[67] Ninth Report of the State Entomologist 407 



LACHNUS. ILLIG. 



Spruce-tkee Lacunus, *i. abietis. Apterous females pubescent, 

 broad oval, blackish clouded with lurid brown, Avith a faint 

 cinereous dorsal vitta ; venter lurid, pruinose, with a black 

 spot near the tip ; antennae sordid- white, with a black annu- 

 lus at the apex of each joint. Length, 0-15 to tip of the 

 abdomen. Occurs on the Abies nigra. No. 854, female. 



Oak-leaf Lachnus, *Z, quercifolice. Light yellow; antennae pellucid 

 white, with a slender black annulus at the tip of each joint; 

 fore wings with a blackish spot on the apex of each nerve and 

 a deep black dot on the base of the curved apical nerve; 

 stigma whitish. Length to tip of wings, 0-15. On the leaves 

 of the white oak. No. 855, male. 



Willow Lachnus, *L. salicellis. Black; tibijv and baee of the 

 antenna? obscure pallid; base and costal margin of the fore 

 wings yellowish-white. Length, 0-08. On the young succu- 

 lent twigs of willow trees. No. 856, male. 



Alder-leaf Lachnus, *i. alnifolim. Apple-green; antennsB 

 greenish-white, with four black annuli; legs greenish-white, 

 tarsi, knees, and line on the posterior side of the tibia? black; 

 wings hyaline, the three oblique nerves black. Length, 0-10. 

 On alder leaves. No. 857, male. 



^' Elm Lachnus, L. ulmi, (Linn.) Syst. Nat. ii. 733. Solitary, on 

 the under side of elm leaves. No. 858, male. 



'^- Poplar Lachnus, X. populi, (Linn.) Syst. Nat. ii. 736. On the 

 under side of the young leaves of Pojndus grandidentata. 

 No. 859, male; 860, larva. 



ERI050MA. Leach. 



^•^Apple-tree Blight, E. lanigera, (Hausman.) Illiger's Magan. 

 vol. i. p. 440. Myzoxylus rnali, (Blot.) Mem. Soe. Agricult. 

 de Caen, 1830, p. 38. On the bark of young branches of the 

 apple, to which tree, in Europe, it has been a great pest. 

 Commonly only solitary individuals are here found, and in 

 but one instance, have I met with it clustered and covering a 

 limb as described by foreign writers. No. 861, male. 



