TACIIINUS. 239 



1. Elytra witli light markings ; antennae })itcli- 

 black, with first joint red-yellow. 



A A. Markings on elytra red-brown ; body 

 broader. 



Pitch-black ; sides and base of thorax, a narrow streak 

 along outer margin of elytra (usually indistinct behind) and 

 their apical margin, base of antennae and legs red-brown. 

 Penultimate dorsal abdominal segment of male ending in 

 four short teeth, central pair distinctly longer than lateral 

 ones ; of female ending in four rather long teeth, outer pair 

 stronger but scarcely longer than inner. L. If — 2 1. 

 Eather common. T. laticollis, Gr. 



H jB. Markings on elytra yellowish-brown ; l)ody 

 narrower. 



Similar to T. laticollis, but less convex, the light mark- 

 ings on thorax and elytra yellowish-brown, lateral streak 

 on latter distinct. Division between central pair of teeth 

 on penultimate dorsal abdominal segment of male oidy half 

 as wide as in that species ; outer pair of teeth in female 

 stronger and longer than inner. L. Ih 1. Common. 



T. marginellus, Pab. 



2. Elytra unicolorous pitch-black ; antennae uni- 

 colorous red. 



Kather convex. Pitch-black ; sides of thorax brown-red ; 

 antennae and legs red. Penultimate dorsal abdominal seg- 

 ment of male ending in four short teeth, central pair longer ; 

 of female ending in four equally long and narrow teeth. 

 L. li 1. Moderately common. T. col I avis, Gr. 



b. Elytra red, apical margin blackish. 



Black ; elytra as above; first four joints of antennae red- 

 brown ; legs pitch-black, tarsi red-brown. Elytra strongly 

 punctured. L. 3 1. Very rare. T. rufipennis, Gyll. 



JB. Elytra partly inipunctate, partly punctured in rows. 



Elongate. Pitch-black; apical margin of elytra pitch- 

 brown; antennae and legs dark-red. L. 3| — 4 1. Not 

 common. T. elongatus, Gyll. 



Meffa cronus, 



A» Thorax red. 



