a ae ee ee “ . . = 
TISCHERIA, 263 
Common at Sanderstead, and in many other localities, in June ; 
the perfect insects appear very sluggish. The larva mines the 
upper part of the leaves of the Dactylis glomerata in May. 
Genus XIV. TISCHERIA. 
Tiscuenta, Zell. Isis, 1839, p. 219; Dup. Cat. Wachista p., Treit. ; 
Dup. L. F.  Aphelosetia p., Step. 
Capilli occipitales suberecti ; frontales depressi. Palpi labiales breves, 
filiformes, penduli. Haustellum mediocre, squamatum. Antenne 
alis anterioribus breviores, ¢ piloso-ciliate, 9 nude, articulo basali 
dentem pilosum gerente. Ale longe ciliate, anteriores subcaudu- 
late, posteriores lanceolate.  Tibie postice pilose. Ale ante- 
riores: cellula discoidalis postice aperta, vena subcostalis in basi 
longissime obsoleta, ramos quinque in costam, mediana tres in 
marginem posticum emittit, vena subdorsalis simplex ; posteriores : 
ven simplices. 
Head behind with rather erect hairs, in front smooth. Labial palpi 
short, filiform, drooping. ‘Tongue of moderate length, clothed with 
scales. Antenne considerably shorter than the anterior wings, in the 
& with pilose ciliations, in the 9 simple, the basal joint furnished 
with a projecting tuft of hair. Wings with long cilia, the anterior 
pointed, hardly caudulate, the posterior lanceolate. Hinder tibie 
hairy. In the anterior wings the discoidal cell is not closed, the sub- 
costal vein is obsolete for a considerable length towards the base ; it 
sends five veins to the costa, the median emits three to the hinder 
margin, the subdorsal vein is simple; in the posterior wings the 
veins are simple. 
A rather singular genus, of which only two species have oc- 
curred in this country (two or three others are known on the 
continent) ; the perfect insects sit with the head slightly raised, 
the tips of the wings firmly pressed against the substance on 
which the insect is sitting. ‘The larve are leaf-miners, and re- 
markable for their extremely undeveloped legs, which require to 
be seen by the aid of a microscope; the habits of our two species 
exhibit considerable differences. 
1. complanella, Hiib. Tin. 428 (1816); Treit.; Dup.; Zell.; 
Ratz. F. I. ii. pl. xii. f. 4; Sta.—rufipennelia, Step.—Miillerelia, Vill. ? 
—rufipennis, Haw. ?—fulvescens, Step.? Alis anticis luteis, margine pos- 
tico late, costaque angustissime fuscescentibus. Exp. al. 34-6 lin. 
Head, face, and palpi yellowish. Antenne greyish-yellow. Ante- 
rior wings bright yellowish, towards the hinder margin and along the 
costa fuscescent ; cilia yellowish at the apex, grey at the anal angle. 
Posterior wings grey, with yellowish-grey cilia. 
