Solenopsis striata

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Solenopsis striata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Solenopsis
Species complex: molesta
Species: S. striata
Binomial name
Solenopsis striata
Pacheco & Mackay, 2013

Solenopsis striata casent0636199 p 1 high.jpg

Workers of S. striata were collected in Berlese extraction litter samples from adjacent to a sphagnum bog, lowland forest, mixed oak, ridge forest, montane hardwood, montane transitional and wet montane cloud forests in Panama and Costa Rica at 600-1175 m.

Identification

A New World thief ant that is a member of the molesta species complex. (Key to New World Solenopsis Species Complexes)

Pacheco and Mackay (2013) – Worker - The worker is golden yellow. The funicular segments are 0.120 mm in total length. The eye is small with 3-5 ommatidia. The mesopleuron and metapleuron are completely horizontally striated. The petiolar peduncle has a small tooth ventrally.

The horizontally striated mesopleuron will separate S. striata from most others in the Solenopsis molesta species complex, including Solenopsis laeviceps (Belize to Brazil), in which the mesopleuron is nearly completely smooth and shiny. Solenopsis striata is also similar to Solenopsis joergenseni (Argentina, Paraguay and Brazil) but can be separated as S. striata has a smaller eye composed of 3-5 ommatidia, compared to 8-10 ommatidia for S. joergenseni.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 18.568259° to 10.33333°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality), Guatemala, Mexico, Panama.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Known only from the worker caste.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • striata. Solenopsis striata Pacheco & Mackay, 2013: 301, figs. 278, 279 (w.) COSTA RICA, PANAMA.
    • Type-material: holotype worker, 61 paratype workers.
    • Type-locality: holotype Costa Rica: Guanacaste, Pitilla Field Station, 600-1175 m., 2.v.1996, and 14.ii.1998, nos 17679, 17692, 17694, 17715, 17722, 17741 (R. Anderson); paratypes with same data.
    • [Note: Pacheco & Mackay do not specify the holotype date or collection number.]
    • Type-depositories: MCZC (holotype); AMNH, CASC, INBC, LACM, MCZC, MPEG, MZSP, USNM, WEMC (paratypes).
    • Distribution: Costa Rica, Panama.

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

Description

Worker

Measurements (n=5). TL 1.44-1.62 (1.51); HL 0.420-0.426 (0.421); HW 0.360-0.390 (0.369); EL 0.030-0.036 (0.035); ED 0.030; SL 0.288-0.324 (0.313); FSL 0.120-0.132 (0.126); CI 84.5-92.9 (87.8); SI 68.6-77.1 (74.4); PL 0.078-0.084 (0.082); PW 0.090-0.126 (0.113); PI 66.7-86.7 (73.3); PPL 0.102-0.108 (0.106); PPW 0.120-0.144 (0.131); PPI 70.8-90.0 (81.3); WL 0.324-0.342 (0.330); PSL 0.030; PSW 0.030.

Small; concolorous golden yellow; head subquadrate, slightly longer than broad, sides of head convex, posterior border straight; lateral clypeal teeth well developed, extralateral teeth developed as only slightly swollen areas; scape nearly reaching posterior lateral corner of head; eyes small, 3-5 ommatidia; notopropodeal suture deeply depressed; punctures on head small, only slightly larger in diameter than hairs arising from them, all surfaces smooth and glossy, except for mesopleuron and metapleuron, which are latitudinally striated (at least lower half); petiole wider than postpetiole viewed laterally; petiolar node rounded, peduncle with small tooth ventrally; postpetiolar node oval, lacking tooth or flange ventrally.

Abundantly hairy with yellow pilosity; erect and suberect hairs abundant on most surfaces, including scapes and tibiae; longest hairs on mesosoma 0.012 mm; hairs on petiole, postpetiole and gaster curve posteriorly.

Type Material

Holotype worker (Museum of Comparative Zoology) and 61 paratype workers (American Museum of Natural History, California Academy of Sciences, William and Emma Mackay Collection, Instituto Nacional de Biodiversidad, Los Angeles County Museum of Natural History, MCZC, Museu Paraense Emilio Goeldi, Museu de Zoologia da Universidade de Sao Paulo, National Museum of Natural History), Costa Rica, Guanacaste, Pitilla Field Station, 600 - 1175m, 2-v-1996, 14-ii-1998, R. Anderson #' s 17679, 17691, 17692, 17694, 17715, 17721, 17722, 17741.

Etymology

From Latin, stria for furrow, referring to the sculpture on the lower mesopleuron and metapleuron.

References

References based on Global Ant Biodiversity Informatics

  • Castano-Meneses, G., M. Vasquez-Bolanos, J. L. Navarrete-Heredia, G. A. Quiroz-Rocha, and I. Alcala-Martinez. 2015. Avances de Formicidae de Mexico. Universidad Nacional Autonoma de Mexico.
  • Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
  • Longino J. et al. ADMAC project. Accessed on March 24th 2017 at https://sites.google.com/site/admacsite/
  • Pacheco J. A., and W. P. Mackay. 2013. The systematics and biology of the New World thief ants of the genus Solenopsis (Hymenoptera: Formicidae). Lewiston, New York: Edwin Mellen Press, 501 pp.