NO. 3568 MELANOTUS — QUATE AND THOMPSON 57 



36. Melanotus concisus Kniill 



Figures 7a, 12a 

 Melanotus concisus Knull, 1959, p. 281. 



Male (after Knull). — Body color dark brown, legs lighter, vestiture 

 short. 



Head: Frontal margin broadly rounded, projecting over nasale; 

 parantennal fovea deep. Mandible with deep pit. Antenna exceeds 

 tip of hind angle by part of 1 segment; segment 3 subequal to 2, 



Pronotum little longer than wide; punctures dense, coarse, umbili- 

 cate on anterior two-thirds, fine and sparse on posterior one-third; 

 sides of pronotum rounded. Genitalia as figured; paramere with 

 apical blade. 



Female (?). — Frontal margin nearly straight across center, projects 

 in front of nasale by width of rim; nasale poorly developed, paran- 

 tennal fovea shallow but definite. Antenna fails to reach tip of 

 hind angle by about 1 segment. Pronotum wider than long. Geni- 

 taha as figured; bursa with dense patch of pointed plaquelike spines, 

 accessory gland originates near apex of bursa. 



Elytron: 6.1 mm (5.8-6.3). 5 spec. 



Type.— Holotype : Male, Ai-tesia (Eddy Co.), N. Mex. (Knull 

 Collection). 



Distribution. — Arizona and New Mexico. 



Arizona: Cochise, Santa Cruz; August. New Mexico: Sandoval; August. 



The above females agree reasonably well with the male described 

 by Knull and tentatively we are assigning them to concisus. The 

 small third antennal segment, large pronotal punctures, small size, 

 and distribution are the main recognition characters of the species, 

 aside from the genitaha. Positive identification of the female cannot 

 be made, however, until associated with male in the field. 



37. Melanotus lanceatus Quate, new species 



Figures 7c, 12b 



Male. — Body color reddish to dark reddish brown, covered with 

 white vestiture evenly distributed over body. 



Head: Front with pair of shallow anterolateral or no depressions, 

 margin scarcely protruding in front of nasale, angulate and flattened 

 in center when viewed from above; parantennal fovea moderately 

 large, deep and circular, or semicircular; nasale protuberant, as wide 

 as or wider than high. Mandible with slit-shaped or teardrop- 

 shaped slit. Antenna reddish brown, exceeds tip of hind angle b}^ 

 2-3 segments; segment 3 intermediate in size between 2 and 4; erect 

 male hairs short but dense. 



