66 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Elytron: 3.6±0.2 mm (3.0-4.3). 50 spec. 

 Types. — 'Type of insipiens: Specimens lost. 



Lectotype of tenellus: Female, "Amer. Sept." (ZM). Lectotype 

 selected by Quate in 1960. 



Distribution.^ — New Jersey to Florida, west to Texas. 



Alabama: Mobile; June. Arkansas: Hempstead; June. Florida: Columbia, 

 Pinellas, Osceola, Volusia, Wakulla; April, May. Georgia: Charlton, Houston; 

 May. New Jersey: Burlington, July. North Carolina: Bladen, Johnston, 

 Lenoir, Moore, Pender, Richmond, Sampson, Wake, Wayne; May, July. South 

 Carolina: Florence; January. Texas: Harrison; May. 



The small size is usually sufficient to separate insipiens from other 

 North American Melanotus. It might be confused with americanus, 

 but in that species the pronotal punctm'es are much smaller and 

 sparser. M. angustatus and prasinus are also small species of the 

 americanus group, but they are larger than insipiens and have con- 

 spicuously different genitalia. 



43. Melanotus leonardi (LeConte) 



Figures Ik, 12h, i 



Cratonychus Leonardi LeConte, 1853, p. 475. 



Melanotus leonardi. — Candfeze, 1860, p. 349. — Thomas, 1941, p. 259.— Dietrich, 

 1945, p. 56.— Fattig, 1951, p. 20. 



Male. — Head, anterior border of pronotum, elytron, abdomen, and 

 venter black, antenna and legs dark reddish brown and pronotum 

 orange colored. 



Head: Front usually with marked, anterior depression; margin 

 scarcely protuberant in front of nasale, rounded or broadly flattened 

 across center when viewed from above; nasale flat, parantennal fovea 

 absent or very shallowly indicated. Mandible without pit. Antenna 

 extends to or beyond tip of hind angle by 1 segment, segment 3 small, 

 little larger than 2, but much smaller than 4; erect male hairs short 

 but dense enough to be seen easUy. 



Pronotum wider than long, ratio of width/length =1.1-1. 2; punctures 

 equal or subequal to those on front, central ones separated by distance 

 equal to about own diameter; sides of pronotum evenly rounded \N'ith 

 marked concavity at base of hind angles; hind angles divergent; carina 

 weak, barely extending to hind angle base. Genitalia as figured, apical 

 blade very small. 



Elytron: 6.6 mm (5.9-7.3). 16 spec. 



Female. — Antenna extends about to tip of hind angle, segment 3 

 intermediate in size between 2 and 4; internal genitalia as figured, 

 bursa with small cluster of spikelike spines, accessory gland short and 

 thicker than duct, spermathecal duct branches at about basal one- 

 third. 



