516 



Two species of flea-beetles, Phyllotreta {HaUica) nemormn and 

 Haltica oleracea, occurred, the former predominating in some localities. 

 Dry weather and sunshine encourage their increase, the damage being 

 most severe on young root crops on dry slopes. Mangels, swedes 

 and turnips were successively attacked. The common weed, Poly- 

 gomim persicaria, was much infested by the beetles. Farms on which 

 lime and basic slag are regularly used are comparatively free from 

 infestation. Soaking seed in paraffin has proved beneficial. Antho- 

 nomiis pomonim, L. (apple weevil) and Apion apricans, Hbst. (clover 

 weevil) were found upon apple blossom and hay crops respectively. 



Agriotes sp. (w^ireworms) injured oats and swedes, and, less severely,, 

 wheat and potatoes. Farmers who used basic slag freely, or kairdt 

 or a similar substance, seldom complained of attack ; most of the 

 damage was done to second successive crops of oats. A dressing of 

 soot, harrowed in and subsequently rolled, gave excellent results. 

 Phyllopertha horticola, L. (garden chafer) is exceedingly abundant at 

 times on dry, sunny slopes, but is largely controlled by rooks. 



Many Aphids are recorded, a list of these being given with their 

 host-plants. Those of economic importance include Rliopalosiphum 

 ribis, which however is seldom found in appreciable numbers ; Aphis 

 rumicis was abundant on broad beans in 1915 and upon mangels, but. 

 in the following year the infestation was slight on both |)lants ; Macrosi- 

 phum granarium occuvved on black oats, but not to any serious extent ; 

 Eriosoma {Schizoneura) lanigerum is found practically wherever apples 

 are grown, but generally in small numbers. Scale-insects were not 

 common in the area surveyed, with the exception of Chionaspis salicis^ 

 L., which is abundant on ash, birch and various species of Salix. 

 Lepidosaphes ulmi was found on apple and pear, but is seldom of any 

 importance. Eulecanium (Leccmium) persicae, F., and E. {L.) capreae^, 

 L., occurred in private gardens. A list is given of nine species found 

 on indoor and greenhouse plants. 



Cecidomyids included Perrisia crataegi, AVinn., which injures the 

 tips of young hawi^horn shoots, and RhabdopJiaga salicis, Schr., which 

 forms galls on Salix. Tipulids included Tipula oleracea, L., T. lateralis, 

 Meig., and Pedicia rivosa, L., in pasture lands. Hylemyia antiqua, Mg. 

 {Phorbia cepetonmi, Bch.) (onion fly) was observed on leeks ; mangels 

 were found blistered, apparently by Pegomyia hyoscyami (mangel fly), 

 though the adult fhes were not observed. Minor pests included 

 Lipura ambulans, L., on leeks and French beans, Sminthurus luteus, 

 Lubb., on field mushrooms, several species of ants, wasps and bumble 

 bees. Apis mellifica (honey bee) has suffered severely from Isle of 

 Wight disease near Aberystwyth, though country hives are as yet free 

 from the disease. Pteronus {Nematus) ribesii, Scop, (gooseberry 

 sawfly) attacked gooseberries and red currants. Mites included 

 Eriophyes ribis, Nal., E. avellanae, Am.ev\., on hazels, and Tyroglyphus 

 longior, found destroying an oat rick. 



Bales (N. B.). The Life-History and Economy of the Cheese Mites. — 



Ann. App. Biol., London, iv, nos. 1 & 2, September 1917, pp. 28-35. 



The losses due to the depredations of cheese mites are considerable. 

 Four species attack cheese : Carpoglyphus anonymus infesting Cheddar,, 

 and Tyroglyphus siro, T. longior and Aleurobius farinae attacking both. 



