CICADELLOIDAE — EUSCELIDAE 1519 



[Laevicephalus'] ferratus De Long and Caldwell 1937c: 32 

 [Catalogued] ^ 



[Laevicephalus] ferratus De Long and Knull 1946a: 40 

 [Catalogued] ^ 



[Psammotettix] ferratus Oman 1947b : 62 Equals [Laevi- 

 cephalus ferratus De L. and Dav.] 



[Psammotettix'] ferratus De Long 1948a : 258 [Key] : 259 ; 

 figs. 388A-B [Described, illustrated, ecology, catalogued] 

 1' 2 Equals Laevicephalus ferratus De L. and Dav. 



[Psammotettix] ferratus Oman 1949a: 162 [Catalogued] ^ 

 Equals Laevicephalus [ferratus De L. and Dav.] 



Psammotettix ferratus Knull 1954c: 56; figs. 3, 4 [Illus- 

 trated] 



Localities : ^ Pennsylvania. - Illinois. ■' Northeastern States. 



flavipennis Scott. See Psa7mnotettix striatiis var. flavipennis Scott. 



frigidus Bohemari 



Deltocephalus frigidus Boheman 1845b: 156 [n. sp.] ^ 

 Deltocephalus frigidus Boheman 1845a : 25 [Described, cata- 

 logued] 1 

 [Jassus] (D[eltocephalus]) frigidus Flor 1861a: 224, 230 

 [Key] : 244 [Described, catalogued] ^' ^ Equals Delto- 

 cephalus [frigidus] Boh. : 246 [Comparative note] 

 J[assus] frigidus Flor 1861a : 247, 260 [Comparative notes] 

 D[eltocephalus] frigidus Flor 1861a: 262 [Comparative note] 

 D[eltocephalus] frigidus Fieber 1869a: 212 [Comparative 



note] : 213 ; pi. V, fig. 33 [Key, illustrated, catalogued] ^ 

 Jassus frigidus Thomson 1869a: 72 To J[assus] lividellus 



[error] 

 Deltocephalus frigidus Thomson 1869a: 72 To J[assus] livi- 

 dellus [error] 

 [Deltocephalus] frigidus Dallas 1870a : 495 [Listed] 

 D[eltocephalus] frigidus BrischkelSllsi: 15 [Listed] ^ 

 Jassus (Deltocephalus) [frigidus] Sahlberg 1871a: 324 To 



D [eltocephalus] lividellus Zett. [error] 

 Deltocephalus frigidus Sahlberg 1871a: 324 To D[elto- 



cephalus] lividellus Zett. [error] 

 [Deltocephalus] frigidus Fieber 1872a: 13 To [Deltoceph- 

 alus] lividellus Zett. [error] 

 J[assus (Deltocephalus)] frigidus Raddsitz ISlia.: 92 [Ecol- 

 ogy] ' 

 [Deltocephalus] frigidus Puton 1875a: 143 To [Deltoceplt- 

 alus] lividellus Zett. [error] 



