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| Taxon | Status | Relationship Type |
|---|---|---|
| Labidus nigrescens Cresson | Original name/combination | member |
| Eciton (Acamatus) nigrescens (Cresson) | Subsequent name/combination | member |
| Eciton (Acamatus) schmitti Emery | Original name/combination | |
| Eciton Schmitti Emery | Original name/combination | |
| Eciton schmitti Emery | Subsequent name/combination | |
| Neivamyrmex schmitti (Emery) | Subsequent name/combination | |
| Eciton nigrescens (Cresson) | Subsequent name/combination | member |
| Eciton (Acmatus) schmitti Emery | Unavailable, literature misspelling | |
| Eciton (Neivamyrmex) nigrescens (Cresson) | Subsequent name/combination | member |
| Neivamyrmex nigrescens (Cresson) | Subsequent name/combination | member |
| Eciton (Labidus) nigrescens (Cresson) | Subsequent name/combination | member |
| Citation | Annotation |
|---|---|
| Creighton W. S., 1950: 74. | junior synonym of Eciton (Neivamyrmex) nigrescens (Cresson) |
| Pergande T., 1896: 874. | placed in subgenus Eciton (Acamatus), distribution |
| Wheeler W. M., 1908: 410. | distribution |
| Wheeler W. M., 1911: 157. | designated as type species of Acamatus Emery |
| Hayes W. P., 1925: 12. | distribution |
| Smith M. R., 1930: 2. | distribution |
| Wheeler W. M., 1932: 2. | distribution |
| Smith M. R., 1936: 157. | distribution |
| Borgmeier T., 1936: 59. | distribution |
| Smith M. R., 1935: 237. | distribution |
| Smith M. R., 1942: 551. | junior synonym of Eciton (Neivamyrmex) nigrescens (Cresson) |
| Morris R. L., 1944: 205. | distribution |
| Wheeler G. C., 1943: 331. | description |
| Borgmeier T., 1955: 501. | quotation of original description |
| Ward P. S., 1999: 84. | type information |
| Snelling G. C., Snelling R. R., 2007: 459-550. | type information |
| Determiner(s) | # of Records |
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| Collecting Method | # of Records |
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