Aphiilidae of Formosa 4. 5 



tlii' aphids and various other soft-bodied insects. According to Kuwayama 

 (Trans. Formosan Nat. Hist. Soc, xiv, 72), thirteen species of Chrysopide arc 

 known to occur in Formosa. The author has observed an adult of Mantispidae 

 preying upon Phyllaphis fagifoliae Takah. at Tokyo. Kurisaki has recorded that 

 some aphids on Citrus pushed their beaks into the eggs of Chrysqpa boninensis 

 Okam. and C. cognata Okam. and sucked up the sap from them (Insect World, 

 Gifu, xxiv. Xos. 4 and (i). Siuh a fact was also observed by Girault, according 

 to whom a species of aphid on plum inserted the beaks into the eggs of the 

 ladybird, Megilla maculata De Geer and sucked them dry (Ent. News. xix. 

 pp. 132-13:3). 



(Lepidoptera) The larvae of Taraka Jiamada Druce (Lycaenidae) feed mi 

 Oregma japonica Takah. infesting Bambusa in Japan. This butterfly is not 

 found in Formosa, though many species of Oregma are common on Bambusa 

 there. According to van Deventer (Handboek ten Dienste van de Suikerriet- 

 cultuur en de Rietsuiker-fabricage op Java. 1906), in Java, the larvae id' Ephestia- 

 cautella Hamps. (Pyralidae) devour Oregma lanigera Zehnt. on the sugar-cane. 

 In Formosa also, this moth is said to feed on this Oregma and I have observed 

 numerous larvae of Ephestia cautella? in a colony of Oregma bambusicola Takah. 

 at Taihoku. 



(Diptera) Tin- larvae of Chlorqpisca (Oscinidae), Leucopis ( Agronryzidae) 

 and Aphidoletes (Cecidomyiidae), as well as of many Syrphidae, are known to 

 he aphidovorous. Grt enidea and most Gallipterina are usually free from the 

 attacks of these flies. 



(Coleoptera) Lebia (Carabidae) is said to destroy the aphids. Podabrus 

 and other Telephoridae prey upon these insects. I have observed an adult of 

 Idgia flavocollis It. feeding on 3faerosiphum gobonis Mats, and another specie-; 

 of the same family on Oregma bambusifoliae Takah. at Taihoku, and many 

 adults of Podabrus sp devouring Oregma montana van der Goot ? at Sakuraonsen 

 in Taichu-prefecture in May 1924. The larvae and adults of many Coccinellidae 

 which voraciously devour various soft-bodied insects rind their most ordinary and 

 suitable food in the aphids. In Formosa I have collected the following aphido- 

 phagoua ( loccinellidae : 



Coelophora biplagiata Swartz feeding on Macrosiphum formosanum Takah . 

 31. gobonis Mats., RhopcdosipJium pseudobrassicae Davis. Aphis gossypii Glow, 

 A. medicaginis Koch. A. pomi De Geer, -/. saliceti Kalt., Brachysiphoniella 



