AphiJidae of Formosa. — I. 15 



Macrosiphoniella formosartemlsiae u. sp. (PL. I, 1, Figs. ()-y). 

 Wingless viviparous female. 



Sliining black. Eyes, cornicles and cauda black. Antennae 

 black, except the base of the 3rd joint which is pale l>rown. Legs 

 black with the bases of femora pale l)rown. • 



Body oval, broadest at the middle of the abdomen, with some 

 moderately long stout hairs. Frontal tubercles very large, with 

 numerous stout hairs, but no capitate ones. Antennae with some 

 moderately long capitate hairs; the 1st joint much larger than the 

 2nd; the ord witli 5-8 small round sensoria in a row near the base, 

 the 4th slightly imbricated, without sensoria; the relative length of 

 joints as follows: III-45, IV-37, V-35, VI-67 (12 + 55). Rostrum 

 reaching the base of middle coxae. Prothorax and abdomen without 

 lateral tubercles. Cornicles imbricated, broadest near the base, 

 slightly constricted at the base, tapering on the apical portion, and 

 reticulated on the distal one third. 



Cauda as long as or a little longer than the cornicle, ensiform, 

 with some long bristles. Legs very slender, with numerous stout 

 knobbed hairs; the 2nd tarsal joint nearly 6 times as long as the 1st. 

 Length of body — 2.2 mm. Antenna— 2.5 mm. 

 Cornicle — 0.5 mm. 



Winged viviparous female. 



Black. Abdomen greenish black. Antennae black, except the 

 3rd joint which is pale brown. Eyes blackish brown. Cornicles and 

 cauda black. Wings hyaline, with pale 3'ellow stigma and pale brown 

 veins. Legs black, except the base of tlie fenuir which is pale brown. 



Body with some stout hairs. Frontal tubercles well develojied 

 and straight on the inner .side. Antennae slender, with some 

 moderately long stout hairs; the 3rd joint not imbricated, with about 

 8 sensoria; the 4th slightly imbricated, without sensoria; the relative 

 length of joints as follows: 111-53, IV-39, V-39, VI-85 (20+65). 



