Publ. a. IX. 1915. (JNOPFTOS. By L. B. Vroxtv. 393 



G. sordaria is a variable species, less yellow than seroiinaria, generally more brownish-tinged and 

 less strongly glossy than dilucidaria, the (^ antennal pectinations rather .shorter, hmdtibia not dilated, the 

 lines commonly with coarser dark dots or short dashes on the veins, postmedian of forewing acutely dentate 

 at 1st radial. Forewing beneath usually somewhat infuscated but never of the uniform glossy dark smoke-colour 

 of dilucidaria. — sordaria Thibg. is a rather small, m general weakly marked form, the luies more or less sordaria. 

 broken into vem-dots. It inhabits Scandinavia and Pmland. — ab. distincta Strand has the lines black and distincta. 

 uninterrupted, the postmedian rather well expressed on the underside. — ab. strandiata Fuchs is much more ttrandiata. 

 densety irrorated, the lines almost or quite effaced. — Egg oval, brown-red, with strong longitudinal and slight 

 transverse ribs, near the micropyle of more equal strength and with knots at the angles. Larva stout, grey- 

 yellowish, with not very prominently darker dorsal pattern. — mendicaria H.-Sch. (= dilucularia Frr.) (22 g). mendicaria. 

 Considerably larger (generally surpassing dilucidaria), darker both above and (especially on the forewing) beneath, 

 the markings generally as in ab. distincta. Face black. — ab. radiata Hirschke has the marginal dots pro- radiata. 

 longed into conspicuous longitudinal dashes. — Larva (probably not different from that of sordaria) similar 

 to that of seroiinaria but with longer dorsal points, darker dorsal line, etc. This race inhabits the Alps, the 

 mountains of Silesia and Hungary, etc., July. 



G. dilucidaria Schijf. (= ? myopata F.) (22 g). Generally more glossy, 'silvery whitish or very light dilucidaria. 

 grey, easily known by its white face; the almost uniform, glossy dark smoke-colour of the forewmg beneath 

 (with pale line beyond the middle) is also characteristic. Moderately variable, the band proximally to the sub- 

 terminal line often stronglj' developed. Hmdtibia of ^ dilated. — ab. epicearia Peyer is said to be rather epicearia. 

 larger, more tinged with reddish (? brownish), the subterminal dark band wantmg. Alsace. • — ab. brunnea br^mnea. 

 Vorbr. u. MiilL-Rutz is perhaps similar. ,,A duller, darker, more strongly brown form with sharper markings." 

 Switzerland. — ab. interrupta Hirschke has the median area narrow and irregularly broken, the postmedian inierrupto. 

 line placed close to the discal ring, bent along the 3rd radial vein. — Egg oval, with small, not strong hexagonal 

 cells arranged in longitudinal rows; light yellow when laid, changijig through orange to carmme. Larva short and 

 thick, distinctly carmated laterally and with small dorsal prominences on the 8th and 9th abdommals; yello- 

 wish or reddish grey, with fine, mterrupted brown Imes and light yellow lateral stripe. On low plants, hiberna- 

 ting. Flies in July and August; common and prettj' generally distributed in the mountains of Central Europe, 

 also recorded from the LTral and a variety from Issyk-kul. 



G. sproengertsi Pilng. superficially resembles a small dilucidaria but has the ^ antennal pectinations sprocnperto'. 

 of caelibaria, hindwing little more undulate than in that group, but the sexes alike. Underside with dark distal 

 border, preceded by a narrow pale band. Alpes Maritimes: St. Martin- Vesubie, in July. 



D. Distal margins almost smooth. Antenna in (J bipectinate. $ partly or 



altogether apterous {Elophos Bad.). 



G. iveni Ersch. (22 h). The (J differs from those of the other species of the section in its longer, nar- iveni. 

 rower wings, rather deeper sinus between the radials of the hindwing and longer antennal pectinations. The 

 name-type is dark grey. $ apterous, not further described. Ferghana and lli district. ■ — ab. perruptata Fuchs perruptaia. 

 has a black, proximally dentate distal stripe on both wings. — clarior Stgr. is a much lighter, more yellow- darior. 

 grey form from Samarkand. — gilvaria Stgr. is very likely a separate species, as the wings appear to be some- gilraria. 

 what broader and the pectinations somewhat longer. Straw-yellow or sand-yello-w, sprinkled rather thickly 

 with distinct dark strigulae. Central Asia, exact locality not recorded. 



G. zelleraria Frr. (22 h). (^ slenderly built, rather glossy, weakly marked, verj' easy to recognize by zelleraria. 

 the underside, which is pale with a strong though narrow dark band close to the distal margin. $ with robust 

 body and short, rounded wings, unfitted for flight but much less aborted than in most of the other species of 

 the section, beneath marked as in the ^J. Local in the higher Alps and to Herzegovina. — occidentalis Ob. occidentalis. 

 is a very pale, weakly marked western race, with the band beneath usually narrowed, sometimes quite feeble. 

 France and Asturias. — Larva stumpy, greenish grey, with white-yellow subdorsal and lateral stripes. On 

 low plants. Moth in July — August. 



G. unicoloraria Rbr. (25 1) is perhaps an extreme form of zelleraria occidentalis, which name it would vnicotora- 

 supplant. Subdiaphanous grey, the markuigs obsolete except a postmedian line, on forewing angled at 3rd '"'"• 



radial. No trace of the dark border beneath. Andalusia(?) 



G. andereggaria Lah. (22 h). Near zelleraria but rather darker grey, much mottled with whitish, the anderegg- 

 veins in the (J more strongly yellow, underside without dark marginal band, antennal pectinations somewhat "'"'«• 



longer. $ with rather smaller, narrower wmgs than zelleraria, the forewing more pointed. — ab. mauricaudamat(?-JcaM(fc. 

 Ob., from Styria, is much darker, almost uniform fuscous above and beneath. ■ — Valais, Piedmont, Styria 

 and S. France, very local and scarce, July — August. 



IV 50 



