HALICTINES

Cockerell, T. D. A., 1942, Halictine Bees from Rota Island, Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 191-194 : 192-193

KEY TO HALICTINES OF PACIFIC ISLANDS

A. Abdomen black, or not at all metallic, or very slightly so (H. samoae, H. se111ic:yane 1ts ....... ... ... ... .... ..

.

B. Abdomen distinctly, or very faintly metallic (H. samoae, H. semic:yaneus).............. 5

1. Head and thorax black, not metallic ( New Caledonia)............ H. polygoni Cockerell.

Thorax brilliantly metallic.................................................................................................... 2

2. Head greatly elongated ( Samoa).............................. H. samoae Perkins and Cheesman.

Headbrown..............................

.

3. Anterior femora and tibiae clear red; small species with purple mesonotum ( Samoa) ....................................................Echthralictusextraordinarius(Kohl),male.

Anterior femora dark.............................................................................................................. 4

4. Mesonotum and scutellum very rich purple ( Samoa).............. H. mackieae Cockerell.

Mesonotum and scutellum green, metathorax blue ( Samoa).................................... TODO TODO TODO

~. Head greatly elongated; mesonotum brilliant blue green ( Samoa)........................ TODO TODO TODO TODO TODO

Headordinary................................

.

6. Legs clear red, including femora........................................................................................ 7

Femora not thus red................................................................................................................ 8

7. First two abdominal tergites entirely green ( Samoa).... H. perpessicius Kohl, male.

First two tergites black at base, with broad green hind borders ( Samoa)............ TODO TODO TODO TODO

8. Thorax entirely brilliant shining purple blue ( Samoa)............................................................................................................................Echthralictus stevensoni Cockerell, male.

Thorax not so colored............................................................................................................ 9

9.Males............................................................................................................................................ 10

Females.......................................................... ..

.

10. Abdomen olive green.............................................................................................................. 11

Abdomen not olive· green........................................................................................................ 12

11. Larger; flagellum broadly red beneath apically ( Samoa).... H. zachlorus Cockerell.

Smaller; flagellum black ( Fiji)................................ H. fijiensis Perkins and Cheesman.

12. Apical plate very large and broad ( Guam).................................... H. saffordi Cockerell.

Apical plate relatively small; abdomen black with an obscure greenish luster, varying to strongly purple ( Guam).............................................. H. swezeyi Cockerell.

13. Small species from New Caledonia, and Rota (H. rotai!nsis); thorax above green, with no purple shades............................................................................................ 14

Larger species, or if rather small (H. siwaiinsis) thorax above largely purple blue, or rosy pink (H. rotai!nsis hombosteli) ............................................................ 16

14. Tegulae dark ( New Caledonia)............................................................ H. risbeci Cockerell.

Tegulae clear red...................................................................................................................... 15

15. Abdomen dark purplish (Rota)...................................................... H. rotaensis Cockerell.

Abdomen green ( New Caledonia).............................................. H. crotalariae Cockerell.

16. Mesothorax and scutellum shining, with brilliant blue purple tints; front tibiae and tarsi clear red ( Fiji)............................................... H. suvaensis Cockerell.

Thorax not so colored............................................................................................................ 17

17. Tibiae and tarsi red ( Samoa).......................................................... H. zachlorus Cockerell.

Tibiae not thus red.................................................................................................................. 18

18. Mesothorax and scutellum violet, contrasting with the blue-green metathorax, legs partly red ( Guam)...................................................................... H. saffordi Cockerell.

Mesothorax and scutellum rosy, contrasting with the dark blue green of metathorax; legs dark brown; a smaller species (Rota).................................................. TODO TODO TODO TODO

Mesothorax and scutellum not at all violet or rosy...................................................... 19

19. Legs black, without red.......................................................................................................... 20

Legs partly red.......................................................................................................................... 22

20. Mesonotum dull green; abdomen broad, tergites dark bluish with black margins ( Solomon Islands).............................................................. H. viridiscitus Cockerell.

Mesonotumshining............................................................

21

21. Larger, face broader; abdomen dark bluish green.............. H. saffordi Cockerell, var.

Smaller, face narrower; abdomen olive green, varying to more bluish green ( Guam and Rota)................................................................................ H. swezeyi Cockerell.

22. Mesonotum dull peacock green; abdomen not distinctly metallic ( Samoa)........ TODO TODO TODO

Mesonotum and scutellum shining brilliant green ( Fiji)...................................,...... TODO TODO TODO TODO TODO