Entomology

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Fig: Antenna of thrips                                       fig: Antenna of thrips

Characteristics:                                                                                                                      

1.   Antenna moniliform type.
                                                                                                                                 
2. Bead like structure.
                                                                                                                    
3. Constriction present in each segmented.
                                                                                                
4. The number of antennal segments varies from six to nine among Thripidae, and the                           sensoria (trichomes) on segments III and IV are characteristically Y-shaped but sometimes simple.

5. Antennal segmented 3&4with slender sense cones, which are simple or forked .
                    
6. Most Thripidae have the antennae 7-segmented or 8-segmented, and the comparatively rare 9-  segmented condition in this family is possibly derived secondarily rather than an inherited ancestral condition.