Water Quality ID

[cngu23]

Name, class, indicator importance, and distinguishing features between a very similar organism on the list.

gilled snail, class 1, show water with high oxygen concentration
distinguished between air breathing snail by the position of the opening. Gilled snails have a right opening while air breathing ones have a left sided opening.

[gigaboo]

gilled snail, class 1, show water with high oxygen concentration
distinguished between air breathing snail by the position of the opening. Gilled snails have a right opening while air breathing ones have a left sided opening.

Yup. Gilled snails also have operculums, I believe.

[Fossil Freak 25]

Also, Gilled snails, operculum is on the right side whereas the air breathing is on the left

[Fossil Freak 25]

http://www.google.com/imgres?um=1&hl=en ... 29,r:1,s:0
What is this maco? What is its class?

[tornado guy]

http://www.google.com/imgres?um=1&hl=en ... 29,r:1,s:0
What is this maco? What is its class?

Fossil, the person who gets it right posts the next pic...

[cngu23]

http://www.google.com/imgres?um=1&hl=en ... 29,r:1,s:0
What is this maco? What is its class?

Fossil, the person who gets it right posts the next pic...

I'll post after this one or something

Dobsonfly larvae, class 1

[gigaboo]

cngu23, I think you should just post a new one. I agree with you, that it's a dobsonfly.

[cngu23]

Name, Class, Distinguishing features

[PacificGoldenPlover]

Not sure... (Click to Show Hidden Text)

Horsefly, class four, large compound eye, presence of haltere.

[cngu23]

Not sure... (Click to Show Hidden Text)

Horsefly, class four, large compound eye, presence of haltere.

correct