[3] The lectotype specimen is held at the Natural History Museum, London and was collected by Hudson from the Humboldt Range in Central Otago.

[4] This weevil has a black body with distinct white or yellowish scales on the sides and middle of the pronotum and forming stripes on the elytra.

Like other Lyperobius species, adult L. hudsoni feed on the leaves, flower stems and developing seeds of speargrass plants.

[4] Habitat degradation, changes in land use and browsing of the host speargrass plants by introduced mammals are threats to Lyperobius weevils.

[4] Unlike Lyperobius huttoni, this species is not protected under Schedule 7 of The 1953 Wildlife Act,[5] despite their vulnerability to rodent predation by being large and flightless.