33 



vim 



FIGURES 23-26. Musculature of the larva of Limnophilus flavicornis (after Winkler): 



23 - muscles of the prothorax and foreleg of the larva; 24 - muscles of abdominal segments 

 2-9; 25 - muscles of the anal legs; 26 - dorsal longitudinal muscles and alar muscles of the 

 blood vessel. 



ft - femoral-trochanteral muscle, tfv - tibiofemoral ventral muscle, tfd - tibiofemoral 

 dorsal muscle, be - basocoxal prothoracic muscle, fpr - femoral pretarsal muscle, vim - 

 ventral longitudinal muscle of the trunk, cm - cephalic muscles, tpr — tibial-pretarsal 

 muscle, dvm - dorsoventral muscles, adm — accessory dorsal muscle of trunk, ppr - pleural 

 muscle of prothorax, Ctrl — coxal-trochanteral lateral muscle, ctrm — coxal-trochanteral 

 medial muscle. 



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The musculature of the forelegs is illustrated in Figure 23. The muscles 

 of the coxae are situated in the thorax; they originate on the dorsal and 

 pleural sclerites; the forelegs are not only walking organs, they also grasp 

 and have therefore large coxal muscles. 



The musculature of the other leg segments is similar. There are two 

 strong muscles in the coxa: the large adductor and the small abductor of 

 the trochanter; the small femoral-trochanteral-muscle runs from the 

 ventral wall of the trochanter to the basodorsal margin of the femur; the 

 greater part of the femur is filled with the large tibiofemoral muscle, the 

 flexor of the tibiofemoral articulation, extending from the basodorsal wall 

 of the femur to the ventral margin of the base of the tibia (m. femorotibialis 

 ventralis); a smaller tibiofemoral dorsal muscle lies in the distal part, 

 the extensor of the tibiofemoral joint (m. femorotibialis dorsalis); inside 

 the tibia passes the tibial-pretarsal muscle consisting of a number of 

 subdorsally originating bundles; the tendon of this muscle passes through 

 the tarsus and reaches the pretarsus; the tarsus is without muscles. 



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