TABLE 4
BENTHIC MACROVERTEBRATE RESULTS
WEST BRANCH PERKIOMEN CREEK, BERKS CO.
June 10, 1999

TAXA

STATION

1WBP

2WBP

4WBP

R1

Ephemeroptera (mayflies)

Baetidae; Acentrella

C

P

P

 Baetis

A

A

A

P

 Centroptilum

P

Ephemerellidae; Drunella

A

A

A

A

 Ephemerella

A

P

C

 Serratella

C

P

C

P

Heptageniidae; Epeorus

R

C

C

C

 Leucrocuta

R

R

 Stenacron

C

 Stenonema

P

C

P

P

Leptophlebiidae; Habrophlebiodes

R

 Paraleptophlebia

C

A

P

Oligoneuriidae; Isonychia

C

P

P

P

Plecoptera (stoneflies)

Leuctridae; Leuctra

C

C

A

P

Nemouridae; Amphinemura

C

Peltoperlidae; Pelto/Tallaperla

R

Perlidae; Acroneuria

R

C

C

 Eccoptera

P

 Paragnetina

R

 Perlesta

P

C

P

A

Perlodidae; Isoperla

C

P

P

Pteronarcyidae; Pteronarcys

P

Tricoptera (caddisflies)

Brachycentridae; Micrasema

A

P

 Glossosomatidae; Agapetus

P

R

 Glossosoma

P

C

P

Hydropsychidae; Cheumatopsyche

P

 Diplectrona

R

C

R

P

 Hydropsyche

A

A

C

P

Lepidostomatidae; Lepidostoma

R

Limnephilidae; Apatania

R

 Frenesia

R

 Goera

R

 Pycnopsyche

P

Philopotamidae; Dolophilodes

C

C

C

A

Polycentropodidae; Polycentropus

R

R

R

Rhyacophilidae; Rhyacophila

P

R

P

C

Uenoidae; Neophylax

R

Diptera (true flies)

Ephydridae

R

Simuliidae; Simulium

P

R

P

Tipulidae; Antocha

P

P

P

 Dicranota

C

P

 Hexatoma

P

P

 Tipula

P

R

R

Chironomidae

C

C

A

A

Megaloptera

Corydalidae; Nigronia

P

R

Sialidae; Sialis

P

Odonata (dragon-, damselflies)

Gomphidae; Stylogomphus

P

R

P

Coleoptera (aquatic beetles)

Dryopidae; Helichus

R

Elmidae; Dubiraphia

R

 Macronychus

R

 Optioservus

A

C

A

P

 Oulimnius

A

P

P

C

 Promoresia

A

C

 Stenelmis

C

A

P

Psephenidae; Ectopria

R

 Psephenus

P

A

A

C

Ptilodactylidae; Anchytarsus

P

Helophoridae; Helophorus

P

Non-Insect Taxa

Oligochaeta

P

R

Decapoda (crayfish)

Cambaridae

R

 Cambarus

R

P

R

Gastropoda (univalves, snails)

Physidae

R

Number of taxa in total sample

44

32

32

36

R=rare (<3 organisms); P=present (3-9 oganisms); C=common (10-24 organisms);

A=abundant (25-99 organisms); VA=very abundant (>99 organisms)