Panthea guatemala Anweiler 2009, sp. n.

<i>Panthea guatemala</i> Anweiler, sp. n. urn:lsid:zoobank.org:act: B73B5B00-C011-41B9-B7A2-0F285C41234E Figs. 10-11, 49, 61, 70 <b>Type material.</b> <b>Holotype</b> male – “ GUATEMALA / San Lorenzo 1700 m [15° 7.002' N 89° 37.998' W] / 6-10.vi.1986 / P.T. Dang’ ’; “ HOLOTYPE / <i>Panthea</i> / <i>guatemala</i> / G.G. Anweiler ” [red label]; deposited in CNC. <b>Paratypes</b> (17 ♁, 2 &amp;female;): same data as holotype (10 ♁); MEXICO. Chiapas: Lagos de Colores, Route 17, 13.vi.1969, A. Mutura, coll. (1 ♁); San Cristobal, 21 miles southeast, Rt. 190, 1850 m, 30.vi.1989, Wolfe, Valverde and Mullins, coll.(1 ♁); Tapilula, 21.vi.1969, A. Mutuura (2 ♁). Oaxaca: Tierra Azul, 3 mi. n. Tlaxiaco, 7.viii.1992, 7500', H. Romack., coll. (1 ♁); 7 mi. s. Miahuatlan, 19.viii.1992, 7000', H. Romack, coll. (1 ♁, 1 &amp;female;); 3 mi. e. La Trinidad, 2.viii.1992, 8500', H. Romack, coll. (1 ♁); Sierra Juarez, Gulf slope, 4500', 8.iv.1992, J. Kemner, coll., (1 &amp;female;); Sierra Madre del Sur, ca. 32 km N. San Gabriel Mixlepec, 1590 m., 10.vii.1991, J. Kemner and H. Romack, coll. (1 ♁). [LACM; CNC; NYSM]. <b>Etymology.</b> The name refers to the country Guatemala, where the holotype and much of the type series originated. <b>Diagnosis.</b> <i>Panthea guatemala</i> is externally very similar to <i>P. gigantea</i> from northern Mexico. Their large size will separate them from all other Mexican <i>Panthea</i> except <i>P. gigantea</i>. Both sexes of <i>P</i>. <i>guatemala</i> can be separated from <i>P</i>. <i>gigantea</i> by range (Fig. 70) and by genitalic characters, the male by the narrow fused uncus (Fig. 49), which is bifurcate in <i>P</i>. <i>gigantea</i>, and the female by the laterally compressed and heavily sclerotized ductus bursae of <i>P</i>. <i>guatemala</i> (Fig. 61). Both sexes of <i>P</i>. <i>guatemala</i> have a faint but consistent white streak on the lower forewing from just basad of the antemedial line to just beyond the postmedial line; this streak is absent or much fainter in <i>P</i>. <i>gigantea</i>. <b>Description.</b> Sexually dimorphic; female larger and with broader forewing and darker hindwing than male; forewing length of male 22-25 mm, female 27-28 mm. <b>Head</b> – male antenna bipectinate with pectinations about 1.5 × as long as width of antennal shaft; female antenna simple; palps and frons a mix of dark brownish-gray and white hair-like scales. <b>Thorax</b> – collar and thorax a mix of dark brownish-gray and white hair-like scales; tegulae crossed by two diffuse oblique brownish-black bands; legs densely covered with long wooly gray-black and white hairs; tarsi banded white and gray. <b>Dorsal forewing (male)</b> – a mix of white and brownish-gray scales producing a smooth pale brownish-gray ground; basal line poorly marked; antemedial, medial and postmedial lines prominent, black; basal and antemedial lines straight or nearly so, medial line sinuous, bending outward at cubital vein then continuing almost straight to lower margin; postmedial line straight to vein M2, then bending inward and connecting with medial line in fold, diverging outward just before reaching lower margin; subterminal line nearly obsolete, very erratic, curving inward between veins M1 and M3, M3 and CuA1, CuA1 and 1A+2A, and defined by abrupt shift from gray to white scales, shading back to gray prior to reaching margin. A short, thin poorly defined black bar marks end of cell, and a faint diffuse white dash runs parallel to and below cubital vein between antemedial and postmedial lines. Fringe gray brown lightly checkered with white scales at veins. <b>Dorsal forewing (female)</b> – as in male but broader, more rounded and with fewer white scales and therefore darker overall. <b>Dorsal hindwing (male)</b> – white with long gray-brown hair, darkest in basal area and along inner margin; leading edge light gray; poorly defined faint light-gray medial and postmedial bands, latter terminating in a patch of gray at anal angle; narrow dark-gray terminal line; veins narrowly lined with dark gray; fringe white with a few dark scales between veins. <b>Dorsal hindwing (female)</b> – suffused with gray, medial band narrow, postmedial band much wider leaving only a narrow band of lighter scales along margin; terminal line wider than in male; fringe dark gray with a few white scales, checkered with white at veins. <b>Abdomen</b> – clothed with stiff brownish-gray hair. <b>Male genitalia</b> – (Fig. 49) valves simple, heavily sclerotized, cucullus rounded to a blunt ragged point; clasper large, scoop-shaped with double blade-like arms, inner branch longer, extending beyond upper margin of valve; tegumen with two large squared subuncal lobes; uncus flattened laterally with high rounded crown curving down, ending in narrow terminus bluntly to sharply truncated; aedeagus about 4 × as long as wide, somewhat flattened, flaring at terminus; vesica bulbous, tapering gradually into long ductus seminalis angled dorsad at about 45 degrees, oriented anteriorly; armed with two large cornuti, one on right near base, other larger and near crown. <b>Female genitalia</b> <i>–</i> (Fig. 61) papillae anales large, soft, thinly covered with stiff hairs, fused at base on dorsal side; sterigma massive, rounded, relatively smooth; ductus bursae wide, twisted to right, compressed laterally, thickly sclerotized for half its length or more before gradually flaring into corpus bursae; corpus bursae an oblong thin-walled sac, without signa. <b>Distribution and biology.</b> <i>Panthea guatemala</i> has been collected in the mountains of Guatemala and the states of Oaxaca and Chiapas in adjacent southern Mexico at elevations of 1580-1850 m (Fig. 70). Collection dates range from late May to late July (Mexico) and early November (Guatemala). The Guatemala specimens were collected in pine-oak forest at 1700 m.

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