1 Males........................................................................................................................................................................... 2
- Females....................................................................................................................................................................... 26
2 Gradulus of T 6 produced as spine-like processes on each side.................................................................................. 3
- Gradulus of T 6 not as above....................................................................................................................................... 8
3 F 1 longer than F 2; paraocular area yellow; clypeus uniformly yellow; labrum black; hind femur with a spine-like process at midlength; hind basitarsus strongly modified................................................................... Eucerinoda gayi
- F 1 shorter than F 2; paraocular area black; clypeus yellow with black spots; labrum yellow; hind legs unmodified 4
4 S 6 without posteriorly convergent carinae................................................................................ Melissodes ecuadoria
- S 6 with posteriorly convergent carinae...................................................................................................................... 5
5 Prestigma clearly longer than pterostigma....................................................................................... Svastra flavitarsis
- Prestigma almost as long as the pterostigma (genus Melissoptila)............................................................................ 6
6 Apex of F 10 modified; F 11 laterally compressed; middle and hind legs strongly modified. Melissoptila tandilensis
- F 10 and F 11 unmodified (uniformly cylindrical); middle and hind legs unmodified.................................................. 7
7 Clypeal disc relatively flat; ocellocular area with dense pilosity, covering the integument; terga with a apical translu- cent band very narrow or absent..................................................................................................... Melissoptila dama
- Clypeal disc uniformly convex; pilosity on ocellocular area not very dense, integument visible beneath hairs; terga with wide apical translucent band................................................................................................ Melissoptila chilena
8 S 6 with posteriorly convergent carinae...................................................................................................................... 9
- S 6 without posteriorly convergent carinae (genus Alloscirtetica)............................................................................ 11
9 Distal margin of the labrum uniformly rounded; antenna not reaching T 2; mandible with subapical tooth................. ....................................................................................................................................................... Peponapis citrullina
- Distal margin of the labrum with a apical cavity; antenna reaching at least T 3; mandibular apex without subapical tooth (genus Svastrides)............................................................................................................................................ 10
10 Basal half of clypeal disc black; T 4 to T 7 without white pilosity................................................ Svastrides melanura
- Clypeal disc completely yellow; T 4 to T 7 with lateral white pilosity .......................................... Svastrides orellanae
11 Clypeal disc yellow or at least with a small spot of that color................................................................................. 12
- Clypeus dark brown or black..................................................................................................................................... 22
12 Labrum with yellow areas......................................................................................................................................... 13
- Labrum black............................................................................................................................................................. 18
13 Labrum with yellow spot and black edges................................................................................................................. 14
- Labrum completely yellow........................................................................................................................................ 15
14 T 2 to T 5 with apical band of white pilosity, widely interrupted in the middle; rest of metasoma with black pilosity. ......................................................................................................................................... Alloscirtetica danuncia n. sp.
- T 2 to T 5 with uninterrupted apical band of white pilosity; rest of metasoma with whitish or yellowish pilosity............................................................................................................................................................. Alloscirtetica cinerea
15 Dorsal pilosity on mesosoma yellow or orange; terga with apical bands of yellow pilosity.. Alloscirtetica weyrauchi
- Dorsal pilosity on mesosoma greyish; metasoma without bands.............................................................................. 16
16 Dorsal pilosity on mesosoma greyish; anterior area of middle ocellus depressed as semicircle................................... ............................................................................................................................................. Alloscirtetica gelida n. sp.
- Dorsal pilosity on mesosoma whitish or yellowish; anterior area of middle ocellus depressed as triangle.............. 17
17 Terga with apical translucent bands; T 2 to T 7 with white and short pilosity............................. Alloscirtetica chilena
- Terga without apical translucent bands; T 2 to T 2 with black pilosity........................................ Alloscirtetica porteri
18 Clypeal disc covered by abundant white pilosity; labrum covered only with white pilosity ............ Alloscirtetica gayi
- Clypeal disc without hairs, pilosity only on the sides; labrum with black pilosity, if there are white hairs, they are scarce......................................................................................................................................................................... 19
19 Frontal area with black pilosity .............................................................................................. Alloscirtetica vagabunda
- Frontal area with white or yellowish pilosity............................................................................................................. 20
20 Frontal area and metasoma with yellow pilosity .......................................................................... Alloscirtetica herbsti
- Frontal area with white pilosity; metasoma with black and white hairs intermixed or forming apical bands on some
terga............................................................................................................................................................................. 21 21 Hind tibiae with white and branched pilosity .................................................................... Alloscirtetica valparadisaea
- Hind tibiae with dark brown and simple pilosity, if branched hairs, they are scarce .............. Alloscirtetica tristrigata
22 Head and legs with whitish or yellowish pilosity ...................................................................... Alloscirtetica frieseana
- Head and legs with dark brown or black pilosity....................................................................................................... 23
23 At least T 3 and T 4 covered by white and long hairs ..................................................................... Alloscirtetica lanosa
- At least T 3 and T 4 with black pilosity....................................................................................................................... 24
24 Clypeal disc with smooth longitudinal line ................................................................................ Alloscirtetica gazullai
- Clypeal disc without longitudinal line........................................................................................................................ 25
25 Gena with white pilosity; antennae orange brown ................................................................... Alloscirtetica antarctica
- Gena with dark brown pilosity; antennae dark brown or black ................................................. Alloscirtetica rufitarsis
26 Gradulus of S 2 uniformly convex ........................................................................................................ Eucerinoda gayi
- Gradulus of S 2 biconvex............................................................................................................................................. 27
27 Clypeus strongly protuberant; hind basitarsus with hairs of inner surface sparse, except for a narrow band of dense hairs near lower margin .................................................................................................................. Peponapis citrullina
- Clypeus not or little protuberant; hind basitarsus with uniform dense pilosity.......................................................... 28
28 Apical half of clypeus yellow............................................................................................................ Svastra flavitarsis
- Clypeus uniformly black............................................................................................................................................. 29
29 Sector of vein r on margin of 2 nd submarginal cell shorter than vein 1 °rm (genus Alloscirtetica)............................. 35
- Sector of vein r on margin of 2 nd submarginal cell longer or equal in length to vein 1 °rm........................................ 30
30 Tibial scopa black (genus Svastrides)......................................................................................................................... 31
- Tibial scopa yellow..................................................................................................................................................... 32
31 T 3 with basal band of white pilosity; T 4 without white pilosity................................................... Svastrides melanura
- T 3 without band of white pilosity; T 4 with a tuft of white pilosity on each side........................ Svastrides orellanae
32 Prestigma clearly longer than the pterostigma; metasoma with black pilosity and basal bands of yellow hairs.......... ..................................................................................................................................................... Melissodes ecuadoria
- Prestigma and pterostigma similar in length; metasoma with black pilosity and with bands of white pilosity or com- pletely covered with yellow pilosity (genus Melissoptila)........................................................................................ 33
33 Metasoma with black pilosity and white bands from T 1 to T 4, widely interrupted on T 1 and T 2................................................................................................................................................................................ Melissoptila tandilensis
- Metasoma covered with yellow pilosity................................................................................................................... 34
34 Base of mandible yellow; tegula and veins yellowish brown......................................................... Melissoptila dama
- base of mandible mahogany; tegula and veins dark brown......................................................... Melissoptila chilena
35 Mesosoma completely covered by dark brown or black pilosity.............................................................................. 36
- mesosoma with black pilosity only on mesepisternum or absent.............................................................................. 39
36 Pronotal lobe with white pilosity; mesoscutum with light brown pilosity........................... Alloscirtetica vagabunda
- Pronotal lobe with black pilosity; mesoscutum with dark brown or black pilosity.................................................... 37
37 F 2 to F 9 black; basis of middle tibiae with tuft of white pilosity.................................................... Alloscirtetica gayi
- F 2 to F 9 orange; middle tibiae completely covered with dark brown or black pilosity........................................... 38
38 Apex of pygidial plate acute; tegulae light brown, almost translucent....................................... Alloscirtetica porteri
- Apex of pygidial plate broadly rounded; tegulae dark brown ...................................................... Alloscirtetica chilena
39 Mesosoma with dorsal pilosity yellowish or orange................................................................................................ 40
- Mesosoma with dorsal pilosity white, brown or gray, at least dorsally.................................................................... 43
40 Head, mesepisternum, legs and metasoma, except T 1 with black pilosity............................ Alloscirtetica antarctica
- Head, mesepisternum, legs and metasoma with whitish or yellowish pilosity.......................................................... 41
41 Base of mandible yellow .............................................................................................................. Alloscirtetica herbsti
- Base of mandible dark brown or black...................................................................................................................... 42
42 Tibial scopa with simple and yellowish pilosity......................................................................... Alloscirtetica cinerea
- Tibial scopa with branched and dark brown pilosity............................................................. Alloscirtetica weyrauchi
43 Tibial scopa with yellowish/ light brown pilosity ............................................................... Alloscirtetica gelida n. sp.
- Tibial scopa with dark brown pilosity...................................................................................................................... 44
44 T 2 to T 4 with apical band of white pilosity (complete or interrupted in the middle of T 2....................................... 45
- T 2 to T 4 without apical band of white pilosity.......................................................................................................... 46
45 Frontal area with white pilosity; T 2 with apical band of white pilosity uninterrupted .......... Alloscirtetica tristrigata
- Frontal area with dark brown or black pilosity, T 2 with apical band of white pilosity widely interrupted in the middle ................................................................................................................................................... Alloscirtetica frieseana
46 Mesepisternum with black pilosity............................................................................................................................ 47
- Mesepisternum with white pilosity............................................................................................................................ 48
47 T 2 completely covered by white pilosity................................................................................... Alloscirtetica gazullai
- T 2 pilosity with black, if white hairs, they are scarce and located only at the basis of terga .... Alloscirtetica rufitarsis
48 T 2 to T 6 with dark brown or black pilosity; apex of tibial spurs strongly curved ....................... Alloscirtetica lanosa
- T 2 to T 6 mostly with white pilosity, with some black hairs intermixed; apex of tibial spurs almost straight............... ........................................................................................................................................... Alloscirtetica valparadisaea