DOCTERS VAN Leeuwen : Some galls from Hongkong. 



273 



the gall, were studied by Dr. Karny, who discovered the following 

 species: Cryptotlirips nov. spec. (vie. nigripes); Gynaikothrips iizeli ZiMM.; 

 Leptofhrips constrictus Karny and Mesot/irips Jora'ani ZiMM. 



Hongkong, along roadsides, 6 Nov. 1920. No. 4912. 



New-Territory, near the railway station of Sha-Tin. 



10 Nov. 1920. No. 4947. 



Literature: D. v. L. Java. il. No. 41. 



No. 14. Ficus rctusa L. 



A leaf-gali caused by a gallmidge. 



Small light green fiât swellings on both sides of the leafblade niostly 

 more or !ess arranged in a row from the base to the apex of the leaf, 

 or oniy over a part of this distance. Average size about 2 mm. See 



figure 12. Inside there are 2 to 3 very small larval 

 chambers surrounded by a hard tissue. Known aiso 

 from Java. 



New-Territory, Sha-Tin, Railwaystation. 10 Nov. 

 1920. No. 4955. 



Literature: D. v. L. Java V. No. 222. 



No. 15. Ficus spec. 

 A leaf-gall caused by a psyllida. 

 The tree bearing the galls was planted along a 

 roadside on the south side of Hongkong island. 

 .The plant bore no fruit, therefore it was not possible 

 to détermine it. It resembles closely the well known 

 Ficus varieoata Bl. of Java. But this species of Ficus 

 is not mentioned in the flora of Hongkong. Perhaps 

 it is : Ficus ranientacea ROXB. which also has cordate 

 leaves. The galls resemble closely the psyllid gall on 

 Ficus variegata. Thèse ballshaped brown excrescences are found on the 

 upper surface of the leaf, about 5 mm. in diameter. On the lower surface 

 there are only small openings. 



Hongkong, along a roadside. 8 Nov. 1920. Nd. 4930. 

 Literature: D. v. L. Java 111. No. 112. 



Fig. 12. Itonid-galls on 

 Ficus refusa L. X ^, 4- 



No. 16. Ficus spec. 



Bark-gall caused by a psyllida. 



On the bark of the twigs or pétioles of seedlings are developed ballshaped 

 conical light green excrescences from 3—10 mm. in diameter. Inside there 

 is a spacious larval-chamber with a very thin wall. 



Little Hongkong, in shady places, on young seedlings, about 300 feet 

 above sealevel. 8 Nov. 1920. No. 4928. 



