Fruitbody - associated insects constitute a very important component of forest entomofauna. Different ecological groups of fungi host many insect species and supply a wealthy habitat for them. In present study, an ascomycete species Daldinia concentrica (Bolton) Ces. & De Not is evaluated as habitat for insects. Stromata (fruitbodies) of D. concentrica were collected from dead and dying ash trees in Sariyer Istanbul in 2016. Stromata were placed separately in plastic containers and left under the laboratory conditions, then insects emerged from stromata were identified. In our study was found, 11 insect species inhabited D. concentrica. We can say that four of them are obligate fungivores, two are facultative fungivores and the others accidental users of stromata. In addition, Orthocis lucasi (Abeille de Perrin) and Dacne bipustulata (Thunberg) are known preferring basidiocarps of polypores, but our study reveals that these species can use an ascomycete.