187 



Larvae elongatae, depressae, mandibulis validis, 



1. Ligniperda: fusco-cinereus; alls albo-cinereis, 

 fusco - nebulosis, strigis Iransversis, nigris 

 anastomosanlibus, collari margine ocbraceo; 

 ihorace postice fascia atra; segmenlis abdo- 

 minis apice albidis. — Long. al. exp. <^ 68 

 —70. ? 80—82 millim. 



Bomhyx Cossus. Linn. Syst. Na t. I. II. 827. 63. — 

 Faun, Suec. 295. 1114. — Roesel. Ins. Bel. L 

 CL 2. T. XVIII. — De Geer. II. 1. p. 368. 1. — 

 Haworth Lep. Br, I. 89. 14. — Hubn. Bomb. 

 T. 46. f. 198. ?. 



Cossus Ligniperda. Fabr. En t. Syst. III. 2. 3. 1. — 

 OcHs. Schm. v. E. III. 90. 1. — Boisd. Gen. et 

 Ind. metli. p. 75. 602. — Godart. Lep. IV. p. 

 47 T. III. f. 1. 



Habitat in Suecia media et meridionali, imago 

 rarior, larva baud infiequens, praesertim versus 

 finem aestatis. 



Larva biennis, depressa, nitida, pilis raris 

 sparsis; junior sanguinea, capite nigro, adulta 

 3 — 4 uncialis, sublus livida, supra sanguinea, 

 capite maculaque collari nigris, Hab. in ligno 

 subputrido arborum variorum ut Quercus, Salicis, 

 Populi, Aini etc. saepe gregaria. Inquietata liquo- 

 rem acrem exspuit. Pupa elongata, antice castanea, 

 poslice flavescens, segmentis plicatis, aculeatis, 

 folliculo elongato, tenaci, rasura ligni intertexto. 

 Insecto excluso pupa ad dimidium e folliculo ex- 

 tracta in venitur. 



Larvae et pupae recentes proprium spargunt 

 odorera. 



Genus XXIX. Zeuzerä. Latr. Boisd. 



Cossus. OcHS. Fabr. 



Antennae longitudine tboracis; maris subtus 

 dimidiato-pectinatae, apice simplici, setiforini; 



