Apkididae of Formi >sa 4. o ] 



(3) Antennae provided with more hairs which are longer. The 3rd joint 

 nt' tlit- apterous form not imbricated, the 4th faintly imbricated. Tin- 3rd and 

 4th joints ut' the winged form furnished with fewer sensoria almost arranged in 

 a row. 



(4) Cornicles longer. 



M. polypodicola Takah. and M. looochcardiai Takah. resemble Macrosipkum 

 in the cornicles which are reticulated on the distal portion. 



Capitophorus sp. 



(PI. II. A. tig. 1) 

 Wingless viviparous female 



White, with white cornicles and cauda. Body oblong, soft, the whole 

 dorsum provided with numerous very long capitate hairs that are almost as long as 

 or slightly longer than the basal part of the 6th antenna! joint. Head on the 

 dorsum furnished with about 8 capitate hairs. Eyes small. Frontal tubercles 

 short. Antennae long and slender: the 1st joint angulated on tin- inner side, 

 with a tew stout capitate hairs which are somewhat shorter than the 2nd 

 antenna] joint; the 3rd scarcely imbricated, furnished with about ii very stout 

 capitate hairs which are almost as long a- those on the 1st. without sensoria; 

 tin- 4th and the following somewhat imbricated, provided with a few very small 

 hairs: the relative length of joints about as follows: III-GO, 1 V-45, V-59, VI- 

 20+? 140. Rostrum reaching beyond the middle coxae. Cornicles very long 

 and slender, cylindrical, slightly expanded toward the base, si, inter than the 

 tibia, somewhat curved, moderately imbricated except on the distal portion, nol 

 reticulated, shorter than the distal part of tin- last antennal joint. Cauda very 

 stout, almost as long as the capitate hair on the hind portion of the abdomen. 

 Legs very long and slender: tibiae with many not capitate hairs, the basal 

 portions furnished with a few capitate hairs; front tibiae almost as long as the 

 cornicle; hind tarsi almost as long as the basal part of the last antennal join;. 



Length of body — about 1.5 mm. Cornicle — about 0.5 mm. 



Host. — Petasites trichdobus. 



Distribution. — Formosa : Sankakuho (altitude about 7500 feet) in Taichu- 

 prefecture. 



An apterous female was collected by the author on May lib 1!'24. 



Hitherto unrecorded from Formosa. 



