426 



(beetles), Gnathocerus conwtns (larvae and beetles), Sitodrepa panicea 

 (beetles), Crioceris lilii (beetles), Sitones (Sitona) sp. (beetles), Coccinella 

 sp. (larvae), Syrphid larvae, ants, Porthetria {Lymantria) dispar 

 (caterpillars), and Ejphestia Hihniella (caterpillars). A mortality ol 90 

 per cent, was attained with Lacnwphloeus fermgmeus and of 95 per 

 cent, with Nygmia phaeorrJioea {Euproctis chrysorrJioea). 



Zacher (F.). Die Schadlinge der Kartoffeln. 2. Schadlinge an der 

 unterirdischen Teilen der Kartoffelpflanze, [Potato Pests. 2. 

 Pests of the Underground Portions of the Potato Plant.] — 

 Separate from Der Kartoffelhay , {sine loco], iii, nos. 16 & 18, 16th 

 October & 16th November 1919, 4 pp., 5 figs. [Received 1st 

 July 1920.] 



The j)otato pests dealt with include millipedes, the mites, 

 Rhizoglyplms echinopus, C. & F., and Histiostoma rostroserratum, 

 Megn., and mole -crickets, Gryllotalpa gryllotalpa (vidgaris). In the 

 case of the latter the author found animal lood in 2 individuals, 

 vegetable in 8 and mixed animal and vegetable debris in 38. The 

 measures advised against mole-crickets are traps, flooding the galleries 

 and poison-baits. 



Zacher (F.). Schadlingsplagen im Werderschen Obstbaubezirk. 



[Insect Pests in the Werder Fruit-growing District.] — Separate, 

 issued by the Biol. Reichsanst. Land- u. Forstivirtseh., Berlin, 

 from Mitt. DentscJien Landtvirtsch.-Gesell., 1920, no. 24, 2 pp. 



Fruit-growers in the Werder district of Brandenburg suffered con 

 siderable losses in 1920 from msect and fungus enemies. 



The caterpillars of Cheiniatobia (Oj^erophtJiera) brumata, L., were 

 abundant and injured cherries and gooseberries. Apples were attacked 

 by this moth and by AntJionomus jjoniorvm and Eriosoma {Tmetocera) 

 ocellana. Other injurious insects were Argyropiloce {Olethreufes)i 

 variegana, Hb., Blastodacna hellerella, Dup., Aporia crataegi, L., 

 Nygmia phaeorrJioea, Don. {Eujiroctis chrysorrhoea), Malacosoma 

 neustria, L., Ddoba coendeocephala, L., Psylla mali, Schm., and the 

 woolly aphis [Eriosoma lanigervm,]. The two last-named did much 

 damage in many places. Apples, pears and cherries were severely 

 infested by OtiorrhyncJws rancus, and cherries and strawberries 

 by Cneorrhimis jjlagiatus {geminatus). The gooseberry sawfly, 

 Nemafns sp., and the gooseberry mite, Bryobia praetiosa, Koch. 

 were in evidence. Hyponomeuta malinellus, Z., appears to be 

 increasing. Around Berlin severe infestations by Hoplocampu 

 fulvicornis, Htg., occurred. 



Zacher (F.). Vorlaufige Diagnosen einiger neuer Spinnmilbearten. 



[Preliminary Descriptions of some new Spinning Mites.] — Berliv. 

 Typed leaflet issued 17th May 1920 by the author. 



The following new species are described :■ — Paratetranychii s gossypu 

 from cotton in Togo, West Africa ; Tetranychvs salicicola from Avillo\A 

 and poplar in Berlin and the Island of Riigen ; TeiranycJws {Epitetrawj- 

 chus) viennensis from apple, pear and heart-cherry in Vienna and Berhn 



