MUSCID^E 21 i 



Of these groups : (i) Anthomyidae includes the species 

 most commonly represented in intestinal myiasis in tem- 

 perate climates, as Homalomyia canicularis, and Anthomyia 

 desjardensis is said to be not infrequent in Angola. 



(2) Muscidce are the most important group, and are 

 subdivided according to the characters of mouth-parts, 

 palps, character of hairs on antennae, and minor differ- 

 ences in wing venation, particularly in the fourth longi- 

 tudinal vein, presence of hairs on hypopleura (fig. 89) 

 and coloration, into "genera." 



Mouth-parts formed for penetration i 



Mouth-parts suctorial and not suitable for penetration 2 



(i) Includes Glossina, Stomoxys, Hasmatobia, &c. 

 considered in Part I., as some of these are 

 carriers of protozoa 



/No hypopleural bristles ; no bristle on inner 



(2)! side of middle tibia Musca. 



a j Hypopleural bristles ; bristles on inner side of 



( middle tibia 3 



rLarge brown flies 4 



b -I Black or brown or of dull metallic appearance 5 



[Flies with brilliant metallic lustre 6 



/ Second abdominal segment not enlarged ; 



$ eyes close together Cordylobia. 



"j ? Second abdominal segment greatly enlarged: 



( $ eyes not approximated Aitchmeromyia. 



j ( Mesonotum not flattened Calliphora. 



\ Mesonotum flattened behind transverse suture Protocalliphora. 



/'Blue or green flies without longitudinal bands 



on mesonotum Lucilia. 



Blue and green flies with marked longitudinal 



bands on mesonotum Chrysomyia. 



Blue and green flies with dark bands on abdo-^ 



men I Pycnosoma, 



Stumpy flies with large heads and in the male | 

 x with the eyes in contact / 



Cases both of intestinal and cutaneous myiasis are 

 attributed to various species of Sarcophaga. 



CEstridce are of special importance, particularly in 

 South America, as the various species of Dermatobia 

 belong to this family, whilst in other parts of the world 

 (Estrus may attack man as well as the lower animals. 



e ^ 



