Costal edge of valva rounded; setae on valva generally uniform in size, no extremely stout dipapha, new species 11. Posterior margin of 6th sternite medially invaginated orichalcella (Clemens) Posterior margin of 6th sternite even 21 21. Posterior margin of 8th abdominal segment with numerous setae 27 Posterior margin of 8th abdominal segment with few hairs 28 27.
Costal margin of valve curved at two-thirds of length, apex acutely acute; apex of aedeagus with a short, dorsal flange, a series of small triangular projections ventrolaterally three-quarters, others dorsally beyond half; pos-. Males of opinatrix can be separated from those of other species of Periploca by having the aedeagus armed with four three-quarter conical projections, the anterior edge of the vinculum emarginate, and the apex of the valve acute. Tip of aedeagus bent, armed with a row of 6-8 conical projections on right side from about half to three-quarters; costal margin of valve strongly convex, apex open; posterior margin of vinculum emarginate medially.
The male genitalia of devia are closest in general configuration to the genitalia of cata, but they differ in that they have an aedeagus armed with a relatively small number (5-6) of well-visible outgrowths, the tip of the aedeagus is strongly narrowed and curved to the left and widened. - ing, but at a short distance behind the posterior margin of the vinculum. The female genitalia are closest to those of the laeta, but differ in that they have an anterior margin. One, rare row of setae on eighth segment; ostium bursae round, surrounded by an incomplete (open anteriorly), strongly sclerotized ring located slightly posterior to anterior margin of seventh sternite; ductus bursae membranous with about seven loops; corpus bursae slightly sclerotized; a pair of crescentic markings on the basal third of the corpus bursae.
The possession of a long projection from the inner surface of the valve will immediately distinguish male labes from males of other Periploca species. The presence of a crescent-shaped mark, membranous ductus bursae, ostium bursae posterad the anterior margin of the seventh sternite, the seventh sternite essentially simple and a single set of appendages on the eighth segment will in combination be characteristic of female labes . Work by George Manglitz (in litt.) in Lincoln, Nebraska suggests that the species may be a minor economic pest.
When series of specimens are available, several general statements can be made about populations: The California specimens are large and pale, usually the basal dark brown spot contrasts sharply with the rest of the wing, which is pale yellow, and the hindwings are often pale yellow . The northern Arizona population is represented by large specimens (mean: 16.4 mm, range mm, 70 specimens measured) with relatively uniform markings; the yellow-brown area beyond the basal, dark brown spot is moderately dark, becoming yellow-brown over a short distance. Genital plate relatively complicated, a pair of flanges running from the anterior to posterior margins of the seventh sternite, beginning near the lateral margin and ending medially in a pair of pointed, detached margins; ostium bursae in the anterior part of the seventh abdominal segment, with opening to the outside near or at the end of the segment; ductus bursae is widest at ostium bursae, tapers slightly past half its length and then gradually widens into corpus bursae, basally one-quarter moderately sclerotized; corpus bursae almost membranous, wall with fine spicules;
Males with purpuriella can be identified by examination of the abdomen without resorting to genital preparation. Examination of the male genitalia of other Stilbosis species has shown that Aeaea and Stilbosis are very close, if not the same. The fact that the saccular edge of the valva is heavily sclerotized accounts for some, but not all, types of Stilbosis.
An extremely obvious difference is the nature of the scales: Stilbosis has metallic scales in shades of yellow and brown. Differences in the nature of the scales are usually not significant enough to separate the genera; but, until I have an opportunity of studying many Neotropical representatives of Stilbosis, I prefer to keep the two genera rather than separate. Busck lists Lonchocarpus sericeus as the larval host; but this plant is not known to occur in Florida, so another legume probably serves there.
Males 2 Females 5
Legs: (not all present) shining dark gray to black, apex of hind tibia and all tibial spurs white. Apex of valve retracted to ventral point, spine curved one-half to two-thirds. Head shining white; outer surface of second segment of labial palpus (except tip), a series of scales along dorsal and anterior margins of eyes, and antenna dark gray.
Forewing spotted dark grey; with four black spots, one on fold at two-fifths length of wing, one in middle of wing, one at end of cell, and one at apex of wing, first two followed by gray-white scales, last two preceded by grey-white scales; a white spot on the edge of the pad and one on the dorsal side of the wing at three-quarters of the length of the wing.- Hindwing slightly paler than the forewing. Proleg: coxa mottled pale and medium grey, looking light; femur and tibia dark gray, apex of epiphysis and tibia off-white;. Head usually shiny light to medium grey; inner surface of labial palpus shiny orange-white, outer surface dark grey; base of tongue medium to dark gray;.
Hind leg: coxa yellowish white mottled with pale gray; femora yellowish white, dark gray (almost black at base and top); tibia grey, top, transverse line on one half and spurs yellowish white, spurs. Some variation occurs in the amount of light or dark scales on the head, with individuals appearing very light to dark gray. Summered specimens take on a brownish hue as the overlying dark gray wing scales wear away.
Middle leg: coxa whitish yellow; femur white to yellow basally, becoming pale gray distally; tibia mottled white yellowish and pale grey, dark gray basally, spur yellowish white with a dark gray ring just before tip;. Hind leg: Coxa mottled yellow white and medium grey; femur yellow-white, heavily dusted with dark gray at base and apex; tibia mottled pale and dark gray (scale bases are pale), a transverse pale gray band at the base of the first pair of tibial setae and at the tip pale gray to light white, spongy white pale, fringed with gray before tips; tarsus dark grey, base and apex of first, tips of second, third and all fifth segments white. Head: base of tongue and lips shining, pale gray, crown and nape becoming medium to dark gray; outer surface of labial palpus dark gray brown, base of third segment pale, inner surface pale orange to orange white; antennae grey, some pale axis scales.
Forewing: Dark gray brown, scale base pale; four indistinct solid dark spots followed by off-white scales and preceded as in eremos by an apical dark spot separated distally by pale scale bases; a pale gray-white costal patch on three-quarters of the wing length. Hind leg: coxa mottled yellowish white, medium gray and dark gray brown, femur pale yellowish white, base and apex dark gray brown;
Proceedings of the Academy of Natural Sciences of Philadelphia, 1860:156-17
FIGURES 1-3.—1, Periploca hortatrix, new species, Devil's Den State Park, Arkansas; 2, Stilbosis lonchocarpella Busck, Key Largo, Florida; 3, Sorhagenia baucidis, new species, Putnam County, Illinois. FIGURES 4-6.-4, Sorhagenia pexa, new species, Devil's Den State Park, Arkansas; 5, Siskiwitia alticolans, new species, Madera Canyon, Santa Rita Mountains, Arizona; 6, Perimede parilis, new species, Devil's Den State Park, Arkansas. FIGURES 21-23.—Male genitalia: Perimede parilis, new species, 21, genitalia with accessory glands removed; 22 genitalia with accessory glands in place; 23, accessory gland.
FIGURES 24-26.-Male genitalia: 24, 26, perimede circitor, new species (26, eighth abdominal segment); 25, Perimede parilis, new species, eighth abdominal segment. Manuscripts for serials are accepted by the Smithsonian Institution Press, subject to substantive review, only through departments of the various Smithsonian museums. If submission is invited, the following press format requirements will govern the preparation of copy.
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