186 



in Europe and North America as the "greenhouse thrips." In 

 Trinidad it is most numerous on leaves of cacao and coffee, and 

 sometimes on cotton, but is never a serious pest. Other food-plants 

 are guava, camphor, Passiflora laurifolia, Eucalyptus in Australia, 

 fiddle-wood {Citharexylum fruticosum), kola {Cola acuminata) in St. 

 Vincent, date palm {Phoenix dactylifera) in Barbados, mango 

 {Mangifera indica), coconut {Cocos micifera), hog plum {Spondias 

 lutea), and ferns in European greenhouses. 



Corynothrips stenopterus, Williams, is a pest of cassava {Manihot 

 utilissima) and rarely of papaya {Carica papaya). The eggs are 

 embedded in the mid-rib and all stages are passed on the leaves. It 

 is fairly general throughout the West Indies. Frankliniella insularis, 

 Frank!., is found chiefly on the flowers of Leguminosae. It is 

 numerous on Erytlirina glauca, and is frequently confused with 

 H. rubrocmctus. The eggs are embedded in the petals or other 

 parts of the flower, the larvae living chiefly on the flowers and young 

 seed-pods. It occurs throughout Central America and the West 

 Indies on Lima beans {Phaseolus sp.). Cassia, Inga spp., Lantana and 

 many other food-plants. Physolhrips xanthius, Williams (yellow 

 orchid thrips) severely damages the leaves of Cattleya and other 

 orchids. It may be an introduced species and has not as yet been 

 found on wild orchids. Sedulothrips insolens, Bagn., is often seen in 

 cacao estates on the trunks of dead or dying trees, where it apparently 

 feeds on small insects and perhaps also on fungi. Trinidad is the 

 only known habitat. 



Wilson (H. F.). A New Genus and Species of Aphid (Hem., Horn.). 



— Entom. News, Philadelphia, xxx, no. 2, February 1919, 



pp. 39-40. 

 The species described in this paper is Asiphonaphis pruni, gen. 

 et sp. n., collected on choke-cherry {Prunus serotina) during June 

 and July in Wisconsin. Colonies were found at the tips of the twigs 

 in early June, but no alate specimens were found until 6th July. 

 The sexual forms, which were collected on Prunus, are readily dis- 

 tinguished from other species found on Prunus spp. owing to the 

 absence of nectaries. 



DowNES (W.), The Apple Maggot in British Columbia. — Canadian 

 Entomologist, London, Out., li, no. 1, January 1919, pp. 2-4. 



Rhagoletis pomonella (apple maggot), of the occurrence of which 

 there are only three authentic records on the west coast of British 

 Columbia, has been taken in the city of Victoria and all over the 

 Saanich Peninsula wherever its food-plant, Symphoricarpus race- 

 mosus (snowberry), grows. Berries attacked by the fly do not drop 

 to the ground, and the larvae remain in the fruit till the last vestige 

 of pulp has been eaten. Later they bore through the shrunken skin 

 and pupate among the dead leaves and humus below the bushes. 

 The fly prefers bushes growing on high and dry spots, stunted 

 bushes on hillsides generally having the heaviest infestation. The 

 variety in question is evidently an example of a biological race, 

 similar to, and perhaps identical with that infesting the blueberry. 

 It is very abundant in the Province, but is heavily parasitised by a 

 new species of Opius. 



