(Lapsus calami) Glischrochilus (sometimes misspelled as Glisrochilus)[note 1] is a genus of sap-feeding and predatory beetles under the family Nitidulidae, subfamily Cryptarchinae.

Glischrochilus are oblong shiny black beetles with attractive yellow, red, or orange markings on their elytra.

Their elytra are short and expose the upper surface of their last abdominal segments, a good way to distinguish them from the superficially similar but generally larger Megalodacne beetles.

It takes a little over a month for picnic beetles to develop from egg to adult and only one generation is produced each year.

[4][5] Glischrochilus beetles from the subgenus Librodor, consisting the majority of species in the genus, feed on exuding sap from injured trees and decaying vegetable or fungal matter.

[7] They are also considered pests of certain fruit and vegetable crops like strawberries, corn, tomatoes, apricot, melons, raspberries, and peaches.