A new species of Elasmia Moeschler from New Mexico and Texas, and a new subspecies of Elasmia mandela (Druce) from Texas and Oklahoma (Lepidoptera, Notodontidae, Nystaleinae) Author Metzler, Eric H. Author Knudson, Edward C. text ZooKeys 2011 149 51 67 http://dx.doi.org/10.3897/zookeys.149.1519 journal article http://dx.doi.org/10.3897/zookeys.149.1519 1313-2970-149-51 Elasmia packardii (Morrison, 1875) comb. n. Figs 1 -411- 1320, 2326 Description. Overall color light gray blue to gray with obscure transverse forewing markings, sometimes showing slight brownish shadings over reniform spot and in postmedial and subterminal areas. Males and females similar in appearance; male antenna narrowly bipectinate in basal 3/4 , with dense setae on ventral surface. Female antenna filiform for entire length, with sparse setae. Apex of forewing marked with a diagonal white and dark shade. Forewing length in males 12-15 mm (mean = 14 mm, n = 72), and in females 13-16 mm (mean = 14 mm, n = 25). Male genitalia (Figs 11-13) distinguished by a helmet-shaped uncus with gradually widening sides. Female genitalia (Fig. 20) with membranous papilla anales partially hidden from view. Ductus bursae broad and short, dorso-ventrally compressed; corpus bursae, round in profile, with a single shark tooth-shaped signum, also with a heavily sclerotized, perpendicular, thumb-like projection ventrally and a sclerotized finger-like pocket appressed to corpus bursae dorsally. Deciduous cornuti from male vesica may be found in corpus bursae. Remarks. Morrison (1875) described Elasmia packardii from Waco, Bosque County, Texas (Fig. 2) based on a single female specimen (Fig. 1). Adults are on the wing from April through early October. Distribution and Biology. Elasmia packardii occurs in Texas, Arizona, New Mexico, Oklahoma, and Kansas (Fig. 26); it is common at Carlsbad Caverns National Park. Its distribution in Mexico is unknown. The larvae feed on Ungnadia speciosa Endl. (Mexican buckeye) (R.O. Kendall specimens in TAM) and Sapindus saponaria var. drummondii (Hook. & Arn.) L. Benson (soapberry tree) (both Sapindaceae ) (R.O. Kendall specimens in AMNH and TAM). Figures 1-6. Elasmia adults. 1 E . packardii female holotype 2 E . packardii holotype labels 3 Elasmia packardii male 4 Elasmia packardii female 5 Elasmia cave male holotype 6 Elasmia cave female paratype. Figures 7-10. Elasmia adults. 7 Elasmia mandela male 8 Elasmia mandela female 9 Elasmia mandela santaana male holotype 10 Elasmia mandela santaana female paratype. Figures 11-19. Elasmia male genitalia. 11 Elasmia packardii male genitalia genital capsule slide E.H.M. 343 12 Elasmia packardii male genitalia detail of terminus of costulae slide E.H.M. 343 13 Elasmia packardii male genitalia aedeagus slide E.H.M. 343 14 Elasmia cave male genitalia paratype genital capsule slide E.H.M. 355 15 Elasmia cave male genitalia detail of terminus of costulae slide E.H.M. 355 16 Elasmia cave male genitalia paratype aedeagus slide E.H.M. 355 17 Elasmia mandela santaana male genitalia paratype genital capsule slide E.H.M. 359 18 Elasmia mandela santaana male genitalia detail of terminus of costulae slide E.H.M. 359 19 Elasmia mandela santaana male genitalia paratype aedeagus slide E.H.M. 359.