Eumesosoma roeweri
(Goodnight & Goodnight, 1943)
Eumesosoma roeweri is a harvestman in the Sclerosomatidae. Research has focused on its freezing as an anti- defense, demonstrating that individuals adjust freeze duration based on environmental light levels. This behavior represents a documented trade-off between survival and foraging .
Pronunciation
How to pronounce Eumesosoma roeweri: //ˌjuːmɛsoʊˈsoʊmə ˈroʊwəri//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Images
Distribution
Recorded from multiple counties including Antelope, Archer, Audubon, Austin, and Barber.
Behavior
Freezing serves as the primary anti- defense. Freeze duration increases with substrate luminosity: individuals remain motionless longer on brighter substrates. This response suggests visual predator avoidance, as longer freezing bouts reduce detection risk. The behavior imposes measurable foraging costs, creating a documented trade-off between risk reduction and feeding opportunity loss.