This little guy is my officemate. I call him Jumping Spider. Every morning he makes his way across the wall above my desk. He usually pauses around my monitor and I give him a cheery “good morning” then he’s on his way again. I’m not sure what variety of spider he is, but he’s fairly small and not very threatening. I like his little white legs.
But this morning, we both noticed an interloper on our wall. Ms. Big Brown Spider . She’s maybe not that much larger than Jumping Spider, but she’s bulkier. Jumping Spider ran in her direction and she retreated, but after JS turned away, Ms. Big took a second look. For a moment, I thought there might be a fight, but eventually they headed off in opposite directions.
I think these are both Hasarius adansoni (Adanson’s House Jumper Spider) of opposite sexes. These “house jumpers” eat mosquitos so I hope they stick around a while.
Japan has some amazing spiders. These little guys aren’t too impressive, but check out Common Spiders in Japan to see a gallery of spiders with good photos.
