. British journal of entomology and natural history. Natural history; Entomology. 174 BR. J. ENT. NAT. HIST., 1: 1988 the diversity of species to the environment around the trap site. This index of diversity, known as the alpha value, is normally fairly constant but alters when major environmental changes occur. The speaker illustrated this by discussing three trap sites at Rothamsted, comparing current results with data collected at identical sites in the 1930s and 40s. 24 March 1988 The Vice President, Prof. J. A. Owen in the Chair. Exhibits Mr M. K. Henderson exhibited a rearing chamber for
. British journal of entomology and natural history. Natural history; Entomology. 174 BR. J. ENT. NAT. HIST., 1: 1988 the diversity of species to the environment around the trap site. This index of diversity, known as the alpha value, is normally fairly constant but alters when major environmental changes occur. The speaker illustrated this by discussing three trap sites at Rothamsted, comparing current results with data collected at identical sites in the 1930s and 40s. 24 March 1988 The Vice President, Prof. J. A. Owen in the Chair. Exhibits Mr M. K. Henderson exhibited a rearing chamber for investigating the subsocial behaviour of burying beetles and their larvae. The device was shaped like a letter T, with two sides of the upright being made of clear perspex to enable observations to be made of the beetles' Fig. 'Cut-away' diagram of the rearing chamber exhibited by Mr M. K. Henderson. The box is half-filled with earth, and a dead bird or animal placed on top. The two sides of the upright of the T' shape are made of perspex to allow the subterranean activities of the burying beetles and their larvae to be observed. Mr R. A. Jones showed a single specimen of Metatropis rufescens () (Hempiptera: Berytinidae) swept from its foodplant, Enchanter's Nightshade (Circaea lutetiana L.) at the edge of a ride through woodland at Scaynes Hill, near Haywards Heath, Sussex, on It was first noted from a single specimen collected by Wollaston in the 1840s from Pangbourne, and at the turn of the century was a very rare bug known only from three other locaHties in Hampshire. Of late it has become much more common and widespread, now being known from most of southern England. Dr J. MuGGLETON displayed some books on French insects in connection with his Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectl
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