ART. 12 MEGACHILID BEES FEOM BOLIVIA COCKEEELL 



KEY TO SPECIES BELONGING TO, OK RESEMBLING, ANTHODIOCTES 



Scutellum entirely black; ventral scopa white or whitish 1. 



Scutellum all or partly yellow .. 7. 



1. Wings fulvous or ferruginous basally, fuliginous or dark apically 2. 



Wings not fulvous basally, but usually strongly infuscated, especially in 



upper part 3. 



2. 10 mm. long; with fulvous hair; male clypeus with a reversed T in yellow; 



female face dark, its abdomen with four yellow bands (Brazil) 



nectarinioides (Schrottky). 

 7 to 8 mm. long; without fulvous hair; male clypeus orange-yellow; female 



face dark except obscure lines along orbits, and second segment with no 



yellow band (Argentina) megachiloides (Holmberg). 



(D. portoi nigritulum Friese might perhaps be sought in this couplet, near to 



D. nectarinioides, but it is smaller, the mandibles with a basal tooth.) 



3. Third abdominal segment with only linear lateral spots; smaller than D. 



psaenythioides (7 mm. or a little over, psaenythioides 9 mm.) (Paraguay) 



vernoniae Schrottky. 

 Third abdominal segment with an orange-yellow band 4. 



4. Middle of face polished and impunctate manni, new species. 



Face densely punctured 5. 



5. Male; clypeus black with a broadly interrupted yellow band on lower margin, 



sometimes reduced to a pair of small spots mapirense, new species. 



Female; clypeus entirely black, or (holmhergi) very obscurely spotted 6. 



6. Tegulae black; sixtli abdominal tergite with a broad yellow band 



holmbergi, new species. 

 Tegulae with a light spot; sixth abdominal tsrgite with Uttle yellow (Prov- 

 ince Salta, Argentina psaenythioides (Holmberg). 



7. Ventral scopa yellow or j^ellowish (antennae yellow in male D. buyssoni the 



female of which is unknown) 8. 



Ventral scopa white (or male only known) 10. 



8. Scape (female) red beneath; male with margin of clypeus yellow (Brazil; 



said by Ducke to be identical with D. lunatum Smith) duckei (Friese). 



Scape (female) black, or red only at exteme base 9. 



9. Abdominal segments 1 and 2 all black (Brazil) albopilosum (Friese). 



Abdominal segments 1 and 2 with a yellow line on each side (Brazil) 



lunatum (Smith) . 



10. Very small, about 5 mm. long, or (D. quadrimaculatum) somewhat larger. _ 11. 

 Larger, 7 mm. or over (except D. indescriptum, 6.5 mm., but differs from 



pygmaeum, arenarium, and quadrimaculatum by abdominal segments 1 to 

 3 all dark) 13. 



11. Head and thorax less coarsely punctured (Brazil; seen in British Museum, 



and noted Dianthidium venation and pul villi present). .arenarium (Ducke). 

 Head and thorax more coarsely punctured 12. 



12. Anterior and middle legs of female red (Brazil) pygmaeum (Friese). 



Anterior and middle legs of female with much black; female with lower part 



of clj'peus not yellow, and scape clear red in front; male clypeus yellow, 



space between antennae black quadrimaculatum, new species. 



Male; legs black and yellow; clypeus yellow; two large curved yellow stripes 

 between antennae callorhinum, new species. 



13. Female mandibles with a stout basal tooth; clypeus with a little tooth (Brazil) 



portoi (Friese) . 

 Female mandibles unarmed at base 14 



