SYNOPSIS OF SPECIES OF TENTHREDO. 73 



and nY/V/x, &c., on the other differ in the form of 

 the mouth, antennae, and in the posterior wings in the 

 c?, while one section has the blotch, the other being 

 without it. But, in point of fact, there does not 

 appear to be any absolute distinction between the two 

 groups, and they can only be retained apart as a 

 matter of convenience. 



Analytical table of Species. 



1 (2) Antennso entirely yellow. Flava. 



2 (14) Antennae with the apical joints white. 



3 (10) The fifth joint black, a double white mark over hinder coxae. 



4 (5) Scutellum white. Solitaria. 



5 (4) Scutellum black. 



6 (7) Stigma distinctly white at the base. Livida. 



7 (6) Stigma not white at the base. 



8 (9) Apex of abdomen black ; tegulae black. Coryli. 



9 (8) Apex of abdomen red; tegulse red. Colon. 



10 (11) Third joint of antennas white, a single spot over hinder coxae. 



Velox. 



1 1 (10) Fifth joint white, no white spot over coxae. 



12 (13) Tegulae white, pleurae more or less rufous. Rufiventris. 



13 (12) Tegulae and pleurae black. Balteata. 



14 (31) Antennae entirely black. 



15 (18) Abdomen banded with red. 



16 (17) Inner orbits of the eyes white ; two spots over posterior coxae. 



Lachlaniana. 



17 (16) Inner orbits of the eyes black ; one spot over hinder coxae. 



Moniliata. 



18 (15) Abdomen entirely black, legs red. 



19 (24) Clypeus white, hinder legs for the greater part red. 



20 (23) One or two marks over hinder coxae ; pronotum white. 



21 (22) A single spot over hinder coxse, legs red. Dispar. 



22 (21) A double spot over hinder coxse, legs yellowish. Scotica. 



23 (20) No white mark over coxae, pronotum black. Atra. 



24 (19) Clypeus black, posterior legs entirely black. Mandibularis. 



25 (28) Abdomen and legs yellowish. 



26 (27) Scutellum, tegulse, and hinder tarsi for the greater part yellow. 



Maculata. 



27 (26) Scutellum, tegulse, and hinder tarsi for the greater part black. 



Bicincta. 



28 (25) Abdomen and legs green. 



29 (30) Pleurae and breast green. Mesomela. 



30 (29) Pleurae and breast black. Obsoleta. 



31 (38) Antennae green beneath, body and legs green. 



32 (33) Cheeks indistinct, accessory nervure in posterior wings inter- 



stitial ; hinder tarsi with the black continuous. Olivacea. 



33 (32) Cheeks distinct, accessory nervure appendiculated, tarsi annu- 



lated with black. 

 31 (37) Pleurae without a black stripe, tarsi annulated with black. 



