. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 9: 1996 145 A small, rather convex, donaciine which has an elytral shape approaching that of the genus Plateumaris. It is found, often in large numbers, feeding on the leaves of its foodplant, the reed meadow-grass Glyceria maxima (Hartm.), during May, June, July and early August. Lakes, ponds, canals and dykes supporting an abundant growth of Glyceria are favoured. The dorsal surface is of a shiny copper colour, often with a greenish reflection on the lateral aspects of the elytra, while
. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 9: 1996 145 A small, rather convex, donaciine which has an elytral shape approaching that of the genus Plateumaris. It is found, often in large numbers, feeding on the leaves of its foodplant, the reed meadow-grass Glyceria maxima (Hartm.), during May, June, July and early August. Lakes, ponds, canals and dykes supporting an abundant growth of Glyceria are favoured. The dorsal surface is of a shiny copper colour, often with a greenish reflection on the lateral aspects of the elytra, while the head, legs, antennae and underparts, being covered with short white pubescence, appear light grey in colour. The presence of a deep midline pit or sulcus on the dorsal surface of the posterior pronotum is an important point in identification, unique to this donaciine. A locally common species with post-1970 records for and England, E. and W. Midlands, East Anglia and all parts of Southern England, but it is apparently unknown in Scotland. 11. Donacia semicuprea Panzer mm. VICE-COUNTY DISTRIBUTION. PRE 1970 (=32): 6; 7; 8; 9; 11; 13; 14; 15; 16; 17; 11; 19; 20; 21; 22; 23; 24; 26; 27; 29; 30; 31; 33; 34; 37; 38; 41; 53; 61; 62; 63; 64. 1970 ONWARDS (=311: 5; 6; 8; 11.; 12; 13; 14; 15; 16; 17; 11; 20; 21; 22; 23; 25; 27; 28; 29; 30; 31; 32; 34; 38; 39; 53; 55; 56; 57; 61; 63. 1970 ONWARDS 12. Donacia impressa Paykull, 1799 Status: Notable A (Latin: impressio, distinct impression; probably referring to two deep elytral impressions). L = mm; Plate II, Figure 12. One of the smaller donaciines, this species is very local but may be seen in large numbers, especially when feeding on the flowers of the tussock sedge Carex paniculata L. and lesser pond sedge Carex acutiformis Ehrh. during May and June, and also the flowers of bulrush Scirpus lacustris L. in August and September. The adult beetles have been recorded from April until November. D. impressa shows many s
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