27 



Peritrema ending between coxae 2 



\ and 3 L. saurarum Oudms. 



ï Peritrerna ending above leg 1 . . L. kolenatii Oudms. 

 ■ Peritrema passing coxa 1. . . .8 



ICoxa 2 with one spine forward, one 

 backward; coxa 3 with 2 spines 

 \ backward and one outward . . L. albatus (C. L. Koch). 

 I Coxa 2 with one spine forward; 

 l coxa 3 with 2 spines backward L. albato-ajjinis Oudms. 



Females. 



| Two dorsal shields L. musculi (C. L. Koch). 



! One dorsal shield 2 



f Sternal shield present 3 



| No sternal shield more . . . . L. uncinatus (Can.) 



I Sternal shield trapezoidal .... 4 



1 Sternal shield linear L. sylviarum (C. et Fanz). 



!Legs 1 and 2 thick and short; femur 

 1 and 2 dorsally with 2 spines each L. spinosus Oudms. 

 Legs 1 and 2 not so thick ... 5 

 Dorsal shield wide, occasionally and 



esp. post. surrounded by narrow 



unprotected margin 6 



Dors. shield narrow ; surrounded by 



hairy unprotected skin . . . .10 

 Coxa 2 with 2 spines, one forward, 



one backward; coxa 3 with 2 



spines backward L. albatus (C. L. Koch). 



Coxa 2 with 1 spine forward . . 7 

 Body and dors. shield broad; palp 



without appendage 8 



Body aod dors. shield elongate ; palp 



with app. ventr. of joint 1 . .9 

 Dors. shield post. with sinuation 



inward L. albato-ajinis Oudms. 



Dors. shield post. rounded . . . L.corethroproctus Oudms. 



