IGO MACrvUTHYJ>AOIA. By Dr. K. Gui nbekg. 



davidU. L. davidis St(jr. (25 f). The typical form is light cream-colour, yellowish white, with sharply marked, 



(huk, (lint ally usually distinctly dentate band on the forewing; the brown band rather broader, sometimes in- 

 distinct or even absent. On the forewing there is frequently a short brown subbasal band. Underside likewise 

 pale, with broader dark bands. The figure (25 f) represents a dark form in which only the outer area of the 

 forewing Jias the normal creamy colour. Palestine. 



mmi. L. Josua SUjr. (26 a). The specimen here figured doubtless belongs to this species, but the colour of its 



forewing is very light. In true josua the forewing of the (^ is brown densely dusted \\\\\\ j'ellow bearing a light 

 basal spot, which is usually ])roduced into 2 sharp points; the light border of the median band is distinct and 

 continued on to the hiudwing as a narrow prominent transverse band. In the $ the forewing is even more 

 densely dusted with light scales than in the ^ and the hindwing also is frequently paler. Palestine. Early stages 

 vauchcrl. not known. — The species is represented in Morocco by a larger and darker race, vaucheri Blach.; the ^ is dark 

 reddish brown irrorated with small yellow scales, all the markings, i. e. the basal and discal spots and the trans- 

 verse bands, are prominent and nearly ochreous ; the $ is lighter in colour and more variable, the light markings 

 being somewhat diffuse. 



d. decolor ata-group. 



(Icculnnilii. L, decolorata King (2(5 a) is nearly uniformly pale yellowish grey, without pale discal spot. Palestine 



and Egypt. 



(irisea. L. grisea spec. nov. (26 a). An entirely unicolorous species, which is light-grey with an ill-defined white 



discal spot in the forewing. The ground-colour is similai- to that of palaestinensis Stgr., but there is no trace 

 whatever of dark markings. Palestine. 



(Mini. L. datini 3Iab. (26 b) is uniformly dirty brownish grey. Tunisia. 



staudingeri. L. staudingeri Baker (26 b). Yellowish brown or more greyish brown. 5 with remnants of wings, 



dark greyish brown or reddish brown. Algeria (Lambessa, Biski'a). Larva similar to that of serrula, 

 frons with a triangular sulphur-yellow spot, which is separated by a deep black border from the slaty blue sides 

 of the head. Characteristic are subdorsal, horizontal, pointed pencils of hair of which there are 5 on each side 

 of every segment, the pencils converging at their tips. The intersegmental incisions slaty blue marked with 

 white. In June full-grown on low plants of various kinds, such as species of Artemisia, Genista, Trifolium, and 

 also on young bushes of Quercus ilex. According to Dr. Seitz's observation the larva remains in daytime on 

 the ground or more inside the bunches of the food-plant, appears at 5 o'clock p. m. and can be obtained in num- 

 bers shortly before dusk sets in. It is difficult to breed, and pupates on the underside of stones, for which reason 

 it is advisable to place some stones into the cage. As the larva does not easily take to a new kind of food, it is 

 best to feed it up on the species of plant on which it was found. As a rule it eats but little and grows slowly, 

 and a large percentage die in captivity. Pupation in a cocoon which is similar to that of trifolii, but sometimes 

 entirely white. The moths are on the wing in August and September. In Central and Southern Algeria (Lam- 

 bessa, Batna, Biskra), locally very common. 



7. Genus: Haerotli^'laieia Raynh. 



Closely allied to Lasiocampa Schrnnk. Eyes evenly hairy. End-segment of palpi shorter than in Lnsio- 

 cdiupa and indistinctly separated. Veins 6 and 7 of hindwing always on a distinct stalk, basal cellule 

 smaller and just reaching the middle of the cell, sending off two strong, simple or furcate, accessory veins to 

 the costal margin. Antennae of ,^ M'ith long pectinations, of $ with very short teeth. Frons and anterior tibia 

 unarmed, as in Lasiocampa quercus. Wings as in Lasiocampa, broad, rounded, entire; forewing with 2 light trans- 

 verse bands. Represented in the Palearetic Region only by one species, wliich however is widely distributed. 



riibi. M. rubi L. (26 c). ^ paler or darker brown, varying from rather light rust-brown to deep red-brown; 



forcAving with 2 whitish discal bands which converge behind, are either narrow, sharply marked and linear, 

 or broader and more diffuse, and either stand rather far apart or approach each other strongly or even touch 

 one another. On the distal half a submarginal, broader or narrower, often indistinct or even absent, greyish 

 white suffusion which is well defined and strongly dentate only on the outer side. Fringes whitish. LTnderside 

 entirely unicolorous. or at the most the outer band vestigial. $ larger, greyish brown, forcAx-iug strongly 

 suffused with grejash white; markings as in the ^. Throughout Europe (with the exception of Sicily and 

 Greece) as far as Central Asia. — The variability is considerable in both .sexes in size as well as colour and 

 markings. The (J of name-typical rubi L. (26c) is dark reddish brown, the $ grejish brown \vith a slight 

 reddish tone, the whitish transverse bands are rather far apart. The different colour-varieties of ^J and 



