[2] The pedipalps, legs, and segments of the metasoma display a coloration ranging from yellow to reddish-brown, accentuated by black spots.

[2] The specific epithet problematicus is derived from Latin and reflects the previous challenges encountered in identification of the species.

[2] The species can be distinguished from others within its genus Reddyanus, which was previously considered a subgenus of Isometrus, based on specific features.

R. problematicus displays a range of 9 to 12 pectinal teeth, which are sensory organs located on the ventral side of the body.

[2][3] The chelicera, a part of the arachnid anatomy related to feeding, displays a reticulated (net-like) pattern.

[2] The mesosoma (middle part of the body) is also predominantly black with a faint yellow pattern and is characterized by a granulated texture; it features a single median carina.

The sixth cutting edge of the movable fingers bears one external granule, contributing to their functionality and grip.