376 U. 8. NATIONAL MUSEUM BULLETIN 216 



genus Poemenia (below) is a separate, joint paper by Habeck and 

 Townes, included in this monograph for convenience of publication. 



Key to the Nearctic genera of Poemeniini 



1. Mandible with two apical teeth, the upper tooth smaller; clypeus evenly con- 



vex, about 2.0 as wide as long; upper half of temple without a coarsely 



scabrous area; areolet usually present 1. Poemenia (p. 376) 



Mandible without two apical teeth, its apex truncate and chisel-shaped; clypeus 

 basally convex and apically impressed, about 1.2 to 1.5 as wide as long; upper 

 half of temple with a coarsely scabrous area; areolet absent 2 



2. Tarsal claws with a subapical appressed tooth; second and third tergites densely 



punctate 2. Podoschistus (p. 387) 



Tarsal claws simple; second and third tergites often not distinctly punctate. 



3. Neoxorides (p. 390) 



The Nearctic species of Poemenia Holmgren 



By Dale Habeck 8 and Henry Townes 



1. Genus Poemenia 



Figure 301,a 



Poemenia Holmgren, 1859, Ofvers. Svenska Vetensk.-Akad. Forh., vol. 16, p. 130. 



Type: Poemenia nolata Holmgren; monobasic. 

 Calliclisis Foerster, 1868, Verh. Naturh. Ver. Rheinlande, vol. 25, p. 169. Type: 



Ephialtes hecticus Gravenhorst; designated by Viereck, 1914. 

 Phthinodes Tschek, 1868, Verh. Zool.-Bot. Ges. Wien, vol. 18, p. 272. Type: 



Ephialtes hecticus Gravenhorst; monobasic. 

 Euxorides Cresson, 1870, Trans. Amer. Ent. Soc, vol. 3, p. 167. Type: Euxorides 



americanus Cresson; monobasic. 

 Lissonotopsis Habermehl, 1917, Zeitschr. Wiss. Ins.-Biol., vol. 13, pp. 234, 306. 



Type: (Lissonotopsis rufa Habermehl) =notata Holmgren; monobasic. 



Clypeus moderately large, about 2.0 times as wide as long, evenly 

 convex, covered with rather long hairs, its apical margin concave; 

 mandible moderately long, with two apical teeth, the upper tooth 

 shorter; temple in profile about 0.53 times as long as eye, its dorsal 

 half sometimes with a weakly scabrous area ; mesoscutum moderately 

 trilobed; notauli strong anteriorly, fading out on disc of mesoscutum; 

 areolet present or absent, when absent the intercubitus about 0.8 times 

 as long as second abscissa of cubitus; nervulus usually opposite basal 

 vein, but sometimes before or a little beyond; tarsal claws simple, those 

 of the hind legs sharply curved in a right angle turn ; first tergite about 

 2.0 to 3.5 times as long as wide; second and third tergites with fine 

 dense punctures. 



This is a rather small, Holarctic genus. In North America there are 

 four species. Most of them occur in forests and are parasitic on hosts 



* North Carolina State College, Raleigh, N.O. 



