Pachyserica collaris is a species of beetle of the family Scarabaeidae. It is found in India (Assam, Meghalaya).
Adults reach a length of about 8.6âÂÂ9.3 mm. They have a dark reddish-brown, elongate-oval, partly with dark spots. The antennae are yellowish-brown. The surface is entirely dull, except for the shiny labroclypeus. The upper surface has numerous fine, white scale-like hairs arranged in patches, as well as dense, erect, long, thin setae.
The species name is derived from Latin collaris (meaning neck).