Sarcoptiformes 



361 



Discussion: The only known species, Linobia coccinellae (Scopoli), 

 has been taken from under the elytra of Melasoma populi in Italy. 



Reference: 



Berlese, A. 1887. Acari, Myriopoda et Scorpiones, Crypt. Fasc. XXXIX, 



No. 7. 



Nanacaridae Oudemans, 1923 



Figures 292, 293 



Diagnosis: These mites have a shiny skin and possibly no propo- 

 dosomal shield. On the posterior part of the propodosoma is a cross 

 row of four setae, the inner pair being much shorter than the outer. 



tz^> 



Figure 292 Nanacarus minutiis 

 (Oudemans). Dorsum of female; 

 tarsus II of female. (After Oudemans 

 1928) 



Figure 293 Nanacarus minutus 

 (Oudemans). Venter of female. (After 

 Oudemans 1928) 



There are no cervical setae, but a pair of vertical setae is present. Male 

 and female genital openings are behind coxae iv. The males have ad- 

 anal copulatory suckers but do not have suckers on tarsi iv. All tarsi 

 have only a caruncle and no claws, (in the immature stage there is 

 a weakly developed claw). The tarsal tip is pointed, clawlike, and 

 curved; legs without long, whiplike setae. 



Genera: 



1. Nanacarus Oudemans, 1902 (= Froweinia Oudemans, 1923) 

 Type. Hypopus minutus Oudemans, 1902 



2. Giardius Perraud, 1896 



Type. Giardius vitis Perraud, 1896 



