12 DINEU1IA VIEIDIDOESATA. 



11 (3) Transverse radial and second recurrent nervures interstitial ; 

 transverse basal nervure received beyond the transverse 

 costal ; body ovate ; thorax more or less marked with red ; 

 antenna thick. Verna. 



1. DiNEURA VI1UDIDORSATA. 



Vol. I, PL III, fig. 4, Lar. ; PL VI, fig. 12, Mandible 

 of Lar. ; PL XXI, fig. 7, Saw ; Vol. II, PL XXVII, 

 fig. 2, Trophi of Larvae. 



Tenthredo viridi-dorsata, Retz., Degeer, 73, 312 ; Degeer, Mem., 

 ii, 266-7, 20, t. H8, figs. 810. 



ulmi, Fall., Acta Holm., 1808, 123, 67- 



Degeeri, Klug., Berl. Mag., viii, 213, 169. 



Geeri, Ste., 111., vii, 80, 25. 



varius, Lep., Mon ., 69, 208. 



Dineura virididorsata, Andre, Species, i, 90; Cat., 11,* 1. 

 Dineura Degeeri, Htg., Blattw., 227, 1 ; Cam., Fauna, 27, 1 ; 



Br. and Zad., Beobach. ii. Blattw. 



(2), 31, Taf. i, fig. 9 (lar). 



Hartigii, Gimmerthal, S. E. Z., v, 36 (1844). 

 Nematus Degeeri, Thorns., Hym. Sc., i, 80, 1 ; Cam., So. Nat., ii, 



113 (lar.). 



E/eddish-yellow ; vertex, mandibles, more or less of rneso- and 

 metanotum, and dorsal surface of abdomen, black; apex of posterior 

 tibia3 and joints of tarsi fuscous. Wings hyaline ; costa and stigma 

 pale- testaceous ; nervures fuscous. 



The <J has generally the meso-, metanotum, and the greater part of 

 the dorsum of abdomen, black. 



Length 3J 4 lines. 



Ab. a. Meso- and metanotum black. 



b. Mesonotum with three black stripes ; metanotum 

 and apex of posterior tibiaa and tarsi black. 



c. As in b, but metanotum yellow. 



d. AJbdomen entirely reddish-yellow. 



e. Antennae blackish. 



The images appear towards the end of May and in 

 June. The larvas are found from August to October 

 lying stretched on the upper surfaces of birch leaves, 

 of which they eat the upper cuticle, thus leaving the 

 leaf entirely white or with white blotches. Generally 

 several are found on a leaf. In habits they are very 

 sluggish. 



