Sarcoptiformes 



355 



References: 



Cooreman, J. 1950. Etude de quelques Canestriniidae (Acari) vivant sur 

 des Chrysomelidae et sur des Carabidae (Insecta Coleoptera). Bull. 

 Inst. Roy. Sci. Nat. de Belgique 26(33) : 1-54. 



Lombardini, G. 1938. Acari Novi II. Mem. Soc. Ent. Ital. 17:118-120. 



. (1943) 1944. Acari. Un Nuovo Genere della famiglia 'Tyro- 



glyphidae." Redia 30:1-24. 



. 1950. Canestriniidae deH'America del Sud (Acarina). Arthropoda 



1(2/4): 279-290. 



Hemisarcoptidae Oudemans, 1908 



Figure 286 



Diagnosis: Measuring about 0.23 to 

 0.34 mm. in length, these mites have an 

 egg-shaped body. Their skin is smooth, 

 shiny, and they have a propodosomal 

 shield. Vertical setae are present. The 

 chelicerae are normal, scissor-shaped, 

 but not denticulate. The legs are short 

 and robust. All tarsi lack claws, but the 

 tip of the tarsus has two strong clawlike 

 spines, with the long stalk of the bell- 

 shaped caruncle attached between 

 them. There is*no sexual dimorphism. 

 Male and female genital openings are 

 far behind coxae iv. Two pairs of geni- 

 tal suckers are present. Males lack ada- 

 nal copulatory suckers. Tarsi in and iv 

 each have a long whiphke seta. 



Figure 286 Hemisarcoptes mains 

 (Shimer). Venter of female. 



Genus: 



Hemisarcoptes Lignieres, 1893 

 Ty^Q. Acarus mains Shimer, 1868 

 Lignieres, 1893) 



( = Hemisarcoptes coccisugiis 



Discussion: Hemisarcoptes malus (Shimer), the only species in the 

 family, is widely distributed and is to be found associated with scale 

 insects. It feeds upon the eggs or the scale itself and at times is nu- 



