A NEW MYMARID FROM JAVA. 161 



July alatfe appear and fly to the potatoes, returning to roses in 

 the autumn to produce sexuales. 



Myzus solani, Kaltenbach. 



Myzus solani, Kaltenbach, is much more abundant on potatoes 

 and frequently swarms and does damage. I have records of this 

 from Ross-shire, N.B. (Miss D. Jackson), down to South Devon. 

 So far it has only been found on potatoes. The apterous female 

 only was described by Kaltenbach, so I append a description of 

 the alate viviparous female, as follows : — 



Green ; thorax darkened ; antennae about as long as the body, 

 third segment, apical half of fourth and fifth and all the sixth dark. 

 Apices of tibiae and all the tarsi dark, also tips of cornicles and pro- 

 boscis. Eyes dark red and black. Third antennal segment with 

 23-27 sensoria, some small, most large, on one side, extending to 

 near apex ; fourth segment a little longer than fifth ; sixth about 

 equal to four and five. Hairs on head and antennae simple. Pro- 

 boscis reaching to second coxffi. Cornicles pale green, cylindrical, 

 shorter than third antennal segment, one or two striae across apex, 

 rest imbricated. Cauda j)ale yellowish-green, finely spinose, with 

 three pale hairs on each side. Wings normal ; insertions yellow, 

 stigma yellowish -brown ; veins yellowish-green. 



Length. — 2-5 mm. 



Three other Aphides occur on potatoes in this country, namely 

 hhopalosiphvm dlnithi, Schrank, which is frequently very common, 

 R. tuberosellce, Theobald, possibly only a variety of the former, 

 and an aphis with short antennae which I take to be Aphis solanina 

 of Passerini. 



The olive-brown Aphis sili/bi of Passerini I have found only 

 once in Cornwall. 



Chermes cooleyi var. coweni, Gillette. 

 Some debris of a Chermes sent me by Dr. A. Henry taken on 

 the Douglas Fir in Surrey, the New Forest, and Ireland appear 

 to be this species recorded on the Red Fir [PsendotsiKja mucronata) 

 and Blue Spruce {Picea parryana) from Colorado by Gillette, 

 who describes the species cooleyi and the variety, vide 'Proceed- 

 ings of the Academy of Natural Sciences of Philadelphia,' January, 

 1907, pp. 3-10 and 10-14 (Pis. i-vii). It is hoped that anyone 

 finding a Chermes on this conifer will send fresh specimens so 

 that it can be definitelv identified. 



A NEW MYMAPJD FROM JAVA. 



By Alan P. Dodd. 



Gonatocerus lucidus, n. s. 



9 . Thorax and legs rich orange-yellow ; head pale yellow ; eyes 



and ocelli black ; abdomen dusky ; antennal scape yellow at base, 



dusky at apex, the flagellum dusky- black. 



Head normal ; eyes large, bare • ocelli close together ; frons de- 



ENTOM. JULY, 1919. P 



