•234 PHEAGMITIPHILA; RHIZEDKA. By W. Warren. 



dorsal lines white; spiracular line double, white; spiracles white with purple rings; head pale yellow brown; 

 feeds on birch and alder. 

 abltda. E. abluta Hbn. (471). Forewing glossy pale ochreous, faintly grey dusted; inner and outer lines 



pale olive brown, conversely edged with pale ochreous; an obscurely darker bent median shade; stigmata 

 hardly traceable, the lower lobe of the reniform marked with fuscous; hindwing white suffused with pale 



ijlaucnla. greyish rufous, with traces of a dark outer line and submarginal shade; — in glaucula Guen. (471) the 

 whole forewing is suffused with olive grey, the two lines and the outlines of the stigmata standing out 



armaria, clear and pale; — the form arenaria Battel, from the S.Ural district, is said to be smaller, with yellowish, 

 imbuta. or yellowish-brown forewing and very pale yellowish hindwing; — imbuta Bsd. (49 a) is yellow instead of 



fasciata. being pale ochreous as in the type of abluta; — ab. fasciata ab. nov. (49 a) is also yellowish, slightly grey- 

 tinged, but with the space between median and outer lines darker grey, forming a curved band, the two 

 rufula. stigmata standing out pale yellow, large and subconfluent; rufula Stgr. (49 a) corresponds to glaucula Guen., 

 the ground colour being pale brickred instead of olive grey. The type form from Austria, Hungary, and 

 Uralsk; glaucula from Hungary only; all the others from Sarepta and the Ural Mts.; it is doubtful if 

 arenaria is distinct from abluta. Larva green, with narrow darker dorsal and subdorsal lines; spiracles 

 black; thoracic and anal plates yellow; the head browner; feeding on poplars, especially on Populus nigra. 



108. Genus: Pliragniitipliila Hmps. 



Tongue aborted, small; irons with a subquaclrate corneous plate in middle; palpi porrect, short, 

 rough haired below, the third segment short and smooth; thorax with very slight crests; antennae of <$ 

 variable; forewing with apex rounded, the termen obliquely curved; veins 6, 7 of hindwing stalked. Larva 

 elongate, feeding in the stems and hearts of Arundo, Carex, Typha, etc., through the summer, pupating 

 in situ; the imago emerging in autumn. Type P. nexa Hbn. 



Sect. I. Antennae of $ with tuberculate fascicles of cilia. 

 nexa. P. nexa Hbn. (49 a). Forewing olive brown with a rufous tinge, especially along the two folds; 



inner and outer lines pale; the inner oblique outwards and bent on submedian fold; the outer, near 

 termen, slightly sinuous, and followed by a line of black vein-dashes; no submarginal line; the termen 

 paler, pinkish grey; the marginal line black; the fringe reddish; stigmata white; the orbicular small, a 

 flattened oval; the reniform large, lunulate, with a grey linear centre, its upper end pointed externally, 

 its lower produced at right angles inwards along median vein to below orbicular; hindwing fuscous, paler 

 in basal half, with traces of a dark line beyond middle; fringe reddish. Occurs only in Sweden, North 

 France, North Germany, and Saxony. Larva dirty white, with two faint reddish subdorsal lines and black 

 tubercles; spiracles black; head and plates yellow, with brown markings; feeds in stems of Glyceria and 

 Carex riparia, close above the root, from autumn to the following summer, then ascends and changes to 

 pupa in a slightly spun cocoon. 



Sect. II. Antennae of ^ serrate, with sessile fascicles of cilia. 



lyphae. P. typhae Thnbg. (= arundinis F.) (49 a). Forewing greyish ochreous in the $, more brownish in 



the (J, sprinkled with darker, but always paler along the course of the two folds; the veins all pale; 

 the two stigmata interrujDted by the pale streak in cell; the reniform plainer, its lower end produced 

 basewards along median vein and marked by lines of brown scales; the inner and outer lines marked by 

 series of black spots on veins; the submarginal line preceded by black clashes between the veins; a row 

 of black marginal lunules; hindwing greyish luteous, with dark cellspot and cloudy submarginal border; 



nervosa tne a ^- fraterna Tr. (49 b) has the forewing dark brown in both sexes; ab. nervosa Esp., represents an 

 insect intermediate between fraterna and the type form. In North and Central Europe, including Britain, 

 Spain, N. Italy, Central and S. Bussia; also at Hi and Issyk-kul, Tibet. Larva dirty white or flesh 

 colour, with three pale lines along the dorsum; spiracles black; head and plates black brown; feeding in 

 the stems and fleshy lower parts of the leaves of Typha latifolia; pupating in situ, with the head upwards. 



Sect. III. Antennae of <$ subserrate, ciliated. 

 turpis. P. turpis Btlr. (49 b). Forewing dirty pinkish ochreous dusted with grey; a diffuse grey shade 



from base below median vein; the intervals between the veins often dark in the <$; stigmata of the ground 

 colour, very indefinite, sometimes with a black mark between them; outer line represented by spots on 

 veins; submarginal sometimes by an oblique row of dark blotches in the intervals; $ always much paler 

 than the $ ; hindwing paler. Japan. 



109. Genus: Rliizedra gen. nov. 

 Tongue present; frons smooth, tufted with hair; palpi porrect; thorax and abdomen stout, without 

 crests; antennae of <$ with strong sessile fascicles of cilia; forewing elongate with prominent apex and 

 oblique termen. Larva living deep down in the roots of reed through the summer (whence one of the names 

 of the type species), the imago appearing in late autumn. Type B. lutosa Hbn. 



