Sensilla trichodea type I occur on the distal ends [...] of the antennal
flagellum. They have small conical basal sockets with slender and strongly bent shafts.
written by: Onagbola, E. O., and H. Y. Fadamiro. 2008. Scanning electron microscopy studies of antennal sensilla of Pteromalus cerealellae (Hymenoptera: Pteromalidae). 39:526-535.