#Arachtober 16: as it's grass spider season, a quick guide to telling wolf spiders and grass spiders apart. They are often confused with each other due to similar colours and patterns, which is not a good way to distinguish spiders!
Grass spiders are usually found in funnel webs, have long spinnerets visible, and have 1 pair of small eyes on the top of their head.
Wolf spiders don't make webs*, have no visible spinnerets, and have 2 pairs of eyes on the top of their head. 🐦
Grass and wolf spiders have distinctly different eye arrangements. This is what they look like from the front. Grass spiders have 8 small eyes clustered at the front of their head. Wolf spiders have 2 big "hi-beams", 4 "fog lights" beneath, & 2 "taillights". 🐦
This befits their respective lifestyles. Grass spiders are poorly sighted, sensing the world mostly through vibration. Wolf spiders are highly visual hunters, often active at night as well as during the day.
Both are harmless to humans & can be relocated with glass & card!
Fine print: "grass spider" = genus Agelenopsis, part of funnel weaver family Agelenidae, no relation to "Sydney funnel webs" (Atracidae). "Wolf spider" = family Lycosidae. Mostly applicable to eastern North America. Thank you for your attention. /fin
P.S. Maybe in the future: how to distinguish wolf and fishing spiders. Spoiler: it's eye arrangement.
Do all spiders have 8 eyes?
@ashwinvis No! Many have 6. A few have 4 or even 2, and there are some freaky weirdos that have ODD NUMBERS of eyes. There are even spiders that live in dark caves and have lost their eyes entirely.
🍹🌴 a smol island in the sun 🌴🍹