HOW TO KNOW THE IMMATURE INSECTS 



/ Y, ^ /a 30b. Labrum and sometimes 



•C- Jil'lJ^ iv x^^^^^^v^-*^^ clypeus subdivided later- 



\C^~^^^}i/ -^^jrVX ^ ^ ad into 3 parts with groups 



'/ M ~^^i ^'*^^^ , o^ setae or spines on the 



r^ ^ lateral portions; head 



deeply retracted within 

 O , . ^^^^ii pro thorax; aquatic or semi- 



aquatic. Fig. 85. 



Fig 85. o. Heed of CI.,; b, C-Lx sp, e. O'^er DIPTERA page 189 



ComptocNidiHS byssinus Schrank. 



31a. Head capsule peg-like, etc., variable in shape and size, not of 



^.-7p^|-^]^~J^~;;^^^— 7|-7~^?^~^-7^^ usual rounded or depress- 



'^-.L:U:,;L4L:Xi^^ ed type. Fig. 86. 



Fig. 86. TMMto •iut« Loew. Order DIPTERA page 189 



31b. Head capsule round type or depressed type 32 



/f^ A 3.5/.^f.^J.5l^ ff^i^^r^ 32a. Mouth parts opposable 

 O^^^^^U^^tJZ^^^ or parable. Fig. 87. 



Fig. 87. iibli* •ikiMnnis Say. Order DIPTERA page 189 

 32b. Chewing mouth parts usually distinct 33 



33a. Abdomen with 11 segments; spiracles, ii present, inconspicuous; 

 several long setae on thorax and abdomen. 

 Fig. 88 Order SIPHONAPTERA 



There ore approxima+e- 

 ly 1,100 described species, 

 ' .2 /^./A/^/z/i^^^/*-/ The larvae are small, 



^ cylindrical, noiiparasitic 



^ , v»-^ <^^^ ^®®^ upon a miscel- 



laneous diet of vegetable 



Fig. 88. C«r«tMliyNM fMciafm Bosc. ^^^ animal debris and 



even the ieces of their 



adults. They frequent the 



floors of human habitations and the nests of their hosts. When fully 



grown, the larvae spin imall cocoons in which they transfer into the 



pupae. 



A^-^<su^^ 33b. Abdomen with 9 or 10 



^^hr'^fZ-^l'-^^ «»gBa«nts; spiracles usual- 



^*^^-^^^^*'''''^!b?5in*t^^ ly present on mesothorax 



'*^%*i*<'^^^^'Svu>*^ ' >di^^r-^^^!^Ni^ U-? *^^^ most abdominal seg- 



:iZ':'.:'iW^-"*-'i.':z' Order COLEOPTERA 



Fig. 89. MI«f«Ni«IHiM 4«klNi L«c. P^KTe 72 



45 



