Tigrosa grandis

Picture ID 54065

Picture of Tigrosa grandis - Male - Dorsal

Comments & ID Thoughts

It was longer than an inch. Hairy like a wolf spider. I had never seen a spider with a big chocolate-drop structure on its abdomen like that. The markings on its abdomen indicate that the chocolate-drop structure is not anomalous. I wondered if it were some sort of egg sac. Higher resolution images are available.

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ItsyBitsy
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Hi, this is a Wolf Spider (Lycosidae), Tigrosa grandis. I don’t now what is on the abdomen, it might be from an injury, or just a drop of mud.

TangledWeb
Member

I’m wondering if it might be from a parasitic wasp – either wasp eggs or a leaking wound. I tried to find a similar photo but there is a mind-numbing amount of videos of wasps and spiders fighting to the death.

Additional Pictures

Picture of Tigrosa grandis - Lateral Enlarge Picture
Picture of Tigrosa grandis - Dorsal Enlarge Picture
Picture of Tigrosa grandis - Lateral Enlarge Picture
Picture of Tigrosa grandis - Eyes Enlarge Picture