Synanthedon andrenaeformis (Laspeyres, 1801)
52.0100 (B&F: 378)
Synanthedon anthraciniformis (Esper, 1800)
Resident. Residents are rarely seen in the wild but the elusive larva is sometimes fairly common on the chalk. Extremely local, distinctly episodic in numbers, and restricted to a thin band of colonies situated on the northern foot of the downs between Lewes and Arundel. Single-brooded, flying mainly from early June to early July. Larvae feed on the wood inside the stems of wayfaring-tree on the alkaline downs and in guelder-rose on acid heaths. (Pratt, 2011).