|Option 1||Option 2|
|Pronotum excised 1/3rd anterolaterally to accommodate coxae (sf 19.165) ||Pronotum excised 2/3rds anterolaterally to accommodate coxae (sf 19.166)|
|Dome-like case of stones with transverse ventral strap of finer sand and interchangeable ends (sf 19.38, 19.459a, 19.459b)||Case similar to that at left|
1 Example Specimen
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
No further information about this genus is available on Troutnut.com at this time.