Apochthonius sp. 1

Order Psuedoscorpiones

Order Pseudoscorpiones

Family Chthoniidae

Cora Layman, '19

Cora Layman, '19

November 3rd, 2016

Lewis and Clark College

Woods Behind Fir Acres Theatre Lot

Lewis and Clark Scientific Wooded Area Behind Fir Acres Theatre Parking Lot

Multnomah County

Collected leaf litter and dirt with our hands and then returned to the Yellow Lab at Lewis and Clark College and set up Berleese Funnels.

Moist dirt and leaf litter in wooded areas.

Fully mature, potentially male specimen. We could tell it was mature due to the four trichobothria (long sensory hairs) on chela hand. We believe it is male due to the prominent genital opercula with sensory hairs, but we are unsure, because properly sexing pseudoscorpions is a long process. We believe is belongs to the family Chthoniidae due to the distinct genital opercula, the paired trichobothria on the dorsal chelate hands, and the fact that there are more leg segments on legs 3 and 4 (6 segments) than legs 1 and 2 (5 segments). We believe it belongs to the genus Apochthonius due to the coxal spines on the ventral side of the specimen only being found on the first coxal segment, which is a key feature of this genus.