•26 
htdian Forest lleconls. 
[Vor,. II. 
Part IV : THE SCALE INSECT OF THE OAK. 
KEK'WES HIMALAYENSIS, Green. 
(The Ban Oak Grey Scale.) 
Eeference. — Green, Ent. Monthly Mug. 1908. 
Neture of Attack. 
This scale insect thickly encrusts the branches, twigs, leaf stalks, 
leaves, and buds of the Ban oak, sucking- out the sap and tinally, when 
abundant, killing the tree. 
Previous Records of the Insect. 
1 have no previous record of this pest and at the time of its discovery 
was of the opinion that it had never been previously recorded in this 
connection. 
This surmise was corroborated by Mr. Ernest Green, Government 
Entomologist, Ceylon, the well-known expert on this family. The genus 
is known to infest oaks in Europe and North America. In the Catalogue 
of the Coccidae of the World* Fernald gives a list of 28 species of this 
genus, all of which, with the exception of one living on an Acacia, infest 
species of Enropean and North American oak. This fact adds pecnliar 
interest to the discovery of the genus in India on one of the Himalayan 
oaks. 
Distributiou. 
At present the insect has only been reported from the Ban oak forest 
on the hills to the north of Bhim Tal in the Almora District in the 
N.-W. Himalaya. 
Oescription. 
Eggs. — Elongate, tiny, white, with a white filamentous papery shell 
covering ; enclosed in considerable numbers beneath the dome-shaped 
scale, forming a fine white mass of elongate bodies {vide Plate VII, fig. I). 
Newly hatched small scale . — Very small, reddish brown in colour, 
consisting of a head and 1’2 segments. The antennin are short and small 
and there are a pair of long anal appendages (fig. 2). 
* A Catalogue of the CocL-iflEB of the Worhl by M. E. Fernald, Bulletiu No. 88, Hatch 
Experimental Station of the Massachusetts Agricultural College. 
