128 DICHONIA; THECOPHOEA; DEYOBOTA; MEGANEPHEIA. By W. Warren. 



32. Genus: Dichonia Hbn. 



Tongue present; palpi with 2 nd segment oblique, long-haired, third porrect, drooping; frons smooth, 

 rounded; antennae of (J simple, thick, lamellate; vertex and frons strongly tufted; pectus and femora hirsute; 

 dorsum with crests and lateral tufts. Larva (of the only European species) feeding on Lonicera in summer, 

 swollen in middle and attenuated at both ends, living by day extended on the inner woody branches, pupating 

 in a spun cocoon on the ground; the imago emerges in early spring. Type Dichonia areola Esp. 



areola. D. areola Esp. (= lithorhiza Bkh., operosa Hbn.) (31 f). Forewing pale grey varied with darker, 



darkest in median and marginal areas ; veins black-speckled ; a black streak from base on submedian fold, with 

 a whitish patch above it; the two lines black, approximating below median, conversely edged with white; orbi- 

 cular and reniform stigmata large, 8-shaped, pale grey, with darker centres, the orbicular projecting obliquely 

 below median and connected there with reniform; submarginal line white, serrate, followed by a row of black 

 marginal lunules; fringe deep, grey mottled with paler; hindwing pale grey, the cell spot, veins, and outer 

 suffusa. line darker: in the form suffusa Tuit the dark median area below the stigmata becomes blackish and forms with 

 the black streak from base a curved black marking. Of general distribution throughout Europe and occurring 

 in Syria and Asia Minor. The larva is dull pinkish ochreous, with a paler dorsal line and dark brown blotches on 

 dorsum on segments 7 and 8; the 11th segment is slightly humped; on Lonicera. 



33. Genus: Thecophora Led. 



Tongue present; palpi hairy in front, the terminal segment porrected from the oblique second segment; 

 frons smooth, but bearing a large tuft of hairs; antennae of $ slightly ciliated; pectus and tibiae hairy ; abdomen 

 with dorsal series of crests and long protrusible lateral tufts ; hindwing with a large oval scaleless fovea lying along 

 subcostal vein ; hind tibiae in <$ shortened, the first tarsal segment correspondingly elongated, so that the spines 

 on it can scratch the dilated end of subcostal vein in the fovea, by which means a slight sound is emitted dur- 

 ing flight. Larva feeding up in spring, pupating in a spun cocoon between leaves ; the perfect insect emerges in 

 autumn of the same year. Type Thecophora fovea Tr. 



fovea. T. fovea Tr. (31 f). Forewing dull purple-fuscous, the lines waved, blackish, conversely edged with 



whitish; claviform stigma large, black; orbicular roundish, olive brownish, edged with black; reniform large, 

 pale creamcolour, with its inner edge darkened; the outer line forms a pale ochreous patch on inner margin; 

 submarginal line pale, preceded by a bronzy olive area and followed by dull dark purple; hindwing fuscous, the 

 fovea! space of the <J pale. Found only in Hungary and Dalmatia. Larva yellowish, with reddish heartshaped 

 dorsal blotches traversed by the pale dorsal line; a similarly coloured series of lateral specks: living in May on 

 low-growing oak-bushes. 



34. Genus: Dryobota Led. 



Like Thecophora, but the $ shows no secondary sexual characters, and the antennae are armed with sessile 

 fascicles of cilia. The larva of the only species feeds on Ouercus ilex. Type Dryobota furva Esp. 



furva. D. furva Esp. (= occlusa Hbn., didymoides Dup.) (31 f). Forewing purplish fuscous, duller, less 



varied than in T. fovea; lines double, waved, filled in with paler; claviform small, blackish; orbicular and 

 reniform rufous fuscous, outlined with black, the outer 3 /4 of reniform brightly white in the $, rufous ochreous 

 in the <J; submarginal line pale rufous grey; hindwing fuscous. Found in France, Germany, Austria, Hungary, 

 and Switzerland; also in Algeria, and Asia Minor. The imago appears in November and December. — Larva 

 greenish-white: dorsal and subdorsal lines yellow, also a stripe above the feet; a lateral row of dark V-shaped 

 marks; head deep yellow, outlined in black; feeds up in May on Quercus Bex, especially the flowers. 



35. Genus: Meganephria Hbn. 



Tongue developed; palpi hairy in front; frons smooth; thorax somewhat quadrately scaled; dorsum 

 with slight basal crests; pectus and legs long-haired; forewing elongate, the outer margin oblique and slightly 

 indentate above anal angle; stigmata very large; outer line forming (generally) a conspicuous pale crescent- 

 shaped mark at inner margin. Larva flattened, with large flat head; the 11th and 12th segments humped, 

 bearing pointed tubercles; living on trees and shrubs on the stems of which it hides by day, feeding up in summer; 

 the imago emerges in autumn. Type Meganephria oxyacanthae L. 



Sect. I. Antennae bipectinate in both sexes; terminal segment of palpi longer. 



lanerri. M. tancrei Graes. Forewing grey, with darker dusting and suffusion ; the two folds tinged with brownish 



ochreous; a black streak from base below cell; lines double, the inner waved, the outer lunulate-dentate, both 

 filled in with whitish, the outer forming a white crescent on submedian fold; all 3 stigmata large, outlined with 



