Difference between revisions of "Adelomyrmex paratristani"

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(Identification)
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{{Taxobox
 
{{Taxobox
 
|name = ''Adelomyrmex paratristani''
 
|name = ''Adelomyrmex paratristani''
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[[:File:Adelomyrmex_paratristani__casent0106201_l_1_high.jpg|Specimen Labels]]
 
[[:File:Adelomyrmex_paratristani__casent0106201_l_1_high.jpg|Specimen Labels]]
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A common species in the ground litter of some cloud forests within its range.
 
==Identification==
 
==Identification==
 
Longino (2012) - With the characters of ''[[Adelomyrmex tristani]]''; differing in the relatively longer, sparser, more erect pilosity on the face, mesosoma, and gaster; FSH usually > 0.06 mm, FSI > 0.1 (in ''A. tristani'', FSH usually < 0.06 mm, FSI < 0.1); in sympatry, ''A. paratristani'' is larger than ''A. tristani''.  
 
Longino (2012) - With the characters of ''[[Adelomyrmex tristani]]''; differing in the relatively longer, sparser, more erect pilosity on the face, mesosoma, and gaster; FSH usually > 0.06 mm, FSI > 0.1 (in ''A. tristani'', FSH usually < 0.06 mm, FSI < 0.1); in sympatry, ''A. paratristani'' is larger than ''A. tristani''.  
  
 
'''Variation''' In the northern and southern limits of the range, the posterior margin of the worker postpetiole has 4–5 transverse rugae. The lowermost ruga is the largest, but not so much so that it forms a projecting step-like profile. In the center of the range, from central Honduras to southern Chiapas, the uppermost rugae on the postpetiolar node are reduced, resulting in a smaller, smoother postpetiole. The lowermost ruga on the posterior margin remains large, resulting in a step-like profile of the posterior face of the postpetiole. There is no evidence of sympatry of forms; instead they occur as allopatric populations on mountain tops. However, the transition can sharp and somewhat interdigitated. For example, in Honduras, Cerro Comayagua has the peripheral form, and Cerro Azul Meambar, 50 km to the northwest, has the central form.
 
'''Variation''' In the northern and southern limits of the range, the posterior margin of the worker postpetiole has 4–5 transverse rugae. The lowermost ruga is the largest, but not so much so that it forms a projecting step-like profile. In the center of the range, from central Honduras to southern Chiapas, the uppermost rugae on the postpetiolar node are reduced, resulting in a smaller, smoother postpetiole. The lowermost ruga on the posterior margin remains large, resulting in a step-like profile of the posterior face of the postpetiole. There is no evidence of sympatry of forms; instead they occur as allopatric populations on mountain tops. However, the transition can sharp and somewhat interdigitated. For example, in Honduras, Cerro Comayagua has the peripheral form, and Cerro Azul Meambar, 50 km to the northwest, has the central form.
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Some collections of ''A. paratristani'' are difficult to differentiate from the lower elevation ''[[Adelomyrmex myops]]''.
  
 
[[Key to Adelomyrmex of the New World mainland|Key to ''Adelomyrmex'' of the New World mainland]]
 
[[Key to Adelomyrmex of the New World mainland|Key to ''Adelomyrmex'' of the New World mainland]]
  
 
==Distribution==
 
==Distribution==
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southern Mexico to central Nicaragua
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===Distribution based on [[:Category:Regional Taxon List|Regional Taxon Lists]]===
 
===Distribution based on [[:Category:Regional Taxon List|Regional Taxon Lists]]===
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===Habitat===
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This species occurs in montane wet forest, second growth and mature, from 1100–2500 m elevation. Forests can be diverse mesophyll cloud forest and various mixes of pine, oak, and ''Liquidambar'' forest.
  
 
==Biology==
 
==Biology==
  
 
==Castes==
 
==Castes==
 
  
 
==Nomenclature==
 
==Nomenclature==

Revision as of 16:33, 9 October 2014

Adelomyrmex paratristani
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Adelomyrmex
Species: A. paratristani
Binomial name
Adelomyrmex paratristani
Longino, 2012

Adelomyrmex paratristani casent0106201 p 1 high.jpg

Adelomyrmex paratristani casent0106201 d 1 high.jpg

Specimen Labels

A common species in the ground litter of some cloud forests within its range.

Identification

Longino (2012) - With the characters of Adelomyrmex tristani; differing in the relatively longer, sparser, more erect pilosity on the face, mesosoma, and gaster; FSH usually > 0.06 mm, FSI > 0.1 (in A. tristani, FSH usually < 0.06 mm, FSI < 0.1); in sympatry, A. paratristani is larger than A. tristani.

Variation In the northern and southern limits of the range, the posterior margin of the worker postpetiole has 4–5 transverse rugae. The lowermost ruga is the largest, but not so much so that it forms a projecting step-like profile. In the center of the range, from central Honduras to southern Chiapas, the uppermost rugae on the postpetiolar node are reduced, resulting in a smaller, smoother postpetiole. The lowermost ruga on the posterior margin remains large, resulting in a step-like profile of the posterior face of the postpetiole. There is no evidence of sympatry of forms; instead they occur as allopatric populations on mountain tops. However, the transition can sharp and somewhat interdigitated. For example, in Honduras, Cerro Comayagua has the peripheral form, and Cerro Azul Meambar, 50 km to the northwest, has the central form.

Some collections of A. paratristani are difficult to differentiate from the lower elevation Adelomyrmex myops.

Key to Adelomyrmex of the New World mainland

Distribution

southern Mexico to central Nicaragua

Distribution based on Regional Taxon Lists

Neotropical Region: Honduras (type locality), Mexico, Nicaragua.

Check distribution from AntMaps.

{{#display_map: |width=600 |height=500 |centre=17,-92 |gkml=http://www.antweb.org/googleEarth.do?google=genus=Adelomyrmex---species=paratristani |kmlrezoom=no |zoom=5 |resizable=yes |controls=pan, zoom, type, scale |markercluster=yes }}

Check specimen data from AntWeb

Habitat

This species occurs in montane wet forest, second growth and mature, from 1100–2500 m elevation. Forests can be diverse mesophyll cloud forest and various mixes of pine, oak, and Liquidambar forest.

Biology

Castes

Nomenclature

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

  • paratristani. Adelomyrmex paratristani Longino, 2012: 26, figs. 8, 10, 11, 19, 21 (w.q.) HONDURAS.

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

Description

Worker

HW 0.54–0.71 (n=8); mandible with differentiated masticatory and basal margins; masticatory margin with 5–6 teeth; basal margin sinuous with a distinct basal tooth and notch between tooth and condyle; dorsal surface of mandible with several coarse longitudinal striae and several large piligerous puncta; in full face view, lateral clypeal teeth project from beneath clypeal shelf; lateral clypeal teeth located on anterior (ventral) margin of clypeus and separate from transverse carina that forms clypeal shelf; hypostomal tooth present as a minute denticle; compound eye composed of 6–16 ommatidia; face with longitudinally oriented rugae, linear to vermiculate.

Short anterior face of pronotum meeting dorsal face at obtuse angle, separated by a low, simple to somewhat crenulated transverse ruga; promesonotum evenly and shallowly convex; metanotal groove impressed; propodeal spines short, triangular, acute at tip; space between propodeal spines a broad concavity without distinct dorsal and posterior faces, smooth and shiny with 2–5 transverse rugae; rugae of dorsal promesonotum and side of mesosoma longitudinally oriented, linear to vermiculate; petiolar and postpetiolar nodes rounded, with coarse rugae; postpetiole in dorsal view about as long as wide, evenly rounded posteriorly; gastral dorsum smooth and shining.

Scape with abundant subdecumbent pubescence; clypeus and frontal carinae with long erect setae; posterior and posterolateral margins of head with long erect setae; mid and hind tibia with abundant long subdecumbent setae and 3–4 differentiated erect setae that are longer than width of tibia; in profile, dorsal surfaces of head, mesosoma, and gaster with relatively sparse, long, erect setae; FSH 0.06–0.11 mm, FSI 0.11–0.15 (n=8).

Color dark brown to black.

Queen

Similar to worker except for queen-specific characters of large compound eyes, ocelli, and enlarged mesosoma with queen-typical sclerites; pronotum smooth medially, laterally with coarse parallel rugae; mesonotum largely with longitudinal parallel rugae, with an anteromedian triangular patch that is smooth and shining; scutellum with longitudinal parallel rugae; katepisternum smooth and shining on anteroventral 2/3, with longitudinal parallel rugae along posterior and dorsal margins; anepisternum and side of propodeum with longitudinal parallel rugae.

References

  • Longino, J.T. 2012. A review of the ant genus Adelomyrmex Emery 1897 (Hymenoptera, Formicidae) in Central America. Zootaxa 3456, 1–35.
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