Taxonomic history

Cnestus quadrispinosus Sittichaya and Beaver, 2018: 32.

Diagnosis

3.45−4.5 mm long (mean = 4.1 mm; n = 4); 2.2−2.56 times as long as wide (Sittichaya and Beaver 2018). This species can be distinguished from all other Cnestus by the presence of a four large spines (two per elytron), one large spine at the declivital summit on interstriae 3 and a second large spine on interstriae 5 on the lateral margin of the declivity. It can be further distinguished by the absence of a mesonotal mycangial tuft on the pronotal base; elytral declivity unarmed; elongate body; elytral declivity excavated; pronotum from dorsal view type 6; pronotum apex strongly produced, extending to a process with two serrations; mandibles normal; epistoma entire; elytral punctures distinct, clearly uniseriate; interstriae bearing sparse erect hair-like setae; declivital interstriae 2−5 sparsely denticulate; protibia obliquely triangular very slender with 6−7, narrow denticles on outer margin; antennal club type 1, with no sutures visible on the posterior face; and three segmented antennal funicle.

May be confused with

Cnestus bicornioides and Cnestus bicornis (Eggers) (from Indomalayan region)

Distribution

Brunei, West Malaysia, Thailand

Host plants

unknown but has been collected from dipterocarp forests (Sittichaya and Beaver 2018)

DNA data

specimens not available for sequencing