Apkididae of Formosa. — 4. 23 



Dorsum of the body with many tubercles each bearing a capitate hair. 

 Pronotum with <S capitate hairs. Meso-and nietathoracic segments each at the 

 middle of the dorsum with 4 stout tubercles arranged in a transverse row, 1 or 

 4 very small capitate hairs in front of these 4 tubercles and 2 or 3 tubercles 

 ■ •li either side. Basal 7 abdominal segments each at the middle of the dorsum 

 with 4 stout tubercles arranged in a transverse row and a similar tubercle on 

 the side: basal one or two abdominal segments sometimes with a very short 

 capitate hair at the middle of the dorsum; the 8th segment with about 5 very 

 small tubercles arranged in a transverse row on the dorsum. The 4 tubercles at 

 the middle of the dorsum of each of the meso-and metathoracic and mosl 

 abdominal segments stout, somewhal narrowed toward the apex, each bearing a 

 capitate hair which is almost a- long as or shorter than the tubercle; of these 

 4 tubercles the inner two larger, almost as long as or longer than the 2ml 

 antennal joint, and those on the posterior segments somewhat larger than those 

 on the anterior segments. 



Length of body — about 1.8 mm. Antenna — about 1.65 mm. 



Cornicle — about 0.5 mm. 



Host. — Rubus sp. 



Distribution — Formosa : Sakuraonsen in Taichu-prefecture. 



Some apterous females were collected by the author on Maj lo'. 1!>24. 

 This species i< distinguishable from M. rtibi Mats, by the shorter tubercles on 

 the dorsum. 



Amphorophora viburni n. sp. 



(PI. II. A. figs. 5-8 & PL II. B, fig. I) 



Winged viviparous female 



Green. Antennae dusky. Cornicles green, with the tins somewhat dusky. 



Cauda green. Legs mostly greenish. Head on the dorsum provided with 8 



moderately long setae. Frontal tubercles very short, scarcely convex on the inner 



side. Antennae provided with a few very short setae: the 1st joint much stouter, 



and a little longer than the 2ml : the 3rd not imbricated, furnished with about 



45 rather large, circular or subcircular sensoria scattered over the whole length : 



flic 4th somewhat imbricated, provided with from 8-10 similar sensoria not 



arranged in a single row ; the 5th provided with no or from 1-3 sensoria. the 



apical primary sensorium of moderate size; the relative length of joints about 



