IUCN threat status:

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Comprehensive Description

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Neivamyrmex pilosus (F. Smith) HNS

Figures 13 a-b, 44, 59, 72, 86, 1110, 111, 121, 135, 146, 150, 151

Eciton pilosa F. Smith HNS , 1858: 151 (w). BRAZIL , Amazonas , Vila Nova ( BMNH ) .

Eciton clavicornis Norton HNS , 1868: 46 (w). MEXICO, Vera Cruz, Hacienda Potrero (types lost?).

Eciton pilosum HNS : Mayr, 1865: 77; 1886: 120. Dalla Torre, 1893: 5.

Eciton (Labidus) subsulcatum Mayr HNS , 1887: 440 (m). U. S. A., Texas (NHMV).

Eciton mexicanus HNS : Dalla Torre, 1893: 4. Forel, 1899: 27.

Eciton (Acamatus) pilosum HNS : Emery, 1894 a: 183. Emery, 1900 a: 524; Emery, 1910: 25. Borgmeier, 1923, 48. Borgmeier, 1934: 94. Wheeler, G. C., 1943: 331 (larva).

Eciton (Labidus) mexicanum HNS : Emery, 1895 b: 260. Emery, 1896 a: 33. Misidentification

Eciton pilosum HNS : Forel, 1899: 27. Wheeler & Long, 1901: 165.

Eciton (Acamatus) mexicanum HNS : Emery, 1900 a: 515, 525. Emery, 1910: 26. Wheeler, 1908: 414. M. R. Smith, 1931: 16.

Eciton aztecum Forel HNS , 1901: 49 (m). GUATEMALA , San Jose ( MHNG ) .

Eciton (Acamatus) pilosum HNS : Wheeler, 1908: 412. Wheeler, 1921: 313. M. R. Smith, 1924: 85; M. R. Smith, 1931: 295. Reichensperger, 1939: 297 (q).

Eciton (Acamatus) pilosum var. angustius Forel HNS , 1909: 256 (w). PARAGUAY , San Bernardino ( MHNG ) .

Emery, 1910: 25. Wheeler, 1921: 312. Eciton (Acamatus) mexicanum var. azteca HNS : Emery, 1910: 26. Eciton (Acamatus) pilosum var. beebei Wheeler HNS , 1921: 312 (w, m). GUYANA, Kartabo (MCZC). NEW

SYNONYMY. Eciton (Acamatus) pilosum var. aztecum HNS : Wheeler, 1921: 314. Eciton (Labidus) spininodis subsp. militarium Santschi HNS , 1929: 85 (w). PANAMA, Bocas del Toro,

Changuinola (BASEL). Borgmeier, 1953: 14. Eciton (Acamatus) porrectognathum Borgmeier HNS , 1933 b: 167 (m). BRAZIL, Rio de Janeiro, Angra dos

Reis u. Itatiaia (?). Eciton (Acamatus) pilosum var. mexicanum HNS : Borgmeier, 1936: 59. Borgmeier, 1939 a: 416.

Misidentification

Eciton (Neivamyrmex) pilosum HNS : M. R. Smith, 1942: 544. Creighton, 1950: 75.

Neivamyrmex pilosus porrectognathum HNS : Borgmeier, 1953: 5. BRAZIL, Angra dos Reis and Itatiaia (IBVB).

Neivamyrmex pilosus mexicanus HNS : Borgmeier, 1953: 17. Misidentification

Neivamyrmex pilosus beebei HNS : Borgmeier, 1953: 19.

Neivamyrmex pilosus HNS : Borgmeier, 1955: 361 - 373 (w, q, m).

Neivamyrmex pilosus subsp. beebei HNS : Borgmeier, 1955: 373 (w, m).

Neivamyrmex pilosus subsp. mexicanus HNS : Borgmeier, 1955: 374 (w, q, m). Watkins, 1976: 16. Watkins,

1982: 197 - 247. Watkins, 1985: 479 - 502. Misidentification

DISTRIBUTION (Map. 2)

UNITED STATES: Arkansas and Mississippi west to southern Arizona; MEXICO: border states south to Chiapas; south to BRAZIL and PARAGUAY.

SPECIMENS EXAMINED

We have 56 records of this wide-ranging species in the United States.

DISCUSSION

The male type of Labidus mexicanus HNS , described from Orizaba, Mexico by F. Smith (1859), has been examined. It is a specimen of N. swainsonii (Shuckard) HNS , not a form of N. pilosus HNS . Accordingly, L. mexicanus HNS is removed to the synonymy of that species.

We have examined both males and workers from throughout the extensive range of this species. We have found that the features distinguishing the several recognized subspecies form a continuum from north to south, with no clear demarcation for any of these features. Accordingly, all these are here placed in synonymy.

Watkins (1985) indicated on his map of the distribution of N. pilosus mexicanus HNS that this ant had been collected from California. We have examined the specimens, purportedly collected at Exeter, Tulare County, and concur that they are N. pilosus HNS . However, it is our opinion that these males are probably incorrectly labeled and we have not included California within the distribution of N. pilosus HNS .

Automontage images of the worker caste (as N. pilosus mexicanus HNS ) are located at antweb. org.

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Plazi

Source: Plazi.org

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