristics
- 2 cerci on abdomen
- 2 tarsal claws
- Gills on the thorax or cervical region, small and finger-like (or absent)
- Mandibulate mouthparts
- Wing pads
What is the functional feeding group (FFG) of the Group Euholognatha?
Mostly shredders, a few grazers
What is the FFG of Group Systellognatha?
Some shredders, some predators
How do you know what FFG an insect is in by looking at its mouthparts?
Look at the labium:
In shredders/grazers, the paraglossa & glossa are the same length.
In predators, the paraglossa are larger than the glossa.
What is the scientific name for the winter stoneflies?
Group Euholognatha
-small & narrow in size
What are the key characteristics of Nemouridae?
WS
- Cervical, bushy gills
- Long hind legs
- *Small 2nd tarsal segment
- “hairy”
What is the common name of Nemouridae?
WS
Brown Stoneflies
What are the key characteristics of Capniidae?
WS
- Groove along the side of the abdomen (“plural fold”)
- “Anal lobe” (indentation) of the hind wing pads
What is the common name of Capniidae?
WS
Small Winter Stoneflies
What are the key characteristics of Leuctridae?
WS
- Pale yellow (no pattern)
- *Distinctive narrow & parallel wing pads
What is the common name of Leuctridae?
WS
Rolled-Wing Stoneflies
What are the key characteristics of Taeniopterygidae?
WS
- Tarsal segments 1 & 2 of equal size
- Very divergent wing pads
- Characteristic “racing stripe” down the length of the body
What is the common name of Taeniopterygidae?
WS
Spring Stoneflies
What are the key characteristics of Peltoperlidae?
Roach-like with overlapping notal shields
What is the common name of Peltoperlidae?
Roachflies
