Difference between revisions of "Monomorium gabrielense"

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[[:File:Monomorium_gabrielense__casent0908715_l_1_high.jpg|Specimen Labels]]
 
[[:File:Monomorium_gabrielense__casent0908715_l_1_high.jpg|Specimen Labels]]
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Known from forest habitat collections of leaf litter and soil samples.
  
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==Identification==
 
==Identification==
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Bolton (1987) - The minute pale ''gabrielense'' is close to ''[[Monomorium noxitum]]'', ''[[Monomorium draxocum]]'' and ''[[Monomorium strangulatum]]''. The last named is immediately separable as it has only 11 antennal segments, as opposed to 12 in the remainder. Both ''noxitum'' and ''draxocum'' are brown to black in colour, much darker than ''gabrielense'', and both are larger, though only slightly so in ''draxocum''. Comparative dimensions are as follows.
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- ''gabrielense'' HW 0.30-0.32; SL 0.30-0.31; PW 0.19-0.20
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- ''draxocum'' HW 0.32-0.35; SL 0.32-0.36; PW 0.22-0.23
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- ''noxitum'' HW 0.37-0.40; SL 0.39-0.42; PW 0.24-0.27
  
 
{{Species identification keys}}
 
{{Species identification keys}}
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{{Nomenclature}}
 
{{Nomenclature}}
 
*''<span style='color:red;font-weight:bold;'>gabrielense.</span> Monomorium rhopalocerum'' var. ''gabrielensis'' Forel, 1916: 418 (w.q.) DEMOCRATIC REPUBLIC OF CONGO. Raised to species: Bolton, 1987: 392.
 
*''<span style='color:red;font-weight:bold;'>gabrielense.</span> Monomorium rhopalocerum'' var. ''gabrielensis'' Forel, 1916: 418 (w.q.) DEMOCRATIC REPUBLIC OF CONGO. Raised to species: Bolton, 1987: 392.
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{{nomenplus}}
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===Description===
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====Worker====
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Bolton (1987) - TL 1.5-1.6, HL 0.38-0.40, HW 0.30-0.32, CI 78-84, SL 0.30-0.31, SI 95-100, PW 0.19-0.20, AL 0.42-0.44 (10 measured).
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Clypeal carinae close posteriorly, moderately divergent anteriorly and reaching the anterior margin. Prominent median portion of clypeus narrow, the anterior margin between the apices of the carinae shallowly concave. Anterior and lateral margins of median portion of clypeus separated by an angle, without projecting denticles. Eyes relatively small, their maximum diameter 0.19-0.22 x HW and with 5 ommatidia in the longest row. With the head in full-face view the eyes close to the midlength of the sides; usually the posterior margins of the eyes on the midline. Antennal scapes, when laid straight back from their insertions, slightly exceeding the occipital margin. In full-face view the sides behind the eyes and the occipital margin usually forming a single even convexity, but in a few workers a minute mid-occipital depression may be present. In profile the dorsal and ventral surfaces of the head distinctly biconvex. Promesonotum in profile smoothly and evenly convex, sloping posteriorly to the shallowly impressed metanotal groove, highest point of promesonotal curve on a conspicuously higher level than the propodeum. Cross-ribs of metanotal groove short and inconspicuous, the propodeal spiracle large and easily visible. Propodeal dorsum highest just behind metanotal groove, sloping posteriorly to the obtuse rounded angle which separates dorsum from declivity; the two surfaces not forming a smooth even curve. Petiole node in profile subconical and narrowly rounded above , the subpetiolar process a narrow and inconspicuous laminar strip. Postpetiole node smaller, lower and more broadly convex than petiole node in profile. All dorsal surfaces of head and body with standing hairs present, the promesonotum with 4-5 pairs, and many hairs on head and first gastral tergite blunt or truncated apically. Sculpture consisting only of scattered hair-pits, metanotal cross-ribs, and a band of fine reticulation traversing the mesopleuron; otherwise entirely smooth and shining. Colour yellow, the gaster with a brownish tint.
  
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===Type Material===
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Bolton (1987) - Syntype workers, female, Zaire: St Gabriel (Kohl) ({{MHNG}}) [examined].
 
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===Type Material===
 
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===Description===
 
  
 
==References==
 
==References==
*Bolton, B. 1987. A review of the Solenopsis genus-group and revision of Afrotropical Monomorium Mayr (Hymenoptera: Formicidae). Bull. Br. Mus. (Nat. Hist.) Entomol. 54: 263-452 (page 392, Raised to species)
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*[[Media:Bolton 1987.pdf|Bolton, B. 1987. A review of the ''Solenopsis'' genus-group and revision of Afrotropical ''Monomorium'' Mayr (Hymenoptera: Formicidae). Bulletin of the British Museum (Natural History). Entomology. 54: 263-452. '''PDF]]. (page 392, Raised to species)
 
*Forel, A. 1916.  Fourmis du Congo et d'autres provenances récoltées par MM. Hermann Kohl, Luja, Mayné, etc. Rev. Suisse Zool. 24: 397-460 (page 418, worker, queen described)
 
*Forel, A. 1916.  Fourmis du Congo et d'autres provenances récoltées par MM. Hermann Kohl, Luja, Mayné, etc. Rev. Suisse Zool. 24: 397-460 (page 418, worker, queen described)
  
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[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium gabrielense]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium gabrielense]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|gabrielense]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|gabrielense]]
[[category:Need Overview]][[category:Need Body Text]]
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[[Category:Ssr]]

Latest revision as of 21:46, 13 August 2019

Monomorium gabrielense
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. gabrielense
Binomial name
Monomorium gabrielense
Forel, 1916

Monomorium gabrielense casent0908715 p 1 high.jpg

Monomorium gabrielense casent0908715 d 1 high.jpg

Specimen Labels

Known from forest habitat collections of leaf litter and soil samples.

Identification

Bolton (1987) - The minute pale gabrielense is close to Monomorium noxitum, Monomorium draxocum and Monomorium strangulatum. The last named is immediately separable as it has only 11 antennal segments, as opposed to 12 in the remainder. Both noxitum and draxocum are brown to black in colour, much darker than gabrielense, and both are larger, though only slightly so in draxocum. Comparative dimensions are as follows.

- gabrielense HW 0.30-0.32; SL 0.30-0.31; PW 0.19-0.20

- draxocum HW 0.32-0.35; SL 0.32-0.36; PW 0.22-0.23

- noxitum HW 0.37-0.40; SL 0.39-0.42; PW 0.24-0.27

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Democratic Republic of Congo (type locality), Gabon.

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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

  • gabrielense. Monomorium rhopalocerum var. gabrielensis Forel, 1916: 418 (w.q.) DEMOCRATIC REPUBLIC OF CONGO. Raised to species: Bolton, 1987: 392.

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

Description

Worker

Bolton (1987) - TL 1.5-1.6, HL 0.38-0.40, HW 0.30-0.32, CI 78-84, SL 0.30-0.31, SI 95-100, PW 0.19-0.20, AL 0.42-0.44 (10 measured).

Clypeal carinae close posteriorly, moderately divergent anteriorly and reaching the anterior margin. Prominent median portion of clypeus narrow, the anterior margin between the apices of the carinae shallowly concave. Anterior and lateral margins of median portion of clypeus separated by an angle, without projecting denticles. Eyes relatively small, their maximum diameter 0.19-0.22 x HW and with 5 ommatidia in the longest row. With the head in full-face view the eyes close to the midlength of the sides; usually the posterior margins of the eyes on the midline. Antennal scapes, when laid straight back from their insertions, slightly exceeding the occipital margin. In full-face view the sides behind the eyes and the occipital margin usually forming a single even convexity, but in a few workers a minute mid-occipital depression may be present. In profile the dorsal and ventral surfaces of the head distinctly biconvex. Promesonotum in profile smoothly and evenly convex, sloping posteriorly to the shallowly impressed metanotal groove, highest point of promesonotal curve on a conspicuously higher level than the propodeum. Cross-ribs of metanotal groove short and inconspicuous, the propodeal spiracle large and easily visible. Propodeal dorsum highest just behind metanotal groove, sloping posteriorly to the obtuse rounded angle which separates dorsum from declivity; the two surfaces not forming a smooth even curve. Petiole node in profile subconical and narrowly rounded above , the subpetiolar process a narrow and inconspicuous laminar strip. Postpetiole node smaller, lower and more broadly convex than petiole node in profile. All dorsal surfaces of head and body with standing hairs present, the promesonotum with 4-5 pairs, and many hairs on head and first gastral tergite blunt or truncated apically. Sculpture consisting only of scattered hair-pits, metanotal cross-ribs, and a band of fine reticulation traversing the mesopleuron; otherwise entirely smooth and shining. Colour yellow, the gaster with a brownish tint.

Type Material

Bolton (1987) - Syntype workers, female, Zaire: St Gabriel (Kohl) (Musee d'Histoire Naturelle Genève) [examined].

References