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g. Spines long, strongly divergent; membrane mottled; 
body robust, elongate l.tristis Champ. 
gg. Spines shorter and feebly divergent, widely sepa- 
rated at base; membrane spotted or unicolorous; 
body rather short S.immundus Berg. 
ff. Apical margin of terminal genital segment not toothed 
or angulate at sides above insertion of claspers. 
g. Spines very long, acuminate and divergent; elytra 
moderately long, corium and membrane dark; body 
robust 9. longispinis Champ. 
gg. Spines much shorter, divergent; elytra much longer 
than abdomen with basal nervures yellow 
10. moestus Stal 
dd. Membrane hyaline, only the base dark, corium blackish, 
nervures partly or entirely pale; abdominal margin emarginate 
(as in No. 7) ll.venosus Stal 
bb. Female with outer apical angles of first genital segment defiexed and 
not forming a continuous outline with the corinexival margin; male 
with apex of last genital segment produced into a short process in 
the center and armed with tw,o spines. (Herega Am. et S.) 
c. Male with two genital spines upwardly curved and obliquely di- 
vergent. 
d. Pronotum partly rufous-; basal margin narrowly pale; abdo- 
minal margins at most very narrowly pale 12. spissipes Say 
dd. Pronotum black with reddish or pale basal margin; abdominal 
margins more broadly pale; corium dark red 
13. crassipes Fabr. 
cc. Male with the two genital spines horizontal, short and stout, 
. laterally extended; venter flavous. 
d. Large, brightly colored species, with ventral segments nar- 
rowly black 14. flaviventris H.-Sch. 
dd. Smaller species with broader black bands on ventral segments 
15. pictipes H.-Sch. 
1. Apiomekus burmeisteri Guer. from Cuba, is nowhere described by Stal. 
2. A. RUFiPENNis Fallou cannot be identified from his description as only 
color is mentioned and the variation makes that valueless in this genus. It is 
probably a variety of A. crassipes or spissipes. (Champion, 296). 
3. A. ELATUS Stal. Mexico and Costa Rica. 
4. A. REPLETus Uhler i=occidentalis Glover) is found in the western United 
States and Mexico. The above characters are from specimens at Iowa State 
College collected in Vera Cruz, Mexico. 
5. A. VENTRALis Say (355) is recorded by Say and Uhler from Missouri, 
Nebraska and westward to California. Three specimens at Iowa State College 
gave the characters used in the key. The two females agree with each other in 
genitalia but only one of the three, a male, answers Say’s color description. 
6. A. suBPiCEus Stal. Mexico. 
7. A. TRiSTis Champion. Mexico. 
8. A. iMMUNDUs Berg. Mexico. 
9. A. LONGISPINIS Champion. Mexico. 
