473 



enemies of tlie Coccid pests of citrus, Cryptolaemus tnontrouzieri and 

 Novius {Macronovius) cardinalis. The climate of the south of France 

 seems very favourable to H. convergens, as examples from there are 

 usually larger than those from North America. 



Priesner (H.). Ueber albanische Thysanopteren. [On Albanian 

 Thysanoptera.] — Wiener Ent. Zeiig., Vienna, xxxix, no. 1-4, 

 30th March 1922, pp. 105-107. [Received 20th July 1922.] 



A new species, provisionally placed in the genus Trichothrips, is 

 here described as T. inferniis from a female taken at Mamuras, Albania. 



Some corrections in the nomenclature of the author's paper on 

 Albanian Thysanoptera [R.A.E., A, ix, 588] are given. 



Rambousek (F.). Katastrofalnim Rozsireni Zavijece Repov6ho 



{Phlyctacnodes sticlicalis, It.). [On the disastrous Invasion by 

 Loxostege sticlicalis, L.] — Zprdva Vyzhmmeho ustavu 

 cukrovarnickeho [Bull. Sugar Manuf. Expt. Inst.], Prague 

 Ent. prirucky, x, 1922, 26 pp., 14 figs. [With a Summary in 

 French.] 



An account is given of the outbreak of Loxostege {Phlyctaenodcs) 

 sticticalis, L., in Czecho-Slovakia [R.A.E., A, x, 342J. 



In addition to the parasites already mentioned [R.A.E., A, x, 343], 

 the following Hymenoptcra are recorded : Apanteles sp. (near ruficrus, 

 Hal.), Phytodietits segmentator, Grav., and Pimpla examinator, F. 



Jackson (D. J.). Bionomics oJE Weevils of the Genus Sitona injurious 

 to Leguminous Crops in Britain. Part ii. Sitona hispidula, F., 

 S. snlcifrons, Thun., and S. crinita, Herbst. — Ann. App. Biol., 

 Cambridge, ix, no. 2, June 1922, pp. 93-115, 1 plate, 5 figs. 



Sitona hispidula, F., the stages of which are described, is widely 

 distributed throughout Europe and America, and has also been recorded 

 from Western Siberia. In the British Isles it is a common pest of all 

 species of clover {Trifolium), lucerne {Medicago sativa) and medick 

 (M. liipulina), and is occasionally found on peas. In Maryland, it has 

 been reported as attacking Lima beans. The adults begin to feed at 

 the edge of the clover leaves and, bite out irregular notches. The larvae 

 bore deeply into the main root, and frequently damage it just below 

 the crown, so that the shoot just above the damaged area dies. The 

 greatest damage is done in June and July, when the larvae are most 

 abundant. There is one generation in a year, the adults living about 

 12 months. They begin to appear from July to September and 

 ovipcjsit from about 6 weeks later, continuing to lay eggs occasionally 

 during the winter and resuming vigorously in the spring. About the 

 end of June oviposition ceased, and in July most of the weevils died. 

 Eggs laid in the autumn did not hatch until the following spring, 

 otherwise the incubation period was about 25 days. Larvae hatching 

 from eggs laid in September and October required 15-16 weeks to 

 reach maturity ; those from eggs laid from mid- April to 21st July 

 required only about 11 weeks. During fine weather in September and 

 October the beetles are very active and can be swept in numbers from 

 clover or lucerne. In America the hfe-cycle is much shorter. 



In the course of these investigations, the Braconids, Perilitiis rutilus, 

 Nees, P. aethiops, Nees, and Pygostolus falcatus, Nees, have been bred 



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