1222 
SYNANTHEDON. By B. Zukowsky. 
peltastifor¬ 
mis. 
panurgifor- 
mis. 
opiiforrnis. 
le moulti. 
benoisti. 
germaini. 
plagiophleps. 
myrmosae- 
pennis. 
glyptaefor- 
mis. 
S. peltastiformis Wkr. Black, head in front silvery, behind with yellow hairs, palpi dingy yellow, with 
black hairs at the base. Antennae club-shaped, rust-coloured, and rough below, somewhat longer than the 
thorax. Pectus on each side with a yellow r spot in front and another one at the base of the fore wing (shoulder- 
spot), the abdominal segments with yellow posterior margins, the anal tuft with a few yellow hairs on each 
side below. Femorae with yellow stripes. Anterior tibiae and tarsi dingy yellow, middle tibiae with a yellow 
band, hind tibiae with yellow hair at the base and end, as well as a w r hite place below between the spurs. Wings 
transparent with a yellow reflection, fringes short. The 2nd interior vein of the forewing somewhat nearer to 
the 1st. than to the 3rd. the third nearer to the 4th than to the 2nd, the 2nd upper vein bifurcates before half 
of its length. IS mm. Villa nova. Only ! $ known. 
S. parsurgiformis Wkr. Purple black. Head white and lustrous, with pale yellow- hair behind. Palpi 
whitish, oblong, darker to the end. Antennae club-shaped, longer than the thorax, rust-coloured below, the 
apex remains dark. Thorax with three yellow stripes. Pectus mostly covered with yellow hair. Abdominal 
segments with yellow bands, beneath with a yellow streak. Anal tuft with a few yellow hairs on each side. Legs 
with yellow bands, hind tibiae rather thickly haired. Wings transparent, margins blackish coppery. Forewing 
with a blackish coppery transverse band. 16—17 mm. Para, Santarem, Tapayoz, Villa nova. Only $$ known 
so far. 
S. opiiforrnis Wkr. Bluish black. Orbita white, palpi whitish below. Antennae very much longer than 
the thorax. Posterior margins of the abdominal segments whitish, anal tuft golden yellow. Legs with silvery 
white bands, anterior coxae silvery. Wings transparent; forewing with purple blackish fringe, costa and cross¬ 
vein. 12—14 mm. Para. 1 $ known. 
S. le moulti Le Cerj is a not quite certain species which is said to be similar to benoisti Le Cerj and cater- 
naulti Strd. (p. 1230). Chiefly black with few white markings. South America. 
S. benoisti Le Cerj (176 d). face blackish blue, edged white before the eyes. Palpi purely white 
below, black above. Antennae blackish blue, with a small white preapical spot above. Collar and thorax blackish 
blue, with fine yellow streaks sideways, pectus below with a round whitish yellow spot on each side. Abdomen 
long and thin, blackish blue, the 2nd and 3rd segments edged with pale yellow; anal tuft long, blackish blue 
with a few white hairs laterally; ventrum white, the last segment blackish blue. Legs blackish blue and white. 
Forewing transparent, with black margins and veins, the distal margin and the discal vein purple black, the 
distal margin traversed by five veins, pale yellow between them, beneath the costal and posterior margins and 
the main veins are yellowish. Hindwing transparent, all the fringes bronze purple. Le Cerf sees in a damaged 
specimen from Guiana the $ of benoisti. It is larger, the 2nd and 3rd abdominal segments edged with whitish 
yellow. Anal tuft white on each side, ventrum white as far as the 4th segment, the last segments black. Fore- 
wing with a broader distal margin, the distal area correspondingly smaller, almost twice higher than broad, 
the discal vein much thicker. $ 14 mm. $ 19 mm. French Guiana, Gourdonville; October. 
S. germaini Le Cerf (176 c). head black, face white, palpi whitish yellow, antennae black above, 
brown below, especially before the apex. Collar and thorax blackish blue, abdomen black, the 4th segment 
with yellow rings, anal tuft black, with yellow traces laterally and in the middle, the 4th, 5th and 6th segments 
yellowish white beneath. Legs yellow and black. Forewing transparent, margins, veins and discal vein blackish 
blue, hindwing transparent, veins and margins black, fringes of all the wings black. separated from the q 
by a black face, white around the eyes, the anal tuft being black only in the middle and slightly outside, only 
two white abdominal rings beneath, and a smaller transparent distal area. 12-5—19 mm. Brazil. Novo Friburgo, 
Nova Teutonia; Sa. Catharina (Plaumann), February. 
S. plagiophleps sp. n. (177 a). One of the very common South-American species which are marked 
bluish black and yellow and are evidently all very closely allied, as for instance germaini Le Cerf, peltastiformis 
Wkr., flavipectus Le Cerf, flavostrigata Le Cerf etc. The species is easily distinguished from among all the others 
by the discal vein of the forewing being very obliquely inclined inwards and the relatively narrow distal margin, 
which is broadest at- the apex, getting extremely fine towards the interior angle and exhibiting no marking 
Antennae and head black, white before the eyes, the palpi and collar yellow, thorax blackish blue with two 
dist-ipct marginal lines. Abdomen and anal tuft black, the 1st, 2nd and 4th segment finely edged with yellow 
behind, quite yellow- beneath. Legs predominantly yellow, the end of the tibiae above black. Forewing hyaline 
wdtli the marks mentioned; hindwing hyaline, margins and veins blackish brown. fringe greyish brown. 16 to 
17 mm. 1 2 2?. Bolivia, Rio Songo. Types in the Berlin Museum. 
S. myrmosaepenms Wkr. Bluish black, face and orbita w'hit-e. Palpi w-hit-e, striped black. Antennae 
rough below-, tw-ice as long as the thorax which exhibits yellow stripes on each side. Metathorax yellow. Ab¬ 
domen blackish blue, yellow on the posterior margin of each segment. Anal tuft rather long and black. Tibiae 
and tarsi with white bands. Wings transparent with short fringes; forewing blackish blue along the costa, the 
distal area as w-ell as the spot on the discal vein likew-ise blackish blue. 18—20 mm. Para. 1 q. 
S. glyptaeformis Wkr. Purple coppery, face silvery. Palpi yellow. Antennae dark, yellow below-, with 
