Currently viewing the category: "Flatties"

Subject:  What type of spider?
Geographic location of the bug:  South Florida
Date: 04/16/2021
Time: 10:43 AM EDT
Your letter to the bugman:  What type of spider is this in my bathroom?
How you want your letter signed:  Jakob

Flattie

Dear Jakob,
This is a nocturnal hunting spider (does not build a web for snaring prey) in the genus
Selenops, commonly called a Flattie, and here is a BugGuide image that looks very similar.  According to BugGuide:  “This genus is found throughout the tropics and subtropics worldwide and can be found in southern parts of the U.S. ”  This shy group of Spiders is not a threat to humans.

Flattie

Subject:  Id spider please
Geographic location of the bug:  Panama, western highlands 5400 ft
Date: 02/10/2020
Time: 11:26 AM EDT
Your letter to the bugman:  Hi – help id this spider who was staying still on the floor of my house in western panama highlands. About 2+ inches as in pic
How you want your letter signed:  Nancy S

Flattie, NOT Giant Crab Spider

Dear Nancy,
This is a harmless Giant Crab Spider in the family Sparassidae.  Here is an image from Flickr of a Giant Crab Spider from Panama.  We are uncertain of your species.  Giant Crab Spiders are nocturnal and they do not spin a web to snare prey.  They hunt.

Correction Courtesy of Cesar Crash: 
I think it’s a flattie, Selenops sp.

Ed. Note:  See images of a Flattie from Costa Rica on Quaoar Power Zoo.

Subject:  I see these everywhere
Geographic location of the bug:  Southern Florida
Date: 05/07/2019
Your letter to the bugman:  I keep seeing these all over near my house and outside. Can’t identify it. Please help
How you want your letter signed:  Cory

Flattie

Dear Cory,
Spiders in the genus
Selenops are frequently called Flatties, and here is a BugGuide image for comparison.

Subject:  Found this beauty in my hotel room!
Geographic location of the bug:  Phoenix
Date: 01/14/2019
Time: 07:35 PM EDT
Your letter to the bugman:  I was laying on my bed in my hotel room looking at the ceiling and suddenly realized I was staring at a pretty good sized spider. I called maintenance for a ladder and the guy showed up with a stick and a wad of duct tape inside out on the end of it. I said I wanted it captured alive so we could release it and he promptly handed me the ladder and a trash can. After some coaxing I managed to get it in the can and released it across the street. It’s January in Phoenix, cool weather (65 by day, 40s by night, but since it was inside that might not matter as much). As you can see it has stripes, and it was almost perfectly flat against the ceiling. My guess is fishing spider but wondering what you think. Thanks for your help in advance!
How you want your letter signed:  Erich Walsh

Flattie

Dear Erich,
We have not awarded the Bug Humanitarian Award in some time, but discovering this Spider in a hotel room, calling maintenance and then capturing and releasing the Spider across the street certainly qualifies you as a bug humanitarian.  Your description that “it was almost perfectly flat against the ceiling” is acknowledged by the common name Flattie for Spiders in the family Selenopodidae, genus
Selenops, which can be viewed on BugGuide.  According to BugGuide: “This genus is found throughout the tropics and subtropics worldwide and can be found in southern parts of the U.S. In Sarah Crews’ 2011 paper, it is noted that there are quite a few unsorted specimens from all over the southwest (so it is best not to take the following ranges as concrete).”  Confusing this Flattie for a Fishing Spider is understandable.

Daniel,
Thank you so much for the identification and the bug humanitarian award! That’s good fun and feels great. You deserve an award more than I do though for being a public advocate for nature and helping people be a part of that.
All the best!
Erich

Subject: Is this flattie(?) really Selenops?
Location: Down Rio Chucunaque from Yaviza, Darien, Panama
April 14, 2017 6:33 am
I found this flat spider “squashed” against a small tree trunk in the Darien Gap in Panama. It seems to be the same as or related to the ones in the news a couple years ago that can glide from a treetop back to the trunk, which those articles called Selenops. The spider was 3-4 cm long with legs, and when I finally disturbed it, it scampered nimbly around the tree.
This was in dense forest
Signature: Peter H

Flattie

Dear Peter,
Selenops is a genus in the family Selenopidae, commonly called Flatties, that is also found in North America and is represented on BugGuide where it states:  “Selenops is from Greek selene (σεληνη)- ‘moon’ + ops (ωψ)- ‘eye, face’. Latreille translated it into French as ‘yeux en croissant’ which means ‘eyes in a crescent'” and though there is no diagram on BugGuide, the eyes on your individual do appear in a crescent form.  Additionally the morphology of your individual is very similar to the images posted to BugGuide.  The pedipalps on your individual lead us to believe it is a male Flattie.  Its camouflage is quite remarkable and we can’t believe you actually spotted it in a “dense forest.”  Flatties are hunting spiders that do not build webs.

Flattie

Flattie

flattie!
Location: key largo, fl
December 4, 2011 8:51 pm
Hey guys! Here’s a cool flattie spider hanging out on my bathroom wall. I live in key largo and I was wondering if I could get more specific species info from you 🙂
Signature: wheezy

Flattie

Dear wheezy,
Thanks so much for sending us your photo.  From what we have been able to glean from BugGuide, Flatties are in the family Selenopidae, and new world species seem to all be classified in the genus
Selenops.  According to BugGuide, there are:  “7 species in BugGuide’s range (North America north of Mexico), but many species in Central America that can be possible imports.”  We are unable to provide you with an accurate species identification at the moment.