150 LEECHES 



There is a tendency in some genera for the jaws to be reduced 

 and the leech to become macrophagous : 



Haemopis Savigny 1820, widespread in the N. Hemisphere; 

 Philohdella Verrill 1874, N. America; Myxohdella Oka 1917, India, 

 China, Africa; Whitmania Blanchard 1887, India, China, Japan; 

 Americohdella Caballero 1956 { = Cardea Blanchard 1917 pre- 

 occupied) is an aberrant burrowing form from S. America, placed 

 by some authorities in a separate family. 



Other genera include: Democedes Kinberg 1866; Hararhdella 

 Sciacchitano 1941; Hexahdella Verril 1872; Hylacohdella 

 Sciacchitano 1935 ; Monghwaluhdella Sciacchitano 1939 ; Paraobdella 

 Blanchard 1896; Pintohdella Caballero 1937; Praobdella Blanchard 

 1896; Typhlohdella Diesing 1850. 



Family Haemadipsidae Blanchard 1893 



In this family we have the sanguivorous land leeches found most 

 abundantly in S.E. Asia and Indonesia. 



Genera: Haemadipsa Tennent 1861; S.E. Asia from India to 

 China, Japan, Philippines, Borneo, New Guinea, Madagascar, 

 Seychelles; Mesohdella Blanchard 1893, Chili; Nesophilaemon 

 NybeHn 1943, Juan Fernandez; Phytobdella Blanchard 1894, 

 Philippines, New Guinea, Malaya; Planohdella Blanchard 1894, 

 Borneo, Celebes; Tritetrabdella Moore, 1938, Malaya. 



The following genera are distinguished by the loss of the median 

 dorsal jaw: Philaemon Blanchard 1897, Madagascar, Australia, 

 Samoa, S. America, Juan Fernandez; Chtonobdella Grube 1866, 

 Australia and New Guinea; Idiobdella Harding 1913, Seychelles. 



Xerobdella Frauenfeld 1868 from Yugoslavia and Diestecostoma 

 Vaillant 1890 from Mexico and Guatemala are land leeches of 

 aberrant form. Ringuelet (1954) separated them into a new 

 family Xerobdellidae. 



Family Semiscolecidae Scriban and Autrum 1934 

 Central and South American amphibious leeches, related to the 

 Hirudidae, in which the jaws are reduced to a single median dorsal 

 rudiment, the crop has only rudimentary caeca and there is 

 usually more than one pair of testes per segment. 

 Genera: Semiscolex Kinberg 1866; Semiscolecides Augener 1930; 

 Orchibdella Ringuelet 1945; Potamobdella Caballero 1931. 



