Bifidochaetus

unkeeled scales without incision
Scale bears a spine that splits at the base into two branches of equal length
constriction at the base of the furca

Diagnosis

unkeeled scales without incision
Scale bears a spine that splits at the base into two branches of equal length
constriction at the base of the furca

2 Species:

Bifidochaetus articus

137 µm - 154 µm
Dorsal scales: 36-45 rows, each with 30-42 triangularly rounded, non-overlapping scales; scales bear a cleft spine (5-11 µm)
Ventral scales: Ventral intercilliary field naked except for posterior end; here 3-5 rows of 5 oval scales each; two terminal plates.

Bifidochaetus veronicae

123 µm - 135 µm
Dorsal scales: 16-19 rows of 27-30 suboval overlapping scales (3x3 µm) each with a cleft spine (9µm); one pair of parafurcal spines (14-16 µm).
Ventral scales: Ventral intercilliary field naked except for posterior third, which bears small, oval keels (2x2 µm); two keeled terminal plates (6x4 µm); 7-8 terminal spines (10-14 µm).
Particularities: split spines