170 Acarology 



Sumatra, Hevea sp. in the Netherlands Indies, tomato, cyclamen, del- 

 phinium in the United States, and cotton in the Belgian Congo. 



Tarsonemiis sp. have also been recorded as being taken from lungs 

 of persons suffering from asthma and other respiratory ailments. 



References: 



Carter, H., G. Wedd, and V. St. E. D'Abrera. 1944. The occurrence of 



mites (Acarina) in human sputum and their possible significance. 



India Med. Gaz. 79(4) : 163-168. 

 Ewing, H. E. 1939. A revision of the mites of the subfamily Tarsoneminae 



of North America, the West Indies, and the Hawaiian Islands. U.S. 



Dept. Agr. Tech. Bull. 653. 

 Hambleton, E. J. 1938. A ocorrencia do acaro tropical "Tarsonemus latus 



Banks," (Acar. Tarsonemidae). Causador da rasgadura das folhas 



nos algodoais de S. Paulo. Arch. Inst. Biol. [Sao Paulo] 9(19) : 201- 



209, Pis. 19-23. 

 Moznette, G. F. 1917. The cyclamen mite. J. Agr. Res. 10(8) :373-390. 

 Soysa, E., and M. Jayawardena. 1945. Pulmonary acariasis: a possible 



cause of asthma. Brit. Med. J. No. 4383, pp. 1-6. 

 Vrydagh, J. M. 1942. Etude de I'acariose du cotonnier, causee par Hemi- 



tarsonemus latus (Banks) au Congo Beige. Pubs. Inst. Natl, pour 



I'Etude Agron. Congo Beige, Ser. Sci., No. 28. 



PROSTIGMATA KRAMER, 1877 



These mites have a respiratory system with the stigma opening at 

 or near the base of the chelicerae. 



Key to the Prostigtnata 



1. Body normal; shape neither wormlike nor annulate 2 



Body small, wormlike, annulate; with eight legs; parasites in skin 

 pores Demodicidae 



2. Living on land 3 

 Living in water Hydrachnellae ^ 



3. Without thumb-claw process on palpus 4 



With thumb-claw process on palpus composed of spine or claw 

 on palpal tibia and ventrally placed palpal tarsus 21 



4. Gnathosoma extended into very long, conelike process 5 

 Gnathosoma short, not conelike 7 



1 The "water mites" are included as a complete unit with keys to simplify presentation. 



