322 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part 3 



16. Genus Idiolispa 



Figure 316,a 



Idiolispa Foerster, 1868, Verh. Naturh. Ver. Rheinlande, vol. 25, p. 188. Type: 



Bassus analis Gravenhorst; included by Brischke, 1881. 

 Liocryptus Thomson, 1873, Opuscula entomologica, fasc. 5, p. 489. Type: 



Bassus analis Gravenhorst; monobasic. 

 Paracryptus Szepligeti, 1916, Ann. Mus. Nat. Hungarici, vol. 14, p. 251. 



Type: Paracryptus hungaricus Szepligeti; monobasic. 



Front wing 3.6 to 8.5 mm. long; frons unarmed; clypeus large, con- 

 vex, its apical margin broadly convexly arcuate, without a median 

 tooth; thorax stout and short, first abdominal segment long, and 

 rest of abdomen short, the fu'st abdominal segment 0.50 to 0.58 as 

 long as thorax; mesoscutum short, wealdy convex, polished or sub- 

 polished, its punctures moderately coarse and separated by about 

 their diameter; notaulus weak or absent, not reaching center of 

 mesoscutum; epomia absent or weak; prepectal carina reaching 

 dorsad to subtegular ridge; prepectus Avithout a short vertical carina 

 opposite lower corner of pronotmii ; propodeum in profile rather weakly 

 convex, sloping, its basal carina strong and complete, its apical carina 

 strong, forming weak to moderately strong, broad, sublateral crests, 

 medially often weak, or sometimes absent; propodeal spiracle 

 elliptic; areolet large, quadrate, its sides subparallel; ramellus short 

 or absent; nervulus opposite or a little basad of basal vein; mediella 

 moderately arched; nervellus broken near its lower 0.3; axillus short, 

 either convergent to or divergent from anal margin; first tergite 

 moderately long and slender, ratiier gradually and moderately widened 

 apically, its spiracle rather far behind the middle, postpetiole moder- 

 ately convex above, without a basal lateral tooth, ventrolateral 

 carina sharp and complete, dorsolateral carina complete but blunt, 

 and median dorsal carinae absent or short and weak; second tergite 

 polished or subpolished, its punctures moderately dense to very sparse, 

 varying from very fine and weak to moderately small but strong; 

 tergite 7 with or without a median white mark ; ovipositor sheath about 

 0.24 as long as front wing; ovipositor rather slender, gradually tapered 

 to the apex, without a distinct nodus. 



Idiolispa is a small genus, of Holarctic distribution. Hidryta 

 is a close relative and it may be that species intermediate to Hidryta 

 will be discovered, which will make it necessary to merge the two 

 genera. 



The species occur mostly in overgrown fields, edges of woods, or 

 in open woods, not in open meadows nor usually in dense woods. 



