NEW SPIDER WASPS — DREISBACH 187 



II. SOUTH AMERICAN SPECIES 

 (Species 57-81) 

 Key to Species from South America 



FEMALES 



1. Basal segment of abdomen yellowish or the whole abdomen red or yellow . 2 

 Neither the basal segment of abdomen, nor the whole abdomen red or 



yellow 4 



2. Only basal segment of abdomen yellowish; legs yellowish except tips of tarsi 



and forecoxae. Ecuador mendicus (Banks) 



The whole abdomen yellowish or reddish; coxae and rest of legs rufous or 

 yellowish, except apical tarsal joints may be black 3 



3. Whole abdomen reddish; coxae and rest of legs same color except last tarsal 



joint of forelegs and the last three joints of last two pairs are blackish; 

 abdomen and head bluish green with purple reflection; a strong hair brush 

 on mentum, but not a strong pygidial area; antennae yellowish below, 



brown above. Amazon 79. pygidialis, new species 



The whole abdomen a slightly lighter reddish; legs as in 'pygidialis except 

 only apical tarsal joint blackish; the whole head except ocellar triangle 

 yellow; the whole thorax yellow, except a streak across the neck, most of 

 dorsum of mesonotum and propodeum and postscutellum are black; scutel- 

 lum is mostly yellowish; pygidial area shghtly stronger than above; an- 

 tennae yellow above and below on the first four and a half joints. Amazon, 



58. ferrugineus, new species 



4. Head, thorax, or propodeum bluish or greenish 5 



Neither head, thorax or propodeum greenish or bluish 25 



5. Clypeus yellowish with a black spot in middle the yellowish extending up 



each side 6 



Clypeus black or apical half dull reddish 13 



6. Legs with the femora reddish or yellowish, often patches of pale hairs on 



hind corners of propodeum 7 



Legs wholly black; propodeum usually striate all over 10 



7. Propodeum minutely striate across middle base, coarsely punctate behind; 



a distinct median furrow; midtibia pale, basal segment of abdomen plainly 



hairy above. British Guiana, Brazil tarsatus (Smith) 



Propodeum at middle base not striate across; median furrow not so distinct 

 or none 8 



8. Appressed pubescence of head and thorax rather dull yellowish, not snow 



white; head and thorax usually greenish; all femora and tibiae yellowish. 



Colombia viridis (Smith) 



Appressed pubescence is snow white 9 



9. Front femora largely black and tibiae partly so, abdomen bluish to violet; 



middle and hind femora black at one end; both recurrent veins end before 



middle of cell. British Guiana wheeleri (Banks) 



Front femora and tibiae wholly yellowish; propodeum punctate behind. 



Brazil, British Guiana, Trinidad femoratus (Fabricius) 



10. Very hairy, long white hair on clypeus and front, on propodeum behind and 

 on first segment of abdomen above and below; wings rather smoky, not 

 black; abdomen black, thorax broad. Colombia, Ecuador. 



robustus (Banks) 



