SPINNING MITES. 



109 



CASE stand facing a little outwards, so as to make the mouth look 



viii. ... 



emargmate. It is semi-transparent, with a faint blush of flesh- 

 colour. 



The eggs of these mites are garnet-red in colour, and are to be 

 seen early in the spring on the young buds of clover. The larvae 

 which are out spread themselves over the hairy underside of the 

 leaves, which, in consequence of continued sucking, become 

 covered with yellow punctures. 



In buds injured by Phytopti we have found in place of them, 

 in July, what we suppose to be this 

 Tetranychus ; but instead of hundreds 

 in a single bud we have only met one 

 or two here and there. 



Nos. II, 

 12, 13, 

 14. IS. 



Tetranychus eriostemi {Murr. n. s.). — 

 11. Specimen of leaves of Eriostemon 

 neriifolium attacked by ditto. 12. Mag- 

 nified sketch of leaf showing the mischief. 

 13. Twig showing mischief on ditto. 14. 

 Magnified sketch of ditto. 15. Magnified 

 sketch of insect. 



Tetranychus eriostemi. 



This species is found on plants of 

 Eriostemon neriifolium in greenhouses in the neighbourhood of 

 London, and, no doubt, elsewhere. It injures the plant consider- 

 ably, making unsightly ulcerous-looking scars on the stems and 

 branchlets, and white blotches on the leaves. It is a more 

 clumsy thick-legged species than the others. 



Nos. Tetranychus autumnalis {Shaw) (the harvest 

 »6, 17 bug — le rouget of the French ; the Leptus au- 



tumnalis of authors); 16, Magnified figure of 

 larva. 17. Magnified figure of perfect insect 

 on under side. 



Until Claparede drew attention to the 

 fact, that all the characters of this species 

 were those of a Tetranychus, it was gene- 

 rally regarded as a Trombidium — and in 



Tetranychus (Leptus) autumnalis 

 larval form. 



