PSEUDOPHASSUS. By R. Pfitzner 
1301 
like Callipielus arenosus (185 b), rather robust. Forewing yellowish ochre, tinged with orange. One sharply 
defined light longitudinal blotch each at the costa and inner margin. The 4 blotches together form a saltier the 
arms of which extend to half of the costa and inner margin. Hindwing brown, margined with yellowish ochre; 
thorax, head and legs yellowish ochre. Body and wings beneath yellowish ochre. According to one specimen 
in the Berlin Museum. South America. 
Ph. giganteus H.-Schdff. (100 d) is the largest of all the American Hepialidae and one of the largest Hetero- giganteus. 
cera altogether. The d of my collection has an expanse of 130 mm, the 4 vary from 150 to 200 mm, though 
there may occur even larger specimens. Dull orange or tan-coloured, the $ with darker median shadows and 
a silver stigma in the cell. Southern Brazil (Sa. Catharina) and Paraguay.—The very closely allied Ph. hayeki hayeki. 
Fotterle (185 b). from Petropolis. may be only a subspecies or local form; median area of the forewing dark brown 
with lighter costal spots. A double row of brown, light-edged oval spots at the inner margin of the forewing; 
sometimes they are also absent or indistinct. 
10. Genus: Pseudopliassus Weym!\ 
The 4 or 5 representatives of the momus-gxowp form a well defined genus (perhaps also only subgenus), 
recognizable by the robust habitus and the strong antennae, as well as by the distinctly marked dark, light-edged 
trapezoid spot at the lower end of the triangular marking close above the middle of the inner margin. The scheme 
of markings resembles that of excrescens from Japan (Vol. II, pi. 54 a, as herzi). 
Ps. tno in us Drc. (185 e). Abdomen and base of hindwing more or less red. momus Drc. has fawn-coloured momus. 
forewings, with dark red-brown bands at the costal margin and a large reddish brown triangular spot below the 
cell-end. A reddish white band crosses the wing at the cell-end and expands at the inner margin; a series of brown 
marginal spots from the apex to the anal angle. Hindwing fawn-coloured, almost red at the base. Body reddish 
brown; antennae and legs darker brown. 64 mm. Peru (Sarayacu). Fassl sent me from the Rio Songo (Bolivia) 
an allied form with a partly very bright vermilion abdomen and base of the hindwing. It is t he form denoted 
by Weymer as metricus (Weym. i. 1.) form. nov. (99 h). The red-tinged subspecies I denominate: songoensis. metricus. 
There are much more intensely coloured specimens. Described according to 7 specimens from the Rio Songo. son 0° ensis - 
45—65 mm. metellus Drc. (99 g) is mostly without any red, more yellowish brown, a golden stigma in the metellus. 
cell, antennae and legs black. Size of momus. Peru (Sarayacu, Upper Madeira, Chanchamavo). 
Ps. prosopus Drc. Body reddish brown, forewing pale reddish fawn-coloured, marbled darker, interior prosopus. 
part near the base reddish, 3 interrupted greyish bands traverse the wing behind the middle from the costa to 
the inner margin, fringe dark brown, hindwing pale reddish brown. Expanse: 75 mm. From Colombia (Bonda). 
Ps. mahagoniatus Pf. (99 li). 36—43 mm. The J dark mahogany red-brown, shaded dark red-brown mahagonia- 
in the distal half. A triangular marking in the median area, similar to that of triangularis , very distinct, dark 
red-brown, a silver stigma in the cell. Body dark brown, abdomen and base of the hindwing with reddish hair. 
$ larger, duller, without a reddish tinge (violettish brown). Marking of forewing blackish brown. Hindwing 
transparent at the base, without any red. Base of abdomen with very pale reddish ochreous hair. A couple 
captured by Fassl on the Rio Songo in 1912. 
Alphabetical List 
with reference to the original descriptions of the forms of the American Hepialidae. 
* signifies that the form is also figured at the place quoted. 
absyrtus Phass. Schs. Proc. Zool. Soc. Loud. 1892, p. 330. 
agrionides Phass. Wkr. List Lep. Het. Br. Mus. 7, p. 1567. 
arenosus Pi. Bttr. Trans. Ent. Soc. Bond. 1882, p. 24. * 
argenteomaculatus Sthen. Harr. Rep. Ins. Mass. 295 (1841). 
argentiferus Phass. Wkr. List Lep. Het. Br. Mus. 7, p. 1566. 
assa Dal. Drc. Biol. Centr.-Amer. Lep. Het. 1, p. 232. * 
auratus Sthen. Gr. Canad. Ent. 10, p. 18. 
aurigenus Phass. Pjitzner in Seitz, Macrolep., Bd. 6. p. 
1299. * 
basirei Phass. Schs. Entom. Amer. 6, p. 46. 
basirubra Dal. Schs. Journ. N. York Ent. Soc. 9, p. 76. 
behrensi Hep. Stretch Hep. Zyg. & Bomb. N. Amer. p. 105. * 
brunnea Gib. Schs. Journ. N. York Ent. Soc. 9, p. 77. 
californicus Hep. Bsd. Ann. Soc. Ent. Belg. 12, p. 85. 
champion! Phass. Drc. Biol. Centr.-Amer. Lep. Het. 1, p. 233. 
chiriquensis Dal. Pjitzner in Seitz, Macrolep., Bd. 6, p. 
1294. 
cocama Dal. Pjitzner in Seitz, Macrolep., Bd. 6, p. 1296. 
confusus Phym. H. Echo. Papilio 4, p. 122. 
coronata Osr. Drc. Ann. Mag. Nat. Hist. 5, p. 514 (1900). 
coscinophora Dal. Pjitzner in Seitz, Macrolep., Bd. 6, p. 
1294. 
eostaricensis Phass. Drc. Biol. Centr.-Amer. Lep. Het. 1, 
p. 234. * 
cuprifera Dal. Pjitzner in Seitz, Macrolep., Bd. 6, p. 1294. * 
demutatus Phym. Barn. & Benj. Pan Pacif. Ent. 2, p. 82. 
dimidiatus Hep. Berg, Ann. Soc. Argent. 13, p. 220. 
dorita Cib. Schs. Journ. N. York Ent. Soc. 9, p. 76. 
dormita Cib. Schs. Journ. N. York Ent. Soc. 9, p. 77. 
cldorada Phass. Pjitzner, Iris 18, p. 276. 
epigramma Dal. H.-Schdjj. AuBereur. Schmett. t. 31, f. 146. * 
exclamans Dal. H.-Schdjj. AuBereur. Schmett., t. 31, f. 145.* 
exclamationis Phass. Pjitzner in Seitz, Macrolep., Bd. 6, p. 
1300. 
