40 CBCESUS LATIPES. 



frequent poplar, aspen, birch, willows, hazel, and 

 mountain ash. Frequently they are very injurious. 



The larvse are found commonly from July to the end 

 of September, and they spin in the earth a longish 

 brown single cocoon. In the south of England there 

 are, I believe, two generations in a year, but in Scotland 

 I have only evidence of there being one, although I 

 have caught a in the middle of August, the usual 

 time for the imagos to appear being May and June. 

 Stephens says that the larva feeds on the gooseberry, 

 but this is doubtful. 



As parasites there have been recorded. TrypJion 

 gibbus, Ratz. ; Mesoleius melancholicus, Gr. ; M. sep- 

 tentrionalis, Ratz, ; M. sexlituratus, Grav. ; Poly- 

 sphinctus areolaris, R.atz. ; Mesoleptus testaceus, Gr. ; 

 Limneria argentata, Gr. ; Limneria chrysostictus, Rtz. ; 

 Pimpla angens, Gr. ; Ichneutes reunit&r, Nees ; and 

 Microgaster alvearius, Spin. 



Very common and generally distributed. 



Continental distribution : Lapland, Finland, Scandi- 

 navia, Denmark, Livland, Curlaiid, Ural Range, Ger- 

 many, France, Italy. 



2. CRCESUS LATIPES. 



Nematus latipes, Yillaret, Ann. Soc. Fr., i, 306, pi. 11, f. 46 



(1832); Hartig, Blattw., 185, 3; 

 VolL, Tijd. Ent. (2), ii, 174177, 

 pi. 8 (lar., coc., pupa, and both 

 sexes) ; Ent., v, 252255 ; Kal- 

 tenbach, Pfl., 607 ; Cameron, Proc. 

 Nat. Hist. Glas., ii, 301 ; Brischke 

 and Zaddach, Schrif. Ges. Konig., 

 xvi, 56, pi. 1, f. 3 (lar.); Andre, 

 Species, i, 101 ; pi. xiii, f. 8 (lar.), 

 Cat., 12,* 3. 



Black, shining, slightly pubescent; mesopleura opaque; mouth 

 black; palpi pale. Abdomen red, black at the base ; the seventh, at the 

 sides, and eighth, with the cerci of the same colour. Legs : the anterior 

 femora black, the apex light reddish, intermediate black ; the knees 

 reddish, the posterior black above, bright red on the under surface ; 

 anterior tibiae white; middle pair with the basal half white; apical 

 half black above, red beneath ; posterior white at the base, and the apical 



