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Recent Additions
The following images have been recently added to the Macros Catalog |
Instructions: For a larger view of the specimens below, click on an image. The enlarged image will appear on your screen in a new window. Close this new window when you are through viewing it. Further information on the identification and ecology of aquatic macroinvertebrates can be found from the materials mentioned on the Macro Resources page.
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Date Posted: May 2013
Date: April 2013 |
| Salmon Creek, Clark Co., WA |
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Date Posted: Oct 2012
Date: October 2012 |
| Clark Co., WA - sample from East Fork Lewis River at Lewisville Park |
golden stonefly, spiny crawler
& flathead mayflies, netspinner
& lepidostomatid caddisflies,
riffle beetles
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Date Posted: June 2010
Date: Spring 2010 |
| Clark Co., WA |
giant water bug
6 cm
Family: Belostomatidae
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giant water bug
6 cm
feeds on prey, like tadpoles
Family: Belostomatidae
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giant water bug
6 cm
piercing mouthpart
Family: Belostomatidae
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Todd Road pond
Cowlitz Co., WA |
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copepod
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scud
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aquatic sowbug
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aquatic sowbug |
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aquatic beetle
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predaceous diving bettle larva
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predaceous diving bettle larva
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predaceous diving bettle larva
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cranefly larva
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cranefly larva & duck weed
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duck weed |
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Date Posted: December 2009
Clark Co. pond
Date: Fall 2009
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phantom midge larva
(in a plastic spoon)
Chaoborus sp.
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phantom midge larva
(side view)
Chaoborus sp.
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phantom midge larva
(top view)
Chaoborus sp.
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Date Posted: November 2009
Site: Mosquito Cr. & Brock Cr. west of Longview, WA (Cowlitz Co.)
Date: Nov. 11, 2009 |
Mosquito Cr.
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snail? eggs under rocks
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snail? eggs under rocks
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lepidostomatid casemaker caddisfly (in case)
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lepidostomatid casemaker caddisfly (without case)
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saddle casemaker caddisfly (without case)
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Date Posted: October 2009
Site: Clark Co., WA
Date: Sep/Oct 2009 |
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ribbon worm
East Fork Lewis River
Lewisville Park
Clark Co., WA
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ribbon worm
East Fork Lewis River
Lewisville Park
Clark Co., WA |
ribbon worm
East Fork Lewis River
Lewisville Park
Clark Co., WA
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Date Posted: October 2009
Site: Columbia River - Willow Grove Park (Cowlitz, Co.)
Date: July 2009 |
3 spine stickleback
Willow Grove Park
Cowlitz Co.
Columbia River
July 2009
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3 spine stickleback
Willow Grove Park
Cowlitz Co.
Columbia River
July 2009 |
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Date Posted: October 2009
Site: Fishhawk Falls Park (Clatsop, Co., OR)
Date: July 2009 |
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Date Posted: October 2009
Site: McCord Cr, Yeon State Park, OR
Date: July 2009 |
spiny crawler mayfly
McCord Cr
Columbia River Gorge, OR
July 2009
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frog
McCord Cr
Columbia River Gorge, OR
July 2009 |
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Date Posted: July/Nov. 2009
Site: Clark Co., WA
Date: Fall 2008 - Spring 2009 |
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giant stonefly
East Fork Lewis River
Lewisville Park
Clark Co., WA
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free-living caddisflya
East Fork Lewis River
Lewisville Park
Clark Co., WA
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free-living caddisfly
East Fork Lewis River
Lewisville Park
Clark Co., WA |
crayfish & mayfly
East Fork Lewis River
Lewisville Park
Clark Co., WA
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Date Posted: August 2008
Site: San Juan Island
Date: July 2008 |
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water scorpion
from lake on San Juan Is. |
damselfly
from stream on San Juan Is. |
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Date Posted: April 29, 2008
Site: East Fork Lewis River - Lewisville County Park (Clark, Co.)
Date: April 2008 |
flathead mayfly
Lewisville Park
Clark Co.
East Fork Lewis River
April 2008
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flathead mayfly
Lewisville Park
Clark Co.
East Fork Lewis River
April 2008 |
black fly pupa
Lewisville Park
Clark Co.
East Fork Lewis River
April 2008
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Date Posted: November 15, 2007
Site: Columbia River - Willow Grove Park (Cowlitz, Co.)
Date: July 2007 |
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IMG_3321.jpg
Willow Grove Park
Cowlitz Co.
Columbia River
July 2007
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| Date Posted: November 11, 2006
Site: Harmony Dr. (Longview, WA)
Date: July 2006
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harmony-IMG_0280.jpg
stream collection site
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harmony-264.jpg
riffle beetle adult
genus: Zaitzevia
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harmony-IMG_0412.jpg
riffle beetle larva
genus: Lara
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harmony-222.jpg
riffle beetle larva
genus: Lara |
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harmony-236.jpg
small minnow mayfly
genus: Baetis*
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harmony-082.jpg
small minnow mayfly
genus: Baetis*
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harmony-006.jpg
flatheaded mayfly
genus: Nixe*
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harmony-005.jpg
flatheaded mayfly - gills
genus: Nixe* |
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harmony-044.jpg
flatheaded mayfly
genus: Ironodes*
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harmony-251.jpg
flatheaded mayfly
genus: Ironodes*
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harmony-079.jpg
flatheaded mayfly
genus: Epeorus*
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harmony-103.jpg
spiny crawler mayfly
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harmony-039.jpg
golden stonefly
Hesperperla pacifica
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harmony-051.jpg
head & thoracic gills
Hesperperla pacifica
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harmony-053.jpg
abdomen & gills
Hesperperla pacifica |
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harmony-043.jpg
golden stonefly
Calineuria californica
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harmony-048.jpg
head & thoracic gills
Calineuria californica
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harmony-194.jpg
little green stonefly
genus: Sweltsa
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harmony-198.jpg
little green stonefly
( head & thorax)
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harmony-058.jpg
little yellow stonefly
genus: Isoperla
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harmony-188.jpg
little yellow stonefly
genus: Isoperla
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harmony-061.jpg
little yellow stonefly
(head & thorax with wingpads)
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harmony-297.jpg
little brown stonefly
genus: Zapada*
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harmony-144.jpg
saddle-case-maker caddisfly
(underside of case)
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harmony-128.jpg
saddle-case-maker caddisfly
(outside of case)
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harmony-139.jpg
caddisfly case
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harmony-140.jpg
caddisfly pupa |
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harmony-027.jpg
humpless case-maker caddisfly
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harmony-150.jpg
lepidostomatid caddisfly
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harmony-024.jpg
lepidostomatid caddisfly case
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harmony-032.jpg
lepidostomatid caddisfly cases |
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harmony-166.jpg
free-living caddisfly
Rhyacophila
Brunnea-Vemna group*
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harmony-171.jpg
free-living caddisfly
Rhyacophila
Brunnea-Vemna group*
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harmony-169.jpg
free-living caddisfly
Rhyacophila
Brunnea-Vemna group*
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harmony-172.jpg
free-living caddisfly
Rhyacophila
Brunnea-Vemna group*
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harmony-184.jpg
free-living caddisfly
Rhyacophila Betteni Group*
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harmony-182.jpg
free-living caddisfly
Rhyacophila Betteni Group*
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harmony-178.jpg
free-living caddisfly
Rhyacophila Betteni Group*
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harmony-323.jpg
finger-net caddislfy
genus: Wormaldia* |
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harmony-290.jpg
midge larva
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harmony-292.jpg
midge pupa |
harmony-271.jpg
blackfly larva
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harmony-282.jpg
blackfly larva
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harmony-132.jpg
cranefly larva
genus: Dicranota
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harmony-138.jpg
cranefly larva
genus: Dicranota |
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harmony-142.jpg
flatworm
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harmony-IMG_0510.jpg
aquatic snail
genus: Juga
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harmony-120.jpg
terrestrial/semi-aquatic?
isopod (sowbug)
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Date Posted: November 4, 2006
Site: Grays River
Date: August 2006 |
grays_aug06-1105.jpg
little green stonefly
genus: Sweltsa*
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grays_aug06-1125.jpg
free-living caddisfly
genus: Sweltsa* |
grays_aug06-1117.jpg
flatheaded mayfly
genus: Epeorus*
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grays_aug06-1108.jpg
free-living caddisfly
Rhyacophila malkini
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grays_aug06-1098.jpg
free-living caddisfly
Rhyacophila malkini |
grays_aug06-1077.jpg
midge larva
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Date Posted: November 4, 2006
Site: Daybreak Park, East Fork of the Lewis River
Date: August 2006 |
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red-leg1.jpg
red-legged frog
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red-leg2.jpg
red-legged frog |
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| Note from author: Considerable effort has been made to be as accurate as possible in the identification of the organisms. While I am fairly confident of the ID (at least for the major taxon levels), I cannot guarantee complete accuracy. In particular, you will notice that some organisms are labeled with a (*). This indicates a probable classification based on general traits (shape, size and color) of the organism and location from which it was found. I do not possess the level of expertise nor did I conduct the kind of detailed inspection to provide a conclusive ID -- consider these efforts at classification as my "best guess" based on available information and, in some instance, outside assistance. (If you notice any errors or omissions, please contact me at the email address provided at the bottom of this page.) |
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Back to: Aquatic Macros Index
modified: June 2010
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