Hylota cryptica (Fig. 1a) can be separated externally from H. ochracea by its antennomeres V-X slightly elongate (transverse in H. ochracea) and the apical margin of male tergite VIII slightly crenulate (with small teeth in H. ochracea). It can also be differentiated from H. ochracea by its male and female genitalia (Fig. 1b & 1c) (Klimaszewski et al., 2018). Hylota ochracea is known to live in bird nests such as pigeon coops and in nests of several owl species (Brunke & Buffam, 2018; Klimaszewski et al., 2018). It can also be found in decaying matter (Klimaszewski et al., 2018). Until now, the biology of H. cryptica remained unknown, since the species was mostly collected using flight-based traps such as flight intercept, Lindgren funnel, and Malaise traps, but also in dead wood and by beating plants (Klimaszewski et al., 2018; Brunke et al., 2021). It was suspected that this species could have a similar biology as H. ochracea (Brunke & Buffam, 2018; Klimaszewski et al., 2018; Brunke et al., 2021). However, the specimens in the present work were manually sampled by the first author from two nests of the carpenter ant, Camponotus herculeanus (Linnaeus) (Fig. 2), in conifer stumps in two different regions. The nests were both in old mixed forests with a closed canopy. Both ant colonies were mature, each producing brood and numbering over 2000 workers. According to the observations of the first author, no bird nest was observed in the stumps, the latter being entirely colonized by thousands of ants. Given these conditions, it is possible that H. cryptica is myrmecophilous. Further in situ observations will be required to confirm this hypothesis.