NO. 3668 MELANOTUS — QUATE AND THOMPSON 35 



Melanotus divarcarinus Blatchley, 1910, p. 754. — Thomas, 1941, p. 259. — Dietrich, 

 1945, p. 56.— Severin, 1949, p. 16.— Deen and Cuthbert, 1955, p. 193. 

 [New synonymy.] 



Melanotus lixus Blatchley, 1910, p. 754. [New synonymy.] 



Male. — Body color dark reddish brown, covered with white or 

 yellow hairs evenly distributed over body. 



Head: Front with pair of shallow anterolateral depressions not 

 strongly protuberant above clypeus, evenly rounded or a little angu- 

 late and flattened when viewed from above, parantennal fovea 

 crescent shaped, small, but moderately deep and well defined; nasale 

 obsolescent. Mandible -vvdth shallow, slitlike pit. Antenna exceeds 

 tip of hind angle by 1 to 1,^ segments; reddish bro\vn, ratio of seg- 

 ments 2:3:4=3:5:6, segment 4 about twice as long as maximum 

 width; erect male hairs short but dense. 



Pronotum wider than long; punctures at center usually separated 

 by distance equal to Uttle less or little more than own diameter, 

 equal to or little smaller than those on front; sides of pronotum straight 

 behind small anterior curvature, divergent posteriorly; hind angles 

 subparallel, strong carina extending cephalad of base of hind angle 

 Genitalia as figured; paramere without apical blade. 



Elytron: 8.7±0.6 mm (6.5-10.2). 85 spec. 



Female. — Similar to male. Pronotum with sides often more 

 strongly divergent; antenna exceeds pronotum by ^-1 segment; 

 internal genitalia as figured, bursa long and coiled in loop, with 

 scattered, peghke spines nearly throughout entire length, accessory 

 gland originates near base, clavate, spermathecal duct branches near 

 base. 



Elytron: 9.3 ±0.7 mm (8.2-10.2). 44 spec. 



Types. — Lectotype of depressus: Male, labelled with red label 

 "PA." (MCZ). First species of type series selected as lectotype by 

 authors in 1962. 



Lectotype of parumpunctatus: Female, labelled with red label 

 "Pa." (MCZ). First specimen of type series selected as lectotype by 

 authors in 1962. Second specimen is ignobilis. 



Holotype of divarcarinus: Male, Posey Co., Ind., June 2, 1909, 

 W. S. B. (PU). 



Holotype of lixus: Female, Posey Co., Ind., July 6, 1912, W. S. B. 

 (PU). 



Distribution. — Connecticut to North Carohna, west to Nebraska 

 and Texas. 



Arkansas: Benton, Hempstead, Pike, Washington; May, July. Connecti- 

 cut: Fairfield, New Hampshire; June. Georgia: Catoosa, Fulton, Gwinnett, 

 Lumpkin, Moran, White, Worth; May, July. Illinois: Champaign, Clay, 

 Jackson, Johnson, Kane, Marion, McLean, Peoria, Pope, Putnam, Rock Island, 



221-532 — 67 i 



