A SYNOPSIS UF AUSTRALIAN ACARINA — RAINBOW. 177 



the males of Tarsonetnua they are ahiiost at the tip of the 

 abdomen ; in some species the abdomen shows traces of segmen- 

 tation. One species of Pediculoides and two of Tarsonenius have 

 been recorded from Australia. 



Genus Pediculoides, Targioid-Tozzetti. 



■=■ Heteropus, Pal. 



Pediculoides alastoris, Frogg. 



Fediculoidex alastoris, Frogg., Proc. Linn. Soc. N. S. Wales, ix., 

 (2), 1894, p. 259. 



Heteropus alastoris, Frogg., loc. cit. 



Host. — Alastor eriurgus, Sauss. (a solitary wasp). 



Hab. — Granville, N. S. Wales. 



Obs. — Some exotic species of this genus are parasitic on 

 destructive insects. In the gravid female the abdomen swells 

 prodigiously. This is due to the development of the eggs. These 

 not only hatch within the parent, but the young obtain their 

 entire nourishment there, and issue as sexually mature males and 

 females. The new brood usually wander for a time over the 

 mother's body and then pair. Banks figures a normal and a 

 gravid female." 



Genus Tarsonemus, Cu7u:st. 



Tarsonemus bancrofti, Mich, fin.s.j 



'J'arsiiiiciiiKs hancrofti, Mich, (m.s.). Bull. Roy. Gardens Kew, 

 1890, p. 85. 



TarsoneniHs bancrnfti, Insect Life, iii., 1890, p. 31. 



Tars(ine)ni(s bancrofti, March., Bull. Soc. Ent. France, 1902, pp. 

 103, 104. 



'Tdrsoju'iini.^ bancrofti. Banks, Proc. U. States Nat. Mus., xxviii., 

 1904, p. 77 



Host Vlant — Sugar canes, Sacchannii (i/ficinarimi. 



Hab. — Queensland and Barbadoes. 



(Ws. — T. bancrofti, Michael, is associated with the sugar-cane 

 disease known in Queensland as "Red Rust." Tliis disease has 

 been long established in Queensland, Dr. Bancroft having in 



1^ Bunks- Loc. Hi., ]i\\ T-i, 75. f. 144, 146. 



