Good to hear from you again!

It's probably one of the many members of the 'blues' family of butterflies, which are closely related to hairstreaks. Some of the 'blues' have tails like the hairstreaks, but not all. They're a hard group to ID even here, and I certainly don't know for sure which yours is, assuming it's a blue. There's also the spring/summer 'blue' complex, which is in a different group - these probably exist in the Caribbean, too.

Sherry

Larry here, it has been fun identifying many of your posted butterflies over the years, siam. Trinidad and Tobogo, as I recall.

Unfortunately, my Butterfly World book shows mostly uppersides of Blues.

A Google of lycaenidae+trinidad+tobago is productive, leading to:

https://en.wikipedia.org/wiki/List_of_butterflies_of_Trinidad_and_Tobago

and from that,

https://en.wikipedia.org/wiki/Strymon_bubastus ,

the Disjunct Scrub-Hairstreak that appears very similar to your picture.

Note that there is often variability in most blue and hairstreak species, especially any orange areas.

I will edit this post if I find better ID candidate.

Edit:

another Strymon example:

http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/lycaenidae/theclinae/strymon/sp-1.jpg

click on the small image for a larger. It helps if you can rotate, or mirror your image in a computer program, it makes comparing the spots and pattern easier.

Hi Larry, and Miss Sherry, thanks much. how have you all been? yep its trinidad and tobago!! :p ive moved to a new house and starting a garden again... its coming... mostly got monarchs, gulf fritilaries, white peacocks, gold rimmed swallowtails, and tropical checkered spots for now.

whats new with you all? im glad you are still here :D