LAMPRA. By Dr. M. Draudt. 
81 
and equable light yellowish-grey; the marking is otherwise the same, except the posterior transverse line and 
the undulate line being parallel almost in their whole course, wheras in the other species they diverge more 
towards the costa and the proximal margin. Arizona. 
A. bimarginalis Grt. (12 f) differs from the two others by the contrastingly reddish-yellow costal-marginal bimargina- 
part which never shows the reddish tint in the similar Lampra vittifrons', besides the collar is coloured like the l,s - 
ground of the forewing, whilst in vittifrons it is yellowish-white like the costal-marginal stripe; another mark 
of distinction are the dark brownish-grey hindwings. An apparently rare species from Arizona and New Mexico. 
A. totonaca Schs. (12 f) being doubtfully ranged here differs from bimarginalis by deeper blackish- tolonaca. 
brown forewings with a distinctly reddish-brown light costal-marginal stripe with 2 small black spots in it as 
the beginnings of the subbasal and antemedian lines; both the upper maculae are dark red-brown in a black 
cell; the marginal area behind the undulate line is light reddish-grey. Hindwings brown. Mexico (Jalapa). 
33. Genus: Lampra Hbn. 
This genus being better known as Rhynchagrotis or Triphaena has of late been very exhaustively examined 
by Foster Benjamin who published the result of his studies in an excellent monography (Bull, of the South. 
Calif. Ac. Sci. Vol. XX, Dec. 1921). The name Lampra Hbn. with fimbria as the sole type of the genus has 
the precedence. It contains Noctuids with unspined anterior tibiae, a smooth frons, flattened abdomen, the 
head and thorax covered with hair and scales; in contrast with the preceding genus Abagrotis the antennae 
are plain, ciliary, and the collar and prothorax are never raised keel-shaped. All the species are very much 
alike so that it is rather difficult to distinguish them. We follow Benjamin’s unrivalled arrangement. 
L. vittifrons Grt. (12 f) is easily discernible from all the others by the yellowish-white costal stripe vittifrons. 
of the forewing and collar; the thorax is not tufted. Forewing blackish with interrupted, lighter transverse 
lines and rather indistinct maculae. Hindwing very light, whitish with slightly brownish veins. Colorado, New 
Mexico, Utah, California. 
L. trigona 8m. (= cupidissima 8m.) (12 f) has, like sambo , short and broad wings and the thorax trigona. 
not tufted; the $ antennae are densely scaled, the cilia somewhat longer than the width of the shaft, the antennal 
end not ciliated. Forewing generally of a light yellowish ground-colour with a reddish or smoke-brownish tint; 
the markings are all present in the usual shape, though little prominent, only in some cases the maculae are 
filled with blackish and the transverse lines, too. Hindwing greyish-brown. California, Utah, Colorado, New 
Mexico, Arizona. 
L. sambo 8m. is somewhat smaller, and the forewings are somewhat longer, the marking is more sambo. 
distinct, the undulate line light, proximally accompanied by a decidedly darker or blackish shade; the area 
before the anterior transverse line is mostly just as band-shaped darker or even black. Hindwing blackish 
with more reddish fringes. Expanse of wings: 29 to 30 mm. Canada (British Columbia, Vancouver). 
L. mirabilis Grt. (12 f) is to be recognized by a long black basal ray extending to the postmedian line, mirabilis. 
and by the black filling of the cell likewise extending from the base to beyond the reniform macula, whereas 
the maculae are white; the thorax exhibits a parted dorsal tuft and usually a red-brown spot in the centre. 
Forewing coloured greyish-brown, with a lighter marginal area being dusted with grey. Hindwing dark brownish- 
grey. Expanse of wings: 36 mm. Colorado, Utah, New Mexico, Arizona, Nevada. 
L. discoidalis Grt. (12 g) has narrower, more elongate forewings than all the other species; like in discoidalis. 
mirabilis the cell is filled up with black; the thorax has the same red-brown median spot, and in fresh specimens 
there are traces of a parted dorsal tuft. Ground-colour varying from a brownish grey to a wood-coloured brown, 
just like the maculae, the area before the undulate lines being the darkest. Hindwing lighter brownish-grey. 
Expanse of wings: 34 mm. California, Nevada, Utah. 
L. placida Grt. (12 g) is an extremely variable species, so that hardly one specimen is like the other, placida. 
Forewing dark brownish-grey with a darker basal and subterminal area, the discal area broad, generally lighter, 
more brownish, the marginal area of a contrasting grey, the maculae and transverse lines marked somewhat 
lighter, the latter generally double; a median shade is present. Hindwing dark brownish grey. Very widely 
distributed from Canada to New Mexico and California. — ab. minimalis Grt. (12 g) has more reddish tints minimalis. 
and single transverse lines, and invariably a distinct median shade. 
L. bamesi Benj. (12 g). This species is difficult to separate from forbesi, duanca and nefascia, the barnesi. 
easiest by the rather different genitals. It is a larger species with a very variable ground-colour; the ring-macula 
