The number and arrangements of the abdominal trichobothria of nymphs and adults in the subfamily Cephalocteinae are described and illustrated. Three types of abdominal trichobothrial patterns were recognized (contrary to all previous data indicating a single uniform type for the whole subfamily), and two different numbers of trichobothria on ventrites III—VII were recorded: 2+2 in adults of Cephalocteus Dufour, 1843, Pseudostibaropus J. A. Lis, 1991, Scaptocoris Perty, 1833, and Stibaropus Dallas, 1851; 1 + 1 in adults of Schiodtella Signoret, 1882, and Atarsocoris Becker, 1967. The abdominal trichobothria of the 5th instar nymphs of Scaptocoris australis J. A. Lis, 1999 and Stibaropus pseudominor J. A. Lis, 1991 were studied and their number and arrangements were found the same as for adults. The taxonomic and phylogenetic significance of the number and arrangement of abdominal trichobothria in the Cephalocteinae is briefly discussed.
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