TABLE 4

BENTHIC MACROVERTEBRATE RESULTS

OYSTERVILLE CREEK, BERKS CO.

June 10, 1999

1OC

5OC

R1

Ephemeroptera (mayflies)

Baetidae; Acentrella

C

P

 Baetis

A

A

P

Ephemerellidae; Drunella

VA

A

A

 Ephemerella

C

C

C

 Serratella

A

A

P

Heptageniidae; Epeorus

A

C

C

 Leucrocuta

R

 Stenonema

C

R

P

Leptophlebiidae; Paraleptophlebia

P

Oligoneuriidae; Isonychia

P

C

P

Plecoptera (stoneflies)

Leuctridae; Leuctra

P

P

Nemouridae; Amphinemura

R

Peltoperlidae; Pelto/Tallaperla

R

Perlidae; Acroneuria

P

P

 Paragnetina

R

 Perlesta

C

C

A

Perlodidae; Isoperla

P

P

Pteronarcyidae; Pteronarcys

P

P

Tricoptera (caddisflies)

Glossosomatidae; Agapetus

C

R

 Glossosoma

C

R

P

Hydropsychidae; Cheumatopsyche

C

P

 Diplectrona

P

 Hydropsyche

A

A

P

 Macrostemum

R

Hydroptilidae; Leucotrichia

P

Limnephilidae; Goera

R

Philopotamidae; Chimarra

P

 Dolophilodes

A

C

A

Polycentropodidae; Polycentropus

R

R

Rhyacophilidae; Rhyacophila

A

R

C

Diptera (true flies)

Tipulidae; Antocha

P

P

P

 Dicranota

R

P

 Tipula

R

R

Chironomidae

A

C

A

Megaloptera

Corydalidae; Nigronia

P

R

 Corydalus

R

Sialidae; Sialis

R

Odonata (dragon-, damselflies)

Cordulegastridae; Cordulegaster

R

Gomphidae; Lanthus

R

 Ophiogomphus

C

 Stylogomphus

P

P

Coleoptera (aquatic beetles)

Dryopidae; Helichus

P

R

Elmidae; Optioservus

A

A

P

 Oulimnius

R

C

 Stenelmis

P

A

P

Psephenidae; Psephenus

A

C

C

Ptilodactylidae; Anchytarsus

R

Helophoridae; Helophorus

R

Non-Insect Taxa

Turbellaria (flat-worms)

 Cura

R

Oligochaeta

R

Lumbricidae

P

Decapoda (crayfish)

Cambaridae

R

 Cambarus

R

Gastropoda (univalves, snails)

Physidae

R

Number of taxa in total sample

36

30

36