Baeus, Haliday, 1833

Margaría, Cecilia B., Loiácono, Marta S. & Gonzaga, Marcelo O., 2006, Two new species of Baeus (Hymenoptera: Scelionidae) from South- eastern Brazil parasitoids of Anelosimus (Araneae: Theridiidae), Zootaxa 1162, pp. 45-52 : 51

Key to Neotropical species of Baeus

1. Body color black ........................................................................................................... 2

1’. Body color yellow, yellow­ochraceous or walnut ......................................................... 3

2. Head and tarsi dull honey yellow. A 2 <A 3 ­A 6, male black with antenna and legs (except coxae) yellow .............................................................. Baeus auraticeps Girault

2’. Head black, first coxae walnut brown, second and third coxae brownish yellow, antennal club yellowish, A 2>A 3 ­A 6, male with legs yellowish ......... Baeus achaearaneus Loiácono

3. Antennal club> 2 times longer than wide..................................................................... 4

3’. Antennal club <2 times longer than wide..................................................................... 5

4. Antennal club 2.91 times longer than wide. Body color walnut, antennae, trochanters, apex of tibiae and first four tarsomeres lighter ...................... Baeus platensis (Brèthes)

4’. Antennal club 2.14 times longer than wide. Body color walnut brown, antennae and legs yellowish .................................................. Baeus metazygiae Loiácono et Margaría

5. Head 1.79 times wider than mesosoma. Body and appendages yellow, with conspicuous pilosity. A 2 1.33 times longer than wide. Antennal club compact with traces of segmentation, 1.4 times longer than wide....................................................................... ............................................................. Baeus jabaquara Margaría et Loiácono sp. nov.

5´. Head <1.79 times wider than mesosoma. Body color walnut to yellow ochraceous, with normal pilosity. Antennal club 1.70 to 2.30 times longer than wide .................... 6

6. Antennal club: A 2 ­A 6 1.80 times longer than wide. Antennal club subcompact; A 2 1.83 times longer than wide. Head 1.60 times wider than mesosoma. Body and appendages yellow ochraceous. ............................ Baeus anelosimus Margaría et Loiácono sp. nov.

6’. Antennal club: A 2 ­A 6 1.24 times longer than wide; antennal club compact. Head 1.22 times wider than mesosoma. Head, thorax and vertex walnut brown; antennal club and legs cinnamon buff to cinnamon and ochraceous tawny .......... Baeus latrodecti Dozier