Harvesman

Harvesman

Observation - Harvesman - UK and Ireland. Description: A harvestman with 2 bright orange blobs on its back. There were several others with the same blobs on their backs nearby. Can anyone tell me what the blobs are?

A harvestman with 2 bright orange blobs on its back. There were several others with the same blobs on their backs nearby. Can anyone tell me what the blobs are?