I just want to share you some website to indentification water insects

http://www.freshwater-science.org/nabslinks/aquatic-insects.aspx

http://www.waterbugkey.vcsu.edu/

Hope can help you.

Dear Miza. I suggest you contact Paulo A. V. Borges here in RG. I am sure he'll be of help and/or indicate someone else to you.

Good luck and best regards,

JP

hello Miza, a, b, and g would be springtails (Collembola), cheers,David

I agree, a,b &g look like collembola. In addition, it may be that e is not an insect but a crustacean a burrowing gnathiidae or something similar. They look very insect-like.

Hi,

c, h and i are most likely Isopods (Isopoda)

h and i probably belong to the family Munnidae (Munna spp.) or Paramunnidae.

Perhaps this website could be useful: http://species-identification.org/species.php?species_group=crustacea&set=42&menuentry=index&selected=afbeeldingen

Regards

I think c could be a Coleoptera larva

surely the first two (a and b) are Collembola (Apterigota), (d) is probably an Ortoptera (juveile), and the last one is a Rhyncota (juvenile). According to my opinion they are insects brought by the wind on the sea surface film. A better quality of other images will allow a better identification.

Regards,

Is h a tardigrad? e looks like a crab larva to me. i agree with Genuario, difficult to tell on these low-resolution images.

f seems like a Thysanoptera to me, c an immature Zygentoma, d an immature Orthoptera, g and i are probably heteroptera.

I just want to add, that there ar hardly any truly marine insects. I know of only Telmatogeton larvae and some Gerridae to be totally marine, although the latter only lives on its surfaces. There are some aquatic Diptera larvae (e.g. Dolichopodidae, Canacidae) living in saline waters and there are a few Collembola, Petrobius, and some Heteroptera (like Saldula, Aepophilus) that can be found on the seashore, but are not truly aquatic.

To my knowledge there are no marine insects, or if there are they are very rare.

Are you sure that these specimens are insects? I can't see the pictures well but a diagnostic way to decide if an organism is an insect could be the number of legs. Insects (esapoda) have only 6 legs.

If the specimens are insects, are you sure they come from marine environment and not, for example, from a coastal pool?

I agree with Lorenzo Bramanti, this organisms can presents other origins on marine ecosystems e.g. from river estuary. Figure C is likely dragonfly juvenile

There are staphylinid beetles living in the eu- or supralittoral, like Micralymma marinum, or some Bledius species. Ok, these might not be truly marine.

But some Chathamiidae (Trichoptera) lay their eggs in starfish, and Hermatobatidae (Heteroptera) are coral treaders. Some Gerridae also also found in the pelagic:

see here: http://blog.insectmuseum.org/?p=4310

So there are marine insects!

To the pictures:

a) and b) Collembola

c) definitely an insect

d) Orthoptera larvae

e) might well be a small spider as these are drifted far onto the oceans

f) Thysanoptera

g) and h) definitely insects, but hard to say which ones in this resolution

i) Heteroptera

Do you have these in better resolution (c,e,g,h)?

Best regards

Armin

I think Armin did a wonderful job.  G might also be Collembola.  Springtails are common in the intertidal.

Yes, I agree a and b are collembola. The image is not clear enough for me to be sure, but I suspect that e is a member of the Gnathiidae, borrowing semi-colonial crustaceans that look much like insects.

I think Peter is right. I suspected a spider in my first guess, but it really looks very much like a Gnathiidae.

www.vliz.be/imisdocs/publications/224066.pdf

Dear Prince Samuel,

Your specimens might be:

a, b, c, d, e, f & g : Collembola

h: Springtail (Collembola)

i: Heteroptera

Best regards,

Hakima