D. aeratana (P. & M.) Res., 1900-1980. Leucanthemum vulgare. Probably wdspd and c, but formerly confused with D. plumbana and so under-recorded. VC 18. 68 Stanford-le-Hope; 78 Benfleet (SW; HCH); 70 Danbury (HCH); 88 *Eastwood (FGW); 99 Burnham-on-Crouch (SW). VC 19. 53 Newport; Rowney Wood; 63 Great Sampford; 84 Liston (AME). ALUCITIDAE A family represented in Britain by a single genus with a single species which is easily recognised since each wing is divided into six lobes. Alucita hexadactyla (Linn.) Res., (1889)-1979. Lonicera. Wdspd and erratic in numbers; in some years c. 88 *Leigh-on-Sea (Vaughan, 1889). PYRALIDAE A large family of medium-sized to large moths, some having a wingspan well over twice that of small macrolepidoptera. Many of the adults hold their antennae in a characteristic manner when at rest, slightly parted and extended loosely backwards over the abdomen; most other families tuck them out of sight or porrect them forwards from the head. The British population is divided into 11 subfamilies (Bradley & Fletcher, 1979: there were 14 in Kloet & Hincks, 1972). Nine of these are represented in Essex and, since there is considerable diversity, each will be given a separate introductory note. The family includes more migrant and adventive species than the other micro- lepidoptera. Overall, there are 199 species recorded in Britain and 132 of these are on the Essex list. The larvae of several species feed in stored products and are pests of economic importance. 131