154 ALLANTUS VIDUUS. 



says, also, that the colour varies from brown to clear 

 green, and the markings are subject to irregularity. 

 The larva feeds on UmbellifercB and alder. 



Tenulus seems to be rare. Stephens says that it 

 was taken near London in July, and Mr. Dale informs 

 me that it has occurred in the Bristol district. 



Continental distribution: Sweden, Germany, Swit- 

 zerland, France, Italy, Tyrol, Russia and Greece. 



10. ALLANTUS VIDUUS. 

 PI. IX, fig. 3, ? . 



Tenthredo vidua, Kossi, F. E., 715, tab. 3, fig. 6 ; Lep., F. Fr., 



pi. 5, fig. 4; Mon., 93, 265. 

 sareptana, Evers., Bull. Mosc., xx, 39, 11. 

 Allantus viduus, Cam., E. M. M., xvi, 221 ; Andre, Species, i, 

 371; Cat., 47,* 1. 



Deep violet-black, shining, with, a few shallow punctures ; head and 

 thorax pilose ; the greater part of the third abdominal segment, above 

 and at the sides, and the posterior tibia?, except the extreme apex, white. 

 Wings dark violet black, iridescent. 



The <? has the posterior tibia? black. 



Length 67 lines. 



I have noticed the following aberrations : 



Ab. a. Anterior femora at the apex and tibiae in 

 front white ; fourth segment with a white line at the 

 side, that on the third being narrower in the middle. 

 $ and $ . These are two specimens from Sicily, 

 taken by Prof. Zeller, and stuck on the same pin. 

 The ? has the basal joint of the posterior tarsus 

 white, and the tibia in the # is white as in the ? . 



Ab. b. As in description, but anterior tibige white 

 in front. $ . 



Ab. c. Apex of anterior femora and tibise white in 

 front ; abdomen without the white ring. $ . A speci- 

 men which I received from Dr. F. Endow, of Perle- 

 berg, with the locality Greece. 



In the form of the head, antennse and body gene- 

 rally viduus agrees with tenulus. The deep violet- 

 black colour distinguishes it from all the other forms. 



As a British species it is known by a single speci- 



