Bristletails are rarely found in Dominican amber. The order Thysanura, is characterized by three long tails and long slender antennae. The body is shrimp-like. Thysanura, in particular, may be the direct ancestor of winged insects. There are also 3 or 4 fungus gnats, Diptera, Mycetophilidae. This is a good piece.
Interesting piece. This has a large long legged fly, Diptera, Dolichopodidae (?), an unknown beetle (not sure about this one), two fungus gnats, Diptera, Mycetophilidae and a moth fly. It has some other stuff also. A lot of the animals were caught at the 'interface' of two layers of resin - easily seen in the photo.
Lots of air bubbles, sometimes clouding the visibility. But among the air bubbles are a number of moving air bubbles. That water has been in the amber of 20 million years - just think about that - especially if there is an ancient virus that could wipe out life on earth. (Probably not, but an interesting thought.....) The piece is nice sized and has a barklice, Psocoptera. Also a worker ant and part of a leaf.
Ya' gotta love this one. There is a complete cricket. The long antennae are both present and all the body parts. In fact you can discern the body markings. Quite an impressive fellow. Not far from him is the largest springtail I have ever seen (they are normally VERY small). Thrown in a couple wasps and this is quite the piece. Finally there is a fungus gnat, Diptera, Mycetophilidae.
There are 2 platypodid beetles, Coleoptera, Playtypodidae - but that is not the special thing here. There are 2 plant parts, probably plant flower related. The strange is one of the parts. It looks like there are seeds (I do not believe they are seeds) - maybe something like stamens all in a row. I just do not know, but do recognize it as unique.
If you recognize the wings, then you know that this is a mayfly Emphemeridae. This is a male since the cerci are so long. This specimen with all three cerci intact is very rare. Mayflies are characterized by protruding eyes. Hind wings are small and rounded or very reduced. Mayfly adults enjoy a life span of no more than two days. On the transition from nymph to adult stage, they fly from the surface of the water for mating, but do not feed. They complete their mating process and die after one or two days. This specimen is perfect.
Good sized chunk of amber. The insects inside are not huge, but they are distinct. There is an immature cicada, Homoptera, family Cixiidae. Also small wasps, and a washed out looking worker ant. There is even what looks like a small part of a moss. Finally, there is a beautiful looking fly.
If that picture does not catch your eye, nothing will. This is a square headed ant, Hymenoptera, Myrmicinae: Zacryptocerus. This is a worker ant who blocks the nest entrance with their square heads. Like a strong"gate" they plug the entrance. Only when the right password (signal or recognition scent) will allow entry.