156 Maine Agricultural Experiment Station. 1918. 



ALTICA CORXI. SP. X.. THE DOGWOOD FLEA- 

 BEETLE. 

 Technical Description- of the Stages, 

 description of the adult. 



\ ery elongate oval, somewhat convex ; body above shining black with 

 strong greenish or purplish metallic reflections ; antennae black with 

 purplish or greenish reflections, especially the proximal segment : nearly 

 if not quite three-fifths the length of the bod}-, and more than twice the 

 width of the pro thorax at its base : segments 2. 3, and 4 gradually in- 

 creasing in length : segment 4 two and one-half times as long as wide ; 

 segment 10 not more than twice as long as wide, usually less ; eyes 

 black, not prominent, their width as seen from the front less than one- 

 half the interocular distance; frontal carina moderately prominent, acute; 

 frontal tubercles moderately large, flat, almost contiguous: vertex not 

 punctuate : width of head across eyes more than two-thirds but less than 

 four-fifths that of the prothorax at its widest point. 



Prothorax one-half wider than long: margin well defined: base 

 scarcely wider than the apex, regularly arcuate ; sides nearly parallel at 

 the base, convergent at the apex ; basal angles prominent slightly denti- 

 form : apical angles obliquely truncate ; surface comparatively finely 

 punctate, but quite densely punctate; antebasal groove well defined and 

 entire. 



Elytra (across umbones) about one-third wider than the base of the 

 prothorax ; each elytron from two and one-half to three times as long 

 as wide, and from two to two and one-half times as long as the width 

 of the base of the prothorax ; surface alutaceous, comparative!}- coarsely 

 but densely punctate: humeral angles obtuse, more or less rounded; umbo 

 slightly prominent; post-humeral impression faint. 



Scutellum metallic black, like the elytra, sparsely punctate. 



Body beneath shining metallic black: abdomen quite densely beset 

 with fine white setae ; legs black ; the claws red brown, the setae and 

 pulvilli white. 



Length 3.5 mm. -4 mm. 



Last ventral segment of male sinuate each side; lateral lobes com- 

 paratively large ; median lobe short, semicircular, flat, the extreme edge 

 sometimes reflexed. 



Type locality, Orono, Maine : male designated as type deposited in 

 the collection of the Maine Agricultural Experiment Station. Orono, 

 Maine. Paratypes (which are also topotypes) deposited in the collection 

 of the Maine Agricultural Experiment Station, Orono, Maine : of Cor- 

 nell University, Ithaca, Xew York : and of the United States National 

 Museum, Washington, D. C. 



Figures. The last ventral segment of the male is shown in figure 



he. 



