I’uhl. 20. LX.193-:). 
STERRHA. By L. B. Trout. 
incisarioi- 
des. 
is an almost unicolorous dark form, only the subterminal (as in most of such forms) remaining pale, reisseri 
is only known from the vicinity of Puerta de Lobo, Sierra Nevada, at about 2180 m, where it flies in the latter 
part of July. 
S. cervantaria Mill. (Vol. 4, pi. 3f). The most yellowish forms seem, as already noted (Vol. 4, p. 109), cervantaria. 
fairly stable in Catalonia, so that the retention of depressaria as a subspecies is perhaps justifiable. The latter, 
however, is extremely variable in N. Africa, where the species is abundant, and occasional examples are as 
yellow as typical cervantaria. Chretien records cervantaria depressaria from St. Pons and describes its early 
stages. The name mauritanica wich, on account of defective information given by me in Vol. 4, has been 
sometimes applied to some of the N. African forms, is untenable; see Brachyglos&ina. — montana Wehrli (5i) montana. 
is a larger, darker mountain race, the Aq sometimes confusingly similar to eburnata ab. obscura, while the 
largest $$ can greatly resemble typicata Guen (6h). Fairly common in the Sierra Nevada at 1500 to 1600 m 
in early July. 
S. okbaria Chret. (5 i). By the kindness of M. Lhomme, I have been able to study some of Chretien's okbaria. 
originals and to provide a figure of the There is little to add to the description, except that the tongue is 
well developed, the hindtibia provided with hair-pencil, the whole structure in fact quite as in cervantaria. 
Although the pale colour gives it a distinctive appearance, some Algerian series (particularly from Bou Saada) 
show gradations from okbaria to normal depressaria. Is it really a separate species ? 
S. incisaria Stgr. An abundant and very variable species in North Africa, at least from Morocco to incisaria. 
Tunis. A somewhat smoother-looking, greyer form, with the incision of the hindwing somewhat shallower, 
the collar perhaps paler, was bred by Andreas from S. Tunis and might have been expected to prove a sepa¬ 
rate species, but the genitalia have shown no difference. On the other hand a $ from Biskra in the British 
Museum collection, has the valves notably longer than in the typical forms and perhaps indicates that there 
is still some mixture passing under the collective name. —■ ab. ( ?) incisarioides Welirli (5 k) is a form or closely 
related species, said to be “larger, robuster, more strongly and in the distal area more copiously marked.'’ Ham- 
mam Rirha, thus well with in the range of typical incisaria. I have seen similar aberrations of the variable in¬ 
cisaria from that locality. I gather from Dr. Wehrli that it was not intended as a comprehensive name for 
the Mauretanien race in general, hence Reisser is mistaken in suppressing to it the following. — ab. loc. (?) 
pulverulenta Reisser (= incisaria Prout in Seitz, Vol. 4, p. 109, pi. 3 g) is founded on the Philippeville forms pulverulen- 
(excluding presumably the ab. centropunctata) and is said to differ from the Portuguese name-type in being ta - 
more ochreous-toned, with copious grey irroration (in i. incisaria pale yellowish-grey with browner irroration) 
and to have the markings inclined to be more irregular in position than in the other incisaria forms, more recalling 
those of calunetaria. — ab. centropunctata Andreas (6 i), bred from Philippeville with more typical pulverulenta, centropunc- 
is whitish and very weakly marked as far as the subterminal maculation, the isolated cell-dots standing out 
conspicuously. — praecisa Reisser, from the Riff Mountains, looks superficially like a different species, but the praecisa. 
genitalia show no difference. Snow-white, only in a few A A with a slight creamy tinge, irroration reduced to 
a minimum, median shade usually very strong (in an ab., however, wanting), postmedian line complete, ter¬ 
minal dashes always well developed. The biology has been carefully described by Reisser, who bred it in con¬ 
siderable numbers. — albarracina Reisser is small (length of a forewing 8—10 mm), the incision of the hindwing albarracina. 
light, the colour cleaner white-grey, without yellowish tinge, more suggestive of seriata (Vol. 4,pi. 4d). Albarracin, 
a few in July. 
S. mareotica Draudt (Vol. 4, pi. 3 g, as mareotmsis). The larva apparently varies. After the first moult mareotica. 
brownish yellow, with red, subsequently black, spots on segments 3—7 (Andres, Bull. Soc. Ent. Egypte, 
Vol. 3, p. 97). So far as is yet known, the range of this species is confined to a few localities in Lower Egypt. 
S. albitorquata Pung. (Vol. 4, pi. 3f) seems to be well distributed in the Mediterranean countries, albitorqua- 
Italy, Dalmatia and Malta have been added to its known range. Moreover, a Sterrha from Albarracin, which 
was first recorded as incisaria, turns out to have the genitalia of albitorquata and is probably a form of, if not 
synonymous with, this rather variable species, obliquaria Trti. (= napoleon Prout), on the other hand, has 
no connection with albitorquata and should rather be placed with the calunetaria group (see below). 
S. maurusia Trti. (= maurusi B.-Haas) (6 i) somewhat recalls subsericeata in its strongly silky gloss 
and was, indeed, originally /referred to that species, though with doubt. Actually, however, its affinities are 
with sodaliaria, as is suggested in the published description, or rather (in that the collar is white and the hind- 
tarsus of the extremely short) with albitorquata. More glossy and weakly marked than the latter, postmedian 
line (on forewing often obsolescent) not punctiform; the antennal joints of the $ seem to project more, ciliation 
somewhat longer. Common at Berea (Cyrenaica), bred by Kruger in March and Apiil. Larva not fully describ¬ 
ed; said to be short and thick, tapering anteriorly, sluggish in its movements; brownish, somewhat resembling 
those of albitorquata , cossurata, etc. 
S. camparia H.-S. (Vol. 4, pi. 4 c) Count Turati has recently recorded a specimen from Cyrenaica 
(Wady Cuf). — europaea Wehrli. Having studied material from Marascli, Beyrout, etc., which about agrees in 
Supplementary Volume 4 8 
maurusia. 
camparia. 
europaea. 
