Notice: Because of the federal government shutdown, Bureau.gov is not being updated and the agency will not be able to respond to inquiries until appropriations are enacted. For more information please visit: https://www.doi.gov/shutdown

Question 1

Go to Question:

2a. Caudal ramus with 4 well developed setae (plus one slender outer seta frequently directed across the others and a slender inner seta).

Senecella calanoides

2b. Caudal ramus with 3 to 5 well-developed setae.

Question 3