Difference between revisions of "Monomorium havilandi"

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*''[[Monomorium distinctum]]'' Arnold, 1944
 
*''[[Monomorium distinctum]]'' Arnold, 1944
 
*''[[Monomorium distinctum leviceps]]'' Arnold, 1958
 
*''[[Monomorium distinctum leviceps]]'' Arnold, 1958
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The few collections of this species with habitat data show it has been collected in open areas.
  
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==Identification==
 
==Identification==
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Bolton (1987) -  Easily diagnosed as this is the only Afrotropical ''[[Monomorium]]'' except for the very distinctive ''Monomorium abyssinicum'' (=''[[Trichomyrmex abyssinicus]]'') which has only three teeth present on the mandible. All other Afrotropical species have 4 teeth, 3 teeth plus a basal denticle, or in one species (''[[Monomorium latinode]]''), 5 teeth.
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The synonymized ''Monomorium distinctum'' shows slightly stronger promesonotal sculpture and has more sharply defined and denser hair-pits on the cephalic dorsum. This is regarded as a very minor character variation.
  
 
{{Species identification keys}}
 
{{Species identification keys}}
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==Castes==
 
==Castes==
 
  
 
==Nomenclature==
 
==Nomenclature==
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*''distinctum. Monomorium (Xeromyrmex) distinctum'' Arnold, 1944: 11, fig. 18 (w.m.) SOUTH AFRICA. Junior synonym of ''havilandi'': Bolton, 1987: 368.
 
*''distinctum. Monomorium (Xeromyrmex) distinctum'' Arnold, 1944: 11, fig. 18 (w.m.) SOUTH AFRICA. Junior synonym of ''havilandi'': Bolton, 1987: 368.
 
*''leviceps. Monomorium distinctum'' var. ''leviceps'' Arnold, 1958: 119 (w.) SOUTH AFRICA. Junior synonym of ''havilandi'': Bolton, 1987: 368.
 
*''leviceps. Monomorium distinctum'' var. ''leviceps'' Arnold, 1958: 119 (w.) SOUTH AFRICA. Junior synonym of ''havilandi'': Bolton, 1987: 368.
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{{nomenplus}}
  
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===Description===
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====Worker====
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Bolton (1987) - TL 2.8-3.1, HL 0.72-0.76, HW 0.62-0.67, CI 86-90, SL 0.49-0.55, SI 78-82, PW 0.40-0.43, AL 0.74-0.80 (14 measured).
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Mandibles with three teeth only, without trace of a reduced fourth tooth or offset denticle as is usual in this group. Eyes not reniform but their ventral margins flat to very shallowly concave, their dorsal margins broadly convex, so that the anterior angle of the eye is narrower and much more narrowly rounded than the posterior angle. Maximum diameter of eye 0.27-0.30 x HW and with 10-12 ommatidia in the longest row. Head relatively short and broad in full-face view, and the scapes short (CI 90 or less, SI <85). Metanotal groove weakly impressed. Short standing hairs present on all dorsal surfaces of head and body, numerous on the first gastral tergite but sparse or rarely absent on the propodeum. Occipital surface of head with superficial reticular patterning at least medially, and dorsum usually with a patch of similar or even fainter patterning in the area immediately behind the frontal lobes, but otherwise the head entirely featureless and smooth except for small hair-pits. Promesonotum dorsally finely superficially reticulate, the surface appearing weakly shagreenate to feebly punctulate in places. Propodeal dorsum finely reticulate-punctate. Sides of alitrunk with faint vestiges of sculpture on the pronotum, the remainder densely reticulate-punctate. First gastral tergite unsculptured and smooth from base to apex, highly polished. Colour uniform blackish brown to black, the gaster often shiny jet black.
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===Type Material===
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Bolton (1987) - Syntype workers, female, South Africa: Natal (Haviland) ({{MHNG}}) [examined].
 
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===Description===
 
  
 
==References==
 
==References==
 
*[[Media:Arnold 1958.pdf|Arnold, G. 1958. New species of African Hymenoptera. No. 13. Occas. Pap. Natl. Mus. South. Rhod. B. Nat. Sci. 3: 119-143 '''PDF''']]
 
*[[Media:Arnold 1958.pdf|Arnold, G. 1958. New species of African Hymenoptera. No. 13. Occas. Pap. Natl. Mus. South. Rhod. B. Nat. Sci. 3: 119-143 '''PDF''']]
*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 368, Revived status as species, and senior synonym of distinctum and leviceps)
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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 368, Revived status as species, and senior synonym of distinctum and leviceps)
 
*Forel, A. 1910f.  Note sur quelques fourmis d'Afrique. Ann. Soc. Entomol. Belg. 54: 421-458 (page 443, worker, queen described)
 
*Forel, A. 1910f.  Note sur quelques fourmis d'Afrique. Ann. Soc. Entomol. Belg. 54: 421-458 (page 443, worker, queen described)
 
*Santschi, F. 1917b [1916].  Fourmis nouvelles de la Colonie du Cap, du Natal et de Rhodesia. Ann. Soc. Entomol. Fr. 85: 279-296 (page 282, Combination in M. (Parholcomyrmex), and stirps of australe)
 
*Santschi, F. 1917b [1916].  Fourmis nouvelles de la Colonie du Cap, du Natal et de Rhodesia. Ann. Soc. Entomol. Fr. 85: 279-296 (page 282, Combination in M. (Parholcomyrmex), and stirps of australe)
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[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium havilandi]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium havilandi]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|havilandi]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|havilandi]]
[[category:Need Overview]][[category:Need Body Text]]
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[[Category:Ssr]]

Revision as of 22:38, 15 August 2019

Monomorium havilandi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. havilandi
Binomial name
Monomorium havilandi
Forel, 1910

Monomorium havilandi casent0902185 p 1 high.jpg

Monomorium havilandi casent0902185 d 1 high.jpg

Specimen Labels

Synonyms

The few collections of this species with habitat data show it has been collected in open areas.

Identification

Bolton (1987) - Easily diagnosed as this is the only Afrotropical Monomorium except for the very distinctive Monomorium abyssinicum (=Trichomyrmex abyssinicus) which has only three teeth present on the mandible. All other Afrotropical species have 4 teeth, 3 teeth plus a basal denticle, or in one species (Monomorium latinode), 5 teeth.

The synonymized Monomorium distinctum shows slightly stronger promesonotal sculpture and has more sharply defined and denser hair-pits on the cephalic dorsum. This is regarded as a very minor character variation.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: South Africa (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.

  • havilandi. Monomorium havilandi Forel, 1910e: 443 (w.q.) SOUTH AFRICA. Combination in M. (Parholcomyrmex): Santschi, 1917b: 282. Subspecies of australe: Santschi, 1917b: 282. Revived status as species and senior synonym of distinctum, leviceps: Bolton, 1987: 368.
  • distinctum. Monomorium (Xeromyrmex) distinctum Arnold, 1944: 11, fig. 18 (w.m.) SOUTH AFRICA. Junior synonym of havilandi: Bolton, 1987: 368.
  • leviceps. Monomorium distinctum var. leviceps Arnold, 1958: 119 (w.) SOUTH AFRICA. Junior synonym of havilandi: Bolton, 1987: 368.

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 2.8-3.1, HL 0.72-0.76, HW 0.62-0.67, CI 86-90, SL 0.49-0.55, SI 78-82, PW 0.40-0.43, AL 0.74-0.80 (14 measured).

Mandibles with three teeth only, without trace of a reduced fourth tooth or offset denticle as is usual in this group. Eyes not reniform but their ventral margins flat to very shallowly concave, their dorsal margins broadly convex, so that the anterior angle of the eye is narrower and much more narrowly rounded than the posterior angle. Maximum diameter of eye 0.27-0.30 x HW and with 10-12 ommatidia in the longest row. Head relatively short and broad in full-face view, and the scapes short (CI 90 or less, SI <85). Metanotal groove weakly impressed. Short standing hairs present on all dorsal surfaces of head and body, numerous on the first gastral tergite but sparse or rarely absent on the propodeum. Occipital surface of head with superficial reticular patterning at least medially, and dorsum usually with a patch of similar or even fainter patterning in the area immediately behind the frontal lobes, but otherwise the head entirely featureless and smooth except for small hair-pits. Promesonotum dorsally finely superficially reticulate, the surface appearing weakly shagreenate to feebly punctulate in places. Propodeal dorsum finely reticulate-punctate. Sides of alitrunk with faint vestiges of sculpture on the pronotum, the remainder densely reticulate-punctate. First gastral tergite unsculptured and smooth from base to apex, highly polished. Colour uniform blackish brown to black, the gaster often shiny jet black.

Type Material

Bolton (1987) - Syntype workers, female, South Africa: Natal (Haviland) (Musee d'Histoire Naturelle Genève) [examined].

References