220 U. S. NATIONAL MUSEUM BULLETIN 216 



8. Abdominal tergites with rather close, coarse punctures; ovipositor sheath 1.4 



to 1.8 as long as apical depth of abdomen (about 1.4 as long in the American 



species) 7. Oxyrrhexis (p. 242) 



Abdominal tergites with sparse punctures or almost impunctate; ovipositor 

 sheath 3 to 4 times as long as apical depth of abdomen. 



8. Polysphincta (p. 245) 



9. Mesoscutum rather densely hairy all over; abdominal tergites in the American 



species rather closely punctate, each with a transverse impression. 



3. Zabrachypus (p. 228) 

 Mesoscutum partly or entirely hairless, at least its lateral lobe partly hair- 

 less 10 



10. Epomia absent (fig. 294,b); third tergite with a weak transverse impression. 



5. Eruga (p. 238) 



Epomia present (fig. 297,b) ; third tergite with oblique grooves which delimit 



a median rhombic area 11. Zatypota (p. 262) 



1. Genus Laufeia 



Figure 292,b 



Laufeia Tosquinet, 1903, Mem. Soc. Ent. Belgique, vol. 10, p. 381. Type: 

 Laufeia mira Tosquinet; monobasic. 



Front wing 2.9 to 5.8 mm. long; eye with rather short sparse hairs, 

 more conspicuously hairy in female than in male; clypeus transversely 

 hexagonal, convex transversely but almost flat longitudinally, almost 

 in same contour as face but separated from it by a groove; epomia 

 straight, slanted forward a little; mesoscutum polished or subpolished, 

 evenly covered with moderately dense hairs ; notaulus long and strong ; 

 prepectal carina rather long but ending far from front edge of meso- 

 pleurum ; pleural carina complete ; legs of moderate stoutness ; areolet 

 present, subrhombic; nervulus postfurcal by about 0.25 its length; 

 discoidella rather strong; first tergite moderately slender; second to 

 fourth tergites polished, with impressions setting off a median sub- 

 rhombic area on each, the subrhombic areas swollen a little laterally to 

 make suggestions of paired swellings on each tergite; impressions on 

 tergites 2-A more or less punctate; ovipositor sheath about 2 times 

 as long as apical depth of abdomen; ovipositor weakly curved upward 

 (fig. 332,c). 



The genus Laufeia contains the genotype from the mountains of the 

 East Indies, Polysphincta stigmata Uchida 1941 from Japan, the two 

 Nearctic species described below, and Pimpla pictifrons Thomson 1877 

 of Europe. The names stigmata and pictifrons have not previously 

 been referred to Laufeia (new combinations). These species seem to 

 be common where they occur. The Nearctic L. slossonae is the com- 

 monest polysphinctine in North American collections, and L. navajo 

 is sometimes abundant along the mountain-stream valleys in Arizona. 

 We found L. mira common at 3,000 to 7,800 ft. in the mountains of 



