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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Running Crab Spiders (Philodromidae)
Photo#386413
Philodromus rufus? - male
Copyright © 2010 Lisa

Philodromus rufus? - Male
Worcester County, Massachusetts, USA
April 17, 2010
Size: dime sized
Is this a Philodromus rufus? We had a Philodromus rufus last year but its abdomen was MUCH larger than its prosoma. On this one the abdomen is smaller. Does that mean this is a male and the other one was probably a female? Or does the abdomen grow over time and maybe this is a youngster? Also, if this is indeed another Philodromus rufus, is there any way to tell which kind? Are there multiple of them in Massachusetts? Many thanks!

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Philodromus rufus? - male Philodromus rufus? Philodromus rufus?
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Contributed by Lisa on 18 April, 2010 - 4:20pm
Last updated 19 April, 2010 - 11:36am

Moved
Moved from ID Request. Male because of swollen pedipalps ("boxing gloves" on end of leg-like structures at front of spider) and not as much because of shape or size of abdomen.
… Ken Schneider, 19 April, 2010 - 11:33am login or register to post comments

It is a male
I don't know about rufus.
… Lynette Elliott, 18 April, 2010 - 11:22pm login or register to post comments

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