(92) 



FIGURE 139. Anal appendages of Annulipalpia: T inodes sp. (A), Holocen trop us pici- 

 cornis (B), Macronema radiatum (C), Hydropsyche nevae (D) 



On the dorsal side of the abdomen, from the 3rd segment on (from the 

 2nd segment in the Psychomytidae, or from the 4th segment in the 

 Rhyacophilidae to the 7th segment, rarely to the 6th segment in Molannidae 

 and Beraeidae, or to the 8th segment in Polycentropodidae), the anterior 

 margin of the segment bears small paired sclerites with posteriorly-directed 

 crotches (Figure 13 7); similar sclerites with anteriorly- directed crotchets 

 or spines are present at the posterior margin of the 5th abdominal segment 

 of the pupa or sometimes posterior to the 3rd (Rhy a c o phi 1 a) or 4th 

 (Agapetus) segments. The pre- and postsegmental dorsal sclerites (the 

 number and arrangement of which are characteristic for the species) form 

 the second part of the clinging apparatus of the pupa, which enable it to move 



84 



