GYRTONA. By M. Gaede. 
SARROTHRIPINAE. General Topics by Dr. A. Seitz. 
383 
G. polionota limps. (36 b). Greyish brown. Just as indistinctly marked as plumbisparsa . The lines ioolionota. 
scarcely discernible, the median line likewise double. The hindwing is also somewhat lighter than in polionota, 
scantily scaled at the base. 26 mm. 1 $ from Woodlark I. 
G. proximalis Wkr. (= ferrimissalis Wkr., costella Wkr.). Forewing dark greyish brown with a silvery proximalis. 
gloss. Interior line double, filled with white, white also before it, with the usual black scales outside, intro- 
angular at vein 1. Median line black, finely undulated. Reniform macula finely edged with black. Exterior 
line indistinct, threefold, filled with white above the inner margin. Submarginal line double, dark. Hindwing 
dark brown. The forewing may also be without the white colouring at the interior line, but instead it may 
have a dark brown spot behind it from the cell to the inner margin: — brunneomaculata Strd. — On the other brunneoma- 
hand, both may be absent: demaculata Strd. 20—29 mm. Malacca, Borneo. demacuMa"' 
G. atribasalis Hmps. (36 b). Forewing reddish brown, dark brown at the base except at the inner atribasdlis. 
margin as far as the double interior line which is ex curved as far as below the cell. The blackish median line 
is excurved at vein 1. Reniform macula indicated by fine black and white streaks. Exterior line indiscernible. 
Submarginal line only indicated by a pale spot at the anal angle. 30 mm. 1 $ from Sikkim. 
G. mediolineata B.-Bak. is presumably similar to an indistinctly marked niveivitta. Forewing lilac medioli- 
brown, with a pale indistinct radial stripe through the cell as far as the distal margin, and a broad straight 
dark blotch below it. Exterior line indicated by dark irregular spots. Hindwing greyish brown, somewhat 
diaphanous at the base, cj, 24 mm. New Guinea. 
1 G. elongata Hulst. Forewing brownish ochreous. Interior line black, more incurved below the cell, elongata. 
A pale ring at the cross-vein is filled with brown, horizontally divided in the ground-colour. Exterior line 
brown, double, filled with white, somewhat outward as far as vein 4, then sharply inward. Dark greyish brown 
at the apex with a brownish ochreous Z above vein 6, with a white dot above it, before the white submarginal 
line. Hindwing greyish brown. It deviates from Gyrtona by the double anal tuft which is otherwise typical 
for Euteliinae. 
Subfamily: Sarrothripinae. 
In dealing with the Palaearctic Fauna, this subfamily being, like so many of the Noctuid groups, rather 
inhomogeneously classified is mostly comprised with the “ Cymbidae ” which are separately dealt with here 
under the name of Acontiinae (see the next group). As the palaearctic regions only harbour a very moderate 
number of forms both of the Sarrothripinae (11 species) and of the Acontiinae (43 species) and but few of them 
occur in Europe, this comprehension does not essentially obstruct the perspicuity. The disadvantage of unit¬ 
ing such heterogeneous elements as the Sarrothripus with the Eligma becomes evident by comparing the species 
nearly all of which were figured in the Voll. 12 and 15, and besides, the violence of this systematical arrange¬ 
ment in considering the larval forms had been pointed out in the introduction to the Acontiinae. 
Hardly any characteristic mark can be quoted in the Sarrothripinae, that might refer to all the 
genera ranged here now; it is solely the retinaculum cutting off (in the A) the base of the cell on the forewing 
beneath like a cross-bar, that occurs nearly everywhere, but we also find it in the Acontiinae, so that Hampsox 
himself considers the Sarrothripinae to be merely a “slight form of development' 5 of the Acontiinae, thus re¬ 
garding the union of these two subfamilies by no means unfeasible. 
The multifarious differences of the single genera, also in the Indo-Australian Region, refer to the whole 
structure. The antennae may be pectinated, provided with ciliary tufts, or also plain (“bristle-shaped”). The 
wings are entirely margined in most of the species, but they may exhibit either deep indentations — similar 
to the bite of a bird’s beak — (Etanna, Elaeognatha) or also sometimes lobes at the margin of the hindwing 
(Blenina angulipennis) ; the fore wing as well as the hindwing often exhibit peculiar scale-pads and velvety 
spots, and the mostly smoothly scaled thorax may bear combs or not. Very strange is the structure of the body 
in the Gardirtha the pupa of which rests in a very low, greyish bark-coloured, though soft case on the trunk 
of the food-tree and is therefore flattened, so that it can only strike sideways. In this way it produces a sound, 
playing the “harp” as it were with a chitinous prominence at the abdominal end on silk-cords which are spun 
by the larva into the inside of the cocoon. Owing to the lowness of this cocoon which does not project visibly 
from the surface of the bark, the broadly built body of the imago is quite flat, so that, it scarcely juts out on 
the resting place, rendering the bark-coloured lepidopteron utterly invisible. 
As in the Sadarsa of the preceding group (cf. S. longipennis, 35 g) there occur extreme distortions of 
the shape of the wings also among the Sarrothripinae, which may assume the exact shape of lancets by their 
narrowing down to stripes, so that the interior angle disappears altogether ( Eligma , Vol. 2, pi. 13 1, and Vol. 15, 
