NO. 15 



ARTHROPOD HOSTS OF HELMINTHS HALL 



Cestoda 



No. of host 

 Intermediate spp. 



host group involved 



Crustacea: 



Copepoda 27 



Ostracoda 15 



Amphipoda i 



Decapoda 2 



Cladocera 2 



Insecta : 



Coleoptera 8 



Siphonaptera 7 



Diptera 2 



Lepidoptera 4 



Odonata 2 



Dermaptera i 



Mallophaga i 



MVRIAPODA . . .'. 2 



No. of parasite spp. 



with known hosts 



for adults 



29 



6 

 5 

 3 

 I 



9 

 4 

 4 

 I 

 I 

 2 

 I 

 I 



No. of parasite 



spp. reported as 



larvae without 



known hosts 



for adults 



As intermediate hosts for tapeworms of land animals, the Coleop- 

 tera are distinctly the most important group, other insect groups being 

 of much less importance so far as we know. 



Trematoda 



No. of parasite 

 spp. reported as 

 No. of host No. of parasite spp. larvae without 



Intermediate spp. with known hosts known hosts 



host group involved for adults for adults 



Crustacea : 



Decapoda IS 8 4 



Amphipoda 3 i 4 



Copepoda 3 2 i 



Branchiopoda i o i 



Insecta: 



Diptera 11 2 8 



Trichoptera 11 2 4 



Odonata 8 6 2 



Ephemerida 5 5 ^ 



Coleoptera 3 3 ^ 



Unplaced insects 2 4. o 



Neuroptera; 2 o 3 



Plecoptera 2 i 



Lepidoptera i o i 



Among the Crustacea, the Decapoda are of outstanding importance 

 as hosts for flukes, some of these flukes occurring in land mammals 

 which eat raw crabs or crayfish. 



