Difference between revisions of "Monomorium firmum"

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[[:File:Monomorium_firmum__casent0902234_l_1_high.jpg|Specimen Labels]]
 
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A collection of this ant was made in miombo woodland. ''Monomorium firmum'' has only been collected a few times.
  
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==Identification==
 
==Identification==
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Bolton (1987) - This relatively large yellow species is a conspicuous member of the ''schultzei''-complex. It is closest related to ''[[Monomorium vecte]]'', also known from Zimbabwe , the two together being distinguished from the remaining ''schultzei''-complex members which have relatively large propodeal spiracles by their dense pilosity. Of all ''schultzei''-complex members in which the metanotal groove is broad and traversed by long conspicuous cross-ribs, and the propodeal spiracle is large, only ''firmum'' and ''vecte'' have 8 or more pairs of hairs on the promesonotal dorsum. Differences separating the two are noted under ''vecte''.
  
 
{{Species identification keys}}
 
{{Species identification keys}}
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{{Nomenclature}}
 
{{Nomenclature}}
 
*''<span style='color:red;font-weight:bold;'>firmum.</span> Monomorium firmum'' Santschi, 1926b: 231 (w.) ZIMBABWE. See also: Bolton, 1987: 389.  
 
*''<span style='color:red;font-weight:bold;'>firmum.</span> Monomorium firmum'' Santschi, 1926b: 231 (w.) ZIMBABWE. See also: Bolton, 1987: 389.  
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{{nomenplus}}
  
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===Description===
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====Worker====
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Bolton (1987) -  TL 2.6-2.8, HL 0.58-0.66, HW 0.46-0.54, CI 79-83, SL 0.50-0.56, SI 100-109, PW 0.30-0.33, AL 0.70-0.76 (10 measured).
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Clypeal carinae conspicuous, relatively close together, feebly divergent anteriorly and sometimes the carinae broken or interrupted at about their midlength. Space between the clypeal carinae shallowly transversely concave. Anterior margin of narrow prominent median section of clypeus weakly concave, the anterior and lateral margins of this section separated by blunt angles, without projecting denticles. Maximum diameter of eye 0.20-0.22 x HW and with 6-7 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 at or even slightly behind the midlength of the sides. Antennal scapes, when laid straight back from their insertions, reaching or slightly surpassing the occipital margin. Sides of head evenly shallowly convex in full-face view and the occipital margin shallowly convex or the median area more or less flat. Promesonotum in profile a low convexity, descending behind to the broad impressed metanotal groove which is traversed by long strong cross-ribs. Propodeal spiracle large and conspicuous. Petiole node in profile relatively low, broadly subconical and with both anterior and posterior faces weakly convex. Subpetiolar process a conspicuous lobe. Postpetiole lower than petiole, smaller and more broadly rounded in profile. All dorsal surfaces of head and body with numerous standing hairs, the promesonotum with more than 8 pairs. Mostly unsculptured and shining except for scattered hair-pits, but the metanotal groove crossribbed and the mesopleuron in some with traces of weak reticulate sculpture. Colour yellow.
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===Type Material===
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Bolton (1987) -  Syntype workers, Zimbabwe: Vumba Mts, 6000 ft (1830 m), Cloudlands 6-17.iv.1923 (G. Arnold) ({{BMNH}}; {{NHMB}}) [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 389, see also)
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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]].
 
*Santschi, F. 1926b.  Description de nouveaux Formicides éthiopiens (IIIme partie). Rev. Zool. Afr. (Bruss.) 13: 207-267 (page 231, worker described)
 
*Santschi, F. 1926b.  Description de nouveaux Formicides éthiopiens (IIIme partie). Rev. Zool. Afr. (Bruss.) 13: 207-267 (page 231, worker described)
  
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[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium firmum]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium firmum]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|firmum]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|firmum]]
[[category:Need Overview]][[category:Need Body Text]]
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[[Category:Ssr]]

Revision as of 21:34, 13 August 2019

Monomorium firmum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. firmum
Binomial name
Monomorium firmum
Santschi, 1926

Monomorium firmum casent0902234 p 1 high.jpg

Monomorium firmum casent0902234 d 1 high.jpg

Specimen Labels

A collection of this ant was made in miombo woodland. Monomorium firmum has only been collected a few times.

Identification

Bolton (1987) - This relatively large yellow species is a conspicuous member of the schultzei-complex. It is closest related to Monomorium vecte, also known from Zimbabwe , the two together being distinguished from the remaining schultzei-complex members which have relatively large propodeal spiracles by their dense pilosity. Of all schultzei-complex members in which the metanotal groove is broad and traversed by long conspicuous cross-ribs, and the propodeal spiracle is large, only firmum and vecte have 8 or more pairs of hairs on the promesonotal dorsum. Differences separating the two are noted under vecte.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Zimbabwe (type locality).


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.

  • firmum. Monomorium firmum Santschi, 1926b: 231 (w.) ZIMBABWE. See also: Bolton, 1987: 389.

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 2.6-2.8, HL 0.58-0.66, HW 0.46-0.54, CI 79-83, SL 0.50-0.56, SI 100-109, PW 0.30-0.33, AL 0.70-0.76 (10 measured).

Clypeal carinae conspicuous, relatively close together, feebly divergent anteriorly and sometimes the carinae broken or interrupted at about their midlength. Space between the clypeal carinae shallowly transversely concave. Anterior margin of narrow prominent median section of clypeus weakly concave, the anterior and lateral margins of this section separated by blunt angles, without projecting denticles. Maximum diameter of eye 0.20-0.22 x HW and with 6-7 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 at or even slightly behind the midlength of the sides. Antennal scapes, when laid straight back from their insertions, reaching or slightly surpassing the occipital margin. Sides of head evenly shallowly convex in full-face view and the occipital margin shallowly convex or the median area more or less flat. Promesonotum in profile a low convexity, descending behind to the broad impressed metanotal groove which is traversed by long strong cross-ribs. Propodeal spiracle large and conspicuous. Petiole node in profile relatively low, broadly subconical and with both anterior and posterior faces weakly convex. Subpetiolar process a conspicuous lobe. Postpetiole lower than petiole, smaller and more broadly rounded in profile. All dorsal surfaces of head and body with numerous standing hairs, the promesonotum with more than 8 pairs. Mostly unsculptured and shining except for scattered hair-pits, but the metanotal groove crossribbed and the mesopleuron in some with traces of weak reticulate sculpture. Colour yellow.

Type Material

Bolton (1987) - Syntype workers, Zimbabwe: Vumba Mts, 6000 ft (1830 m), Cloudlands 6-17.iv.1923 (G. Arnold) (The Natural History Museum; Naturhistorisches Museum, Basel) [examined].

References