Thysdariella fieldiana

The one species of myrmecophile in the genus Semiclaviger .

Diagnosis
Thysdariella is included in the subtribe Thysdariina through the following characters: (1) 4-segmented antennae; (2) eyes present and large; (3) body smooth,  shining, with sparse pubescence; (4) head without constriction behind eyes; (5) humeral  angles rounded; (6) lateral margins of pronotum rounded, not diverging posteriorly; and  (7) presence of large flat plate on ventral surface of head. Thysdariella differs from Thysdarius Fairmaire and Thysdariopsis Jeannel in having last antennal segment shorter  than segment III and pronotum with large, entire, deep median depression.

Distribution
Madagascar