503 



parasite, Prospaltella perniciosi, Tower, is becoming less effective. 

 Pyrausta nubilalis, Hb., is gradually spreading in the State, although 

 several reports of injury attributed to this pest were on investigation 

 found to be caused by PajMiperna nebris, Gn. {nitela, Gn.), 



Other insects recorded are : Cofiotrachelus nenuphar, Hbst. (plimi 

 curculio) causing severe damage to plimis and apples ; Heterocordylus 

 malinus, Rent., and Lygidea mendax, Reut. (red bugs) ; Macrodactylus 

 subspinosus, F. (rose chafer), which was imusually abundant on 

 grapes, roses and other plants. Galerucella luteola, Mull, (ehii-leaf 

 beetle) and Malacosoma americana, F. (apple-tree tent-caterpillar) 

 were almost absent during the year. Diabrotica vittata, F. (cucumber 

 beetle) and Leptinotarsa decemlineata, Say (Colorado potato beetle) 

 were very abundant, as well as Lenm trilineata, Oliv. (three-Uned potato 

 beetle). Macrosipkum solanifolii, Ashm. (potato aphis) was extremely 

 abundant and appeared about 10 days earher than in the previous 

 year, but had practically disappeared early in August. Beeches and 

 maples were defohated by Heterocampa guttivitta, Wlk., which in the 

 absence of its natural food-plant ' will apparently attack any tree,, 

 including apples, except evergreens and moosewood {Acer penn- 

 lysvanicum) ; a Carabid beetle, Calosoma frigidum, Kiihy, and a bug, 

 Podisus modestus, Dall., were observed feeding on the caterpillars of 

 this moth. 



Anisota rubicunda, F. (striped maple worm) was very numerous, and 

 Pieris {Pontia) rapae, L., was more abundant than usual in September, 

 as also were the squash vine-borer, Melittia satyriniformis, Hb., and 

 Hyphantria cunea, Dru. (fall web-worm) during August. 



Maskew (F.). Reports for the Months of May and June 1919. — Mthly. 

 Bidl. Cal. State Commiss. Hortic., Sacramento, viii, no. 7, July 

 1919, pp. 429-432. 



Insect pests intercepted during May and June included : From 

 Central America : Aspidiotus cyanx)phylli and leery a sp., on bananas ; 

 Pseudococciis sp., on bananas and Hibiscus ; Ceroputo sp., and an 

 ant on orchids. From China : Lepidosaphes gloveri, Parlatoria 

 pergandei and HemicJiionaspis asjndistrae on pomelos ; Araecerus 

 fasciculatus in dried vegetables; Cylas formicarius in sweet potatoes; and 

 Lepidopterous larvae in dry beans and dry roots. From Florida : 

 Lepidosaphes beckii on grape-fruit. From Hawaii : Coleopterous 

 larvae on silver sword ; Pseudococcus bromeliae and Diaspis bromeliae 

 on pineapples ; and Coccus longulus on betel leaves. From Japan : 

 Lepidosaphes ficus on pears ; Pseudococcus eomstocki, Lecanium sp., 

 Pidvinaria sp. and Eulecaniiim cerasorum on wistaria ; mites, Thyri- 

 dopteryx sp. and Lepidopterous pupae on Daphne ; larvae of borers in 

 Japanese cherry ; Coleopterous borers in dead twigs of Acer sp. ; 

 Pseudococcus sp., on Retinospora obtusa and pot plants ; Lepidopterous 

 larvae on cedars, Euonymus and Retinosjyora obtusa ; larvae and 

 pupae of Lepidojjtera on nursery stock ; undetermined Lepidoptera 

 in rice straw used as packing ; Bruchus p)isorum in peas ; Parlatoria 

 piergandei var. camelliae on camelhas ; Pseudaonidia duplex on azaleas 

 and camellias ; Aphids and thrips on maple ; an Aphid on juniper ; 



