**3.5.3.4 Sensilla trichodea 4**

234 Gamma Radiation

Fig. 3. SEM photomicrographs of non-irradiated adult antenna of *Rhynchophorus Ferrugineus.*  (A): Sensilla coeloconica 3 (C3) on the funicle, (B): Sensilla trichodea 1,2,3 (T1,T2,T3) and Cuticular pores as arrowheads on the lateral side of the club, (C): Bifurcat trichodea 2 (T2) on the lateral side of the club, (D): Sensilla chaetica1 (Ch1) on the lateral side of the club, (E): Sensilla chaetica 2 (Ch2) on the surface of the club, (F): Sensilla Basiconica 2 (B2), Sensilla Trichodea 4 (T4) and Sensilla chaetica1(Ch1) on the surface of the club. [Scale bars indicate

20 µm (A, C, D), 100 µm (B), 50 µm (E) and 10 µm (F), respectively]

These S. trichodea are present only in a few number on the surface of the club and are smooth –walled. Most of them have about the same length of S. chaetica 1 on the surface of club. The apical part of these sensilla is remarkable split into two branches. These branches are different in length and diameter and they are straight or slightly curved (Fig. 3F).
