Neivamyrmex wilsoni

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Neivamyrmex wilsoni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Neivamyrmex
Species: N. wilsoni
Binomial name
Neivamyrmex wilsoni
Snelling, G.C. & Snelling, R.R., 2007

Neivamyrmex wilsoni casent0103465 profile 1.jpg

Neivamyrmex wilsoni casent0103465 dorsal 1.jpg

Specimen Label

Known habitats include oak-pine-juniper woodland, chamise chaparral and coastal sage scrub. Specimens have been collected from under a rock. (Snelling and Snelling 2007)

Identification

Worker. Eye spot absent; front of head smooth and shiny, with scattered coarse punctures; subantennal lamella well developed; petiole longer than broad in dorsal view, sides anteriorly convergent; postpetiole distinctly wider than long, disc smooth and shiny, sides shiny and lightly sculptured. This small species is most similar to Neivamyrmex nyensis and may be confused with that species. It may be separated by the shorter antennal scape (3.0× as long as wide vs. 4.0× as long as wide) and the opaque mesosomal dorsum. The only other local species with which Neivamyrmex wilsoni might be confused is Neivamyrmex leonardi, but in that species the mandibular teeth are better defined and the postpetiole is twice as wide as long. N. wilsoni is also a more hairy ant than other similar species. Large workers are further characterized by having the lower two-thirds or three-fourths of the head weakly longitudinally strigulose. (Snelling and Snelling 2007)

Keys including this Species

Distribution

United States and Mexico.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Only known from the worker caste.

Worker

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • wilsoni. Neivamyrmex wilsoni Snelling, G.C. & Snelling, R.R., 2007: 491, figs. 16, 26, 48, 61, 74, 87 (w.) U.S.A.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

measurements (mm) (n = 12). HL 0.48-0.77 (0.77); HW 0.36-0.70 (0.70); SL 0.24-0.0.405 (0.405); SW 0.07- 0.14 (0.14); PW 0.14-0.24 (0.24); PL 0.16-0.27 (0.27); PpL 0.12-0.23 (0.23); PpW 0.19-0.30 (0.30); HFL 0.34-0.62 (62) ; HFW 0.09-0.17 (0.17). Indices: CI 75-93 (90); FI 25-31 (28); SI 49-61 (52).

Head slightly longer than broad to distinctly longer than broad in minors, sides weakly convex; front of head smooth and shiny, with scattered coarse punctures; dorsolateral angle slightly developed, with strong preoccipital carina extending ventrad. Antennal scape about 2.9× longer than broad, evenly tapering toward base. Subantennal lamella well-developed. Mandible triangular, outer face weakly longitudinally striate; inner margin sharply angulate with masticatory margin, latter with small indistinct teeth.

Mesosoma contiguously punctate, slightly shiny. Promesonotal suture indistinct. Mesonotum smooth and shiny. Dorsum of propodeum opaque, in profile distinctly longer than slightly concave declivitous face. Petiole longer than broad in dorsal view and with sides convergent anteriorly, in profile dorsum evenly arched and abruptly descending anteriorly, disc shiny between sparse fine punctures; side punctate and opaque; subpetiolar process usually absent, but sometimes with small anteriorly directed tooth. Postpetiole distinctly wider than long, disc smooth and shiny, sides shiny and lightly sculptured.

Gaster smooth and shiny between small widely scattered punctures.

Pilosity about as usual in Neivamyrmex: a combination of sparse short to long, suberect to erect simple hairs.

Type Material

Holotype and numerous paratypes, U.S.A., California, San Diego Co., Elliot Reserve, Mira Mar (32.84° N 117.11° W), 28 March 1996 (A. Suarez). Holotype and most paratypes in Los Angeles County Museum of Natural History; paratypes also in The Natural History Museum, California Academy of Sciences, Museum of Comparative Zoology, and University of California, Davis.

Etymology

We name this species in honor of Ed Wilson, a small recognition of his many achievements in ant systematics, sociobiology and ecology.

References

  • Snelling, G. C.; Snelling, R. R. 2007. New synonymy, new species, new keys to Neivamyrmex army ants of the United States. In Snelling, R. R., B. L. Fisher, and P. S. Ward (eds). Advances in ant systematics (Hymenoptera: Formicidae): homage to E. O. Wilson - 50 years of contributions. Memoirs of the American Entomological Institute 80:459-550. PDF