THE LEPIDOPTERA OF NORTH-EAST ESSEX 117
Small White (Pieris rapae). From April 12 to September; wide-
spread and abundant.
Green-veined White (Pieris napi). From April 23 to September;
widespread and abundant.
The three preceding species were particularly abundant in
August.
Orange Tip (Euchloe cardamines). From May 16 to June; very
common and widespread.
Clouded Yellow (Colias croceus). Reported from Fingringhoe.
Hesperidae
Dingy Skipper (Erynnis tages). Reported from Colchester.
Grizzled Skipper (Pyrgus malvae). One from Frinton on May 26;
also reported from Colchester.
Small Skipper (Thymelicus sylvestris). From July 7 onwards;
common at Colchester, East Mersea, Little Clacton, Walton
and Weeley.
Essex Skipper (Thymelicus lineola). From July to August; com-
mon at Colchester, Thorpe, Walton and Weeley.
Large Skipper (Ochlodes venata). From June 23 to September;
common at Colchester, Halstead, Little Clacton, Walton
and Weeley.
Pyralidae
Aphomia sociella. From June 27 to July; four from Colchester.
Crambus pinellus. One from Colchester on July 11.
Crambus perlellus. From June 23 to July; fourteen from Col-
chester, Layer Breton and Weeley.
Crambus pratellus. From July 7 onwards; five from Colchester.
Crambus hortuellus. From June 27 to August; common at
Ardleigh, Colchester and Weeley.
Crambus geniculeus. From July to August; common at Col-
chester.
Crambus tristellus. Two from Colchester in August.
Hypsopygia glaucinalis. Two from Colchester in July and August.
Hypsopygia costalis. From June 27 to August; common at
Colchester.
Scoparia trunciolella. Three from Colchester in June and July.
Mesographe forficalis. From June 15 to August; twelve from
Colchester and Weeley.
Sylepta ruralis. Common at Colchester and Weeley in July and
August.
Eurrhypara hortulata. From June 11 to September; common at
Ardleigh, Colchester, Layer Breton, Manningtree and
Weeley.
Pyraustra nivealis. From July 10 onwards; common at Col-
chester.
Pyraustra olivalis. From June 9 onwards; common at Colchester
and Weeley.
Pyraustra nubilalis. One from Colchester on June 30.