Centipedes and Millipedes These two groups, the Chilopoda and Diplopoda, are often treated together, collectively known as the Myriapoda. They are. however, not closely related. Centipedes are a very active predatory group of invertebrates whilst millipedes are herbivorous. There are structural differences between the two groups. Millipedes have what appears to be two pairs of legs per segment, whilst centipedes have only one. Both groups tend to be found in moist situations in leaf litter, under logs, under bark and sometimes under discarded debris on the margins of the Forest. I have only found Lithobius melanops once in an old decaying Grey Squirrel drey in an Oak tree in Lords Bushes. The group has been little studied in the Forest and with the exception of two species all the records below are from Lords Bushes. The exceptions are Glomeris marginata recorded from Warren Hill and the Lower Forest and Polyxenus lagurus which is an unlocated Forest record (EN XXII p.254) made in about 1930. Lithobius forficatus, of all the species listed below, is the best known and, apart from being found in Lords Bushes, appears to be widespread in the Forest. The records below, with the exception of P. lagurus, were made in the years 1976-85. Reference Hanson. M. W. (1983) Lords Bushes- the history and ecology of an Epping Forest woodland. Essex Naturalist (N.S.) No. 7 p. 48. Chilopoda Cryptops hortensis (Leachi Haplophilus subterraneus (Shaw) Lithobius forficatus (L.) melanops (Newport) Necrophloeophagus longicornis (Leachi Diplopoda Blaniulus guttulatus (Bosc) Cylindroiulus punctatus (Leachi Glomeris marginata (Villers) Ophyiulus pilosus (Newport) Polydesmus angustatus (Latzel) Polyxenus lagurus (L.) Proteroiulus discus (Am Stein) 107