Stenopodainae

Blinn, Robert L., 2012, Arenaeocoris enervatus (Hemiptera: Heteroptera: Reduviidae: Stenopodainae), a new genus and species from the Southeastern United States, Zootaxa 3478, pp. 105-110 : 109

Key to the Stenopodainae Genera of America North of Mexico

1. Apex of 1st antennal segment extended beyond origin of 2nd; femora and tibiae of 1st leg armed with long slender spines................................................................................................ Pnirontis Stål

- Apex of 1st antennal segment not extended beyond origin of 2nd; femora unarmed or with only short acute tubercles on ventral side, tibiae unarmed................................................................................... 2

2. Prosternum elongate behind fore coxae, as long as, or shorter than, coxae.......................... Ctenotrachelus Stål

- Prosternum shorter behind coxae, or coxae inserted at hind margin of prosternum.................................. 3

3. Head ventro-laterally behind eyes armed with large globular setigerous spines often ramose or forked................... 4

- Head ventro-laterally behind eyes unarmed or with simple smaller setigerous spines................................ 6

4. Genae anteriorly produced, extending in front of head; anterior femora incrassate armed with short stout spines along ventral margin; body devoid of setigerous spines..................................................... Gnathobleda Stål

- Genae not produced; anterior femora slender, without spines along ventral margin.................................. 5

5. First rostral segment nearly twice as long as 2nd and 3rd combined; body, except ventrally on head, devoid of setigerous spines; juga not porrect; ocelli small, not placed on elevated tubercle................................... Pygolampis Germar

- First rostral segment subequal to 2nd segment; body, especially head and prothorax densely covered with setigerous spines; juga porrect; ocelli large, placed on median tubercle and elevated above level of anterior part of head...... Arenaeocoris n. gen.

6. Prothorax with four elevated longitudinal carinae, each set with a single row of setigerous spines........ Stenopoda Leporte

- Prothorax without elevated spine carinae................................................................... 7

7. Juga porrect, extending between the 1st antennal segment; ocelli smaller, placed on smaller tubercle, elevated just slightly above level of anterior part of head; head not narrowed posteriorly into narrow neck...................... Diaditus Stål

- Juga poorly developed, not extending between 1st antennal segment; ocelli large, placed on median turbercle and elevated above level of anterior part of head; head narrowed posteriorly into narrow neck................................... 8

8. Profemora incrassate, armed with short stout spines along ventral margin, metatibiae setae declivent except at distal 1/4.......................................................................................... Oncocephalus Klug

- Profemora slender, devoid of short stout spines ventrally, metatibiae setae clothed in long setae standing perpendicular to tibial surface over entire length..................................................................... Narvesus Stål