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Night walk along the Rio Cacao

5/28/2018

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The weather on day 1 was just so excellent that after dark I couldn't resist taking a short walk down along the Rio Cacao.

​These are known as Heliconia bugs, and are, not surprisingly, true bugs that live and feed almost exclusively on the plant Heliconia.  I see them every year in one patch along the river and they were there again this year.  Attractive bugs that are territorial on the plant and males will defend their turf.  If another bug approaches things can quickly escalate into a weird reverse wrestling match.  The two bugs turn around and grapple backwards using their strong rear legs.  Not sure how the winner is determined but something about who can jam their legs spines into the other one's belly the hardest and make them give up.
Picture
Female Heliconia bug (Leptoscelis tricolor) from the FCRE
Picture
Male heliconia bugs. You can tell the males from the females because males have very beefy hind legs for wrestling.
Tink frogs, so named because they make a very loud "tink" sound, are super common.  But we have a number of species of them that require handling the animal to ID them so I will just show a photo of one without guessing at which one it is.
Picture
One of dozens of tink frogs along the Rio Cacao
Harvestman aren't really true spiders, but have those creepy 8 legs and sure act like spiders.  A tiny body and very long legs give these the common name "daddy long legs."
Picture
Harvestman on a Piper leaf
Okay, so let's get real creepy to finish this up.  Another non-spider in the 8-legged category is the tail-less whip scorpion (Amblypygidae family).  Latin factoid:  amblypygid means "blunt butt" hence the "tail-less" part of the name.

​There are two genera of these here, Phrynus and Paraphrynus, but you have to put the front spiny part (the pedipalp) under a microscope just to see a little obscure almost spine in order to figure out which genus it is.  So no ID other than family on this character.

​The body is about two inches long, so not a particularly huge one but decent sized.  However the legs are very long and this animal would easily be 10 inches from leg tip to leg tip.
Picture
Amblypygid on a tree trunk at the FCRE along the Rio Cacao
But these are WAY creepier looking that I can show in a full animal image, so here is a close up of the head area.  Those spines are used for spearing insect prey, and although it looks nasty is essentially harmless to humans.
Picture
An adult tail-less whip scorpion (Amblypygidae) along the Rio Cacao
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