OREOPSYCHE. By Dr. E. Wehrli. 
215 
tier, Bois de Veyrier and has also been frequently bred from the casings that have been found. It occurs 
end of May, early June. The sacs are found on Lotus and Artemisia campestris. 
H. zabefh Le Cerf, from Oulmes, Morocco, in April, has for the main part black hairing on upper and zabeth. 
undersides of thorax with very little admixture of white. The black hairy scalings of wings are denser, deeply 
shading over the outer half, costa and margin of forewings. Hindwings more widely black; fringes, especially 
of hindwings are longer and black to inner angle. Wing expanse 18 mm. Described from 2 
9. Genus: Oreopsyche Spr. 
0. tabanivicinella Brd. (Vol. 2,p. 359, pi. 55 c) is found in the Valais, in the main valley of the Simplon, tabanivici- 
in the Laquin valley, Saastal, Glacier de Trient and also in the Pyrenees. — The larvae are full fed in June; 
the moth emerges in July, later than in South France (May and June). 
0. biroi Rbl. (Vol. 2, p. 359). According to Schawerda, this species also occurs in Herzegowina, at biroi. 
the top of the Orjen (altitude 2000 m) and on the Trebevic in Bosnia. He describes the sac as being of the 
size of that Ph. graslinella Bsd., narrower, rather more loosely built and also more loosely covered with 
particles. 
O. leschenaulti Stgr. colossa A. B.-H. (14 h [<$ type]) from North Portugal is distinguishable by its colossa. 
larger size, 18—20 mm as against 15—17 mm expanse. Further the colour of all wings and the body is 
slightly purer white, which is nothing like the dark black-grey colour of the var. nigricans Stgr. (14 h [cotype] nigricans. 
and Vol. 2, p. 360, pi. 55 d) from Castile, with which the only resemblance is the almost unicolourous black 
antennae. Also the sac is much larger 24 mm against 17—20 mm on the name form. In the 6 includ¬ 
ing the original one, the wings are much more glossy, the shape of the forewings is different, the apex 
being much more acute, so that colossa would rather appear to be a separate species. 
0. desertorum Trti. (14 h type]). Nominated from a A that is now before me. The specimen was desertorum. 
captured in nature, has flown and is slightly damaged on the right wing. However it certainly shows certain 
specific differences from 0. pyrenaella H.-Schaff. (Vol. 2, p. 359, pi. 55 c *) and kahri Led. (Vol. 2, p. 359, pi. 
55 c) with which it is doubtless closely related. Forewings 8 mm. The antennae are bipectinated with fascicles 
to their extremity, but they are shorter than in the species referred to, the long pectinations are stouter 
and shorter, densely ciliate, blackish, especially at the base they are adorned with white hairy scales. The 
black-brown body is frailer than in the related species, with knotty hairs, grey fascicles of hairs on the top 
of head and laterally on the thorax. Easily distinguishable from allied species by the different shape of fore¬ 
wings, which are transparent, faintly brownish black with more acute apex and straighter margin. The cell 
has a more rounded outer wall than the others, it is not so large as shown on Turati’s illustration 4. There 
are 9 marginal nervules. The somewhat folded hindwing appears to be narrower, the general outline being 
not definitely clear. Early stages unknown. Ain-Mara, Cyrenaica. 
0. angustella H.-Schdff. (Vol. 2, p. 360) (14 h). bicolorella Bsd. (Vol. 2, p. 360, pi. 55 b) (= mon- angustella. 
caunella Chapm., sec. Heylaert’s certissime, Ann. Soc. Beige., L., 1906, p. 97) occurs in the Pyrenees and bicolorella . 
neighbouring districts of Spain, where it is occasionally very common locally, flying in the morning sunshine 
between 8 and 10 a. m. in June/July in altitudes of 1500—1800 m and around plants of Genista purgans. 
The form varies considerably in colouration and is connected to angustella by transitions. The original specimen, 
which is neither perfect nor well preserved emanates from Spain. — So also does nioncaunella (15 a) which moncaunel 
differs from bicolorella, according to Chapman, by its larger size, length of wings being 10 mm, by the 
more intensive yellow-red tip of abdomen, which contrasts brightly with the black anal tuft and the greatei 
constancy of the colouration, in comparison to bicolorella, which varies more and is not so extensively coloured 
reddish. Hr the original description comparison was only made with muscella. It was caught between 14th 
and 24th July at an altitude of 1500—2000 m on the Sierra de Moncayo on the boundary of Castile, Ara¬ 
gon and Navarra, scarcely 100 km west of the Pyrenees in Spain. 
0. plumifera valesiella Mill. (Vol. 2, p. 360) (14 h). According to Vorbrodt the sacs have been found to valesiella. 
an altitude of 3200 m. It flies from June to beginning of August in the early morning in the sunshine in 
Canton Valais, Bern, Switzerland, but only in alternate years. Stager describes the ova as pale yellow, 
no definite structure, smooth, roundish polyedrous, singly, as well as, as a whole embedded in the wool 
of the abdomen of $, in each sac abt. 80 ova. The larvae, the eyes of which can be observed as minute 
dots in the ova when about to issue forth, feed on sunny, dry, rather barren mountain meadows, mainly on 
thyme, but also on many other xerophagous low plants, sometimes occurring in immense numbeis. The 
complete metamorphosis takes 2 years. For further details as to the biology see Stager, Zeitschiift f. viss. 
Insektenbiologie, 1924, p. 131, 163, 181, 216; valesiella is distributed widely in mountainous districts at from 
1200 m altitude. I have also received same from the central Pyrenees, the Urals and captured same in 
quantities in the Vosges at abt. 1300 m altitude. 
*) In Vol. 2, pi. 55 c, the name is erroneously printed as pyreneella . 
