74 TENTHREDO FLAVA. 



35 (36) Vertex slightly, sutures of mesonotum, and a row of small 



black dots along the upper sides of abdomen black. 



Punctulata. 



36 (35) Vertex, mesonotum, and back of abdomen broadly black. 



Viridis* 



37 (34) Mesopleura with a black splash, transverse radial nervure 



interstitial, posterior tarsi entirely black. Picta. 



38 (31) Antennae testaceous beneath, abdomen with a reddish band. 



39 (40) Sides of abdomen yellow ; third cubital cellule short ; legs 



entirely red. $ with the pleurse white. Lateralis. 



40 (39) Sides of abdomen not yellow ; legs lined with black ; third 



cubital cellule long. $ with the pleurse black. Gibbosa. 



SECTION 1. Mesonotum punctured. Humeral cellule in 

 hind wing not appendiculated. Cheeks indistinct. 



Antennae entirely and legs and body for the greater part yellow. 

 Scutellum sharply peaked ; pleurse finely tuberculate. A white 

 spot over posterior coxse (Species 1). 



1. TENTHREDO FLAVA. 



Tenthredo flava, Scop., Ent. Car., 731; Andre, Species, i, 444, 

 pi. xxi,fig.2; Cat., 58,* 42. 



poecilocJiroa, Schr., En., 324, 654 ; Vill., Lin. Ent., 50. 



Havicornis, Fab., E. S., ii, 113, 31 ; S. P., 31, 9 ; Fall, 



Acta, 1808, 61, 22 ; Klug, Berl. Mag., 

 viii, 189, 132; Pz., F. G., Hi, fig. 2; 

 Rossi, F. E., 711 ; Vill., Lin. Ent., 

 73; Lep., Mon., 75, 224; Htg., 

 Blattw., 311, 48 ; Evers., Bull. Mosc., 

 xx, 54, 31 ; Thorns., Opus., 303; Hym. 

 Scand., i, 271. 



luteicornis, Fab., E. S., ii, 113, 32; S. P., 31, 10; Pz., 



F. G., Ixiv, fig. 1 (var.) ; Evers., BulL 

 Mosc., xx, 54, 32. 

 Allantus flavicornis, Ste., 111., vii, 64, 21. 



Pale yellow ; clypeus, labruni, mandibles, and a spot over the poste- 

 rior coxse, white ; head, pleura3, sternum, legs at the base and the four 

 apical segments of the abdomen, black. 



The $ similarly coloured, but with a black line over the posterior 

 femora. Wings yellowish, infuscated at the apex. 



Length 6 7 lines. 



Ab. a. Thorax black above. 



b. Posterior only, or the whole of the femora 

 black (luteicornis). 



According to Kaltenbach (Pfl., 269), the larva feeds 



