Carebara panhai

The type series was collected from a cave at twilight zone about 3m from the entrance.

Identification
New species is most similar to Carebara pygmaea. Both species share the following characteristics of major workers:
 * frons with longitudinal striation, while vertex with transverse striation
 * frontal carinae with 3 pairs of erect hairs
 * masticatory margin with 5 teeth (including large apical tooth)
 * antenna 11-segmented with 2-segmented club
 * promesonotum in profile view distinctly convex to form a dome
 * promesonotal suture indistinct
 * propodeal spine short, usually shorter than its base.

However, C. panhai can be easily distinguished from C. pygmaea by the following characteristics:
 * in major workers, frons, vertex dorsa of petiole and post-petiole and first gastral tergite with dense erect hairs (without erect hairs in C. pygmaea)
 * lateral face of pronotum largely smooth and shiny (punctate and reticulate in C. pygmaea)
 * propodeum in minor workers largely smooth and shiny (entirely punctate in C. pygmaea).

Distribution based on Regional Taxon Lists
Oriental Region: Thailand.

Nomenclature

 * . Carebara panhai Jaitrong, Pitaktunsakul & Jantarit, 2021: 9, figs. 1, 2 (s. w.) THAILAND.