8o 



different species and is highly specialised in the 

 Anophelinae. 



The Antennae. The size and position of the 

 antennal tuft or tufts is of systematic importance. 

 Note the different position of these tufts in different 

 genera of Culicines, e.g., T aeniorhynchus (tenax) and 

 Culex (fatigans) (Fig. 28). In other cases there is 

 considerable variety in position in different species of 

 the same genus, e.g., Culex. Note the peculiar 

 antennae of the cannibal larvae C. concolor and Mucidus 

 spp., Scata-phagoides spp. In Stegomyia (calopus) 

 the antenna is small and spineless and possess a single 

 hair about the middle (Fig. 28). 



The mouth -parts: 



(a) The Clypeus. The front portion of the head 

 projecting between the antennae is smooth and semi- 

 circular in shape. The most anterior portion is the 

 clypeus. 



(b) Feeding Brushes. These are attached on each 

 side to the under surface of the clypeus. They resemble 

 shaving-brushes and are employed in collecting the 

 minute food particles on which the larva feeds. 



In the fully grown larva a snout-like process bearing 

 a tuft of hairs projects forward between the brushes. 



(c) Mandibles. Are stout chitinous structures one 

 on either side and dorsal to the maxillae and maxillary 

 palps. Each mandible bears stout hairs, for combing 

 the shaving brushes, strong teeth meeting those on its 

 fellow for masticating, and fine hairs which project 

 into the mouth cavity. 



(d) Maxillae. They form a great part of the floor 

 of the mouth. The maxilla is covered with series of 

 hairs which serve the purpose of combing the feeding 

 brushes. 



(e) Maxillary Palps. Articulating with the 



