70 Grange Farm, Chigwell: an important site for arboreal Coleoptera .... Species Ancient woodland National status indicator status (Hyman 1992) (Harding & Rose 1986) Host tree(s) elm oak Lucanidae Sinodendron cylindricum (L.) AW3 Scirtidae Prionocyphon serraticornis (Muller) Nb AW2 Buprestidae Agrilus laticornis (Illiger) Nb Dermestidae Magatoma undata (L.) Nb Anobiidae Anobium inexspectatum Lohse Nb Dorcatoma chrysomela Sturm AW2 Nitidulidae Epuraea longula Erichson Nb Tenebrionidae Prionychus ater (F.) Nb AW Scaphidema metallicum (F.) Nb Salpingidae Lissodema 4-punctatum (Marsh.) Nb Melandryidae Orchesia minor Walker Nb Abdera biflexuosa Curtis Nb AW3 A. quadrifasciata (Curtis) Na AW1 Conopalpus testacea (Olivier) Nb AW3 Phloiotrya vaudourei Mulsant Nb AW2 Scraptidae Scraptia testacea Allen RDB3 AW1 Mordellidae Mordellistena neuwaldeggiana (Panz.) RDBK Aderidae Aderus populneus (Creuzer) Nb A. oculatus (Paykull) Nb AW3 Cerambycidae Gracilia minuta (F.) RDB2 Attelabidae Rhynchites cavifrons Gyll. Nb Curculionidae Anthonomus ulmi (Degeer) Nb Coeliodes ruber (Marsham) Nb Magdalis cerasi (L.) Nb elm Ivy oak oak oak Elder, oak oak, Field Maple oak oak oak oak- oak oak Field Maple oak oak Hawthorn oak elm oak References ALEXANDER, K.N.A (1988) The development of an index of ecological continuity for deadwood associated beetles. In: Welch, R.C. (ed.) Insect indicators of ancient woodland. Antenna 12. FOWLES, A.R (1997) The saproxylic quality index: an evaluation of dead wood habitats base on rarity scores. The Coleopterist 6: 61-66. HARDING, P.T. & ROSE, F. (1986) Pasture Woodlands in Lowland Britain. ITE. HYMAN, RS. (revised by Parsons, M.S.) (1992)^4 Review of the Scarce and Threatened Coleoptera of Great Britain, Part 1. JNCC, Peterborough. Essex Naturalist (New Series) 17 (2000)