Difference between revisions of "Monomorium excensurae"

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[[:File:Monomorium_excensurae__casent0908714_l_1_high.jpg|Specimen Labels]]
 
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Nothing is known about the biology of ''{{PAGENAME}}''.
  
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==Identification==
 
==Identification==
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Bolton (1987) - ''M. excensurae'' belongs to the ''schultzei''-complex and is closely related to ''[[Monomorium bevisi]]'' and ''schultzei'' itself, the three species possessing a minute and pinhole-like propodeal spiracle. Of the three ''bevisi'' is dingy brown in colour and conspicuously more densely hairy than ''schultzei'' or ''excensurae'', both of which are yellow. These last two are very closely related and are best separated by the slightly larger eyes and shorter scapes of ''schultzei''. Apart from this the outline shape of the eye is more nearly round in ''excensurae'', whereas in ''schultzei'' the longitudinal axis of the eye is more obviously longer than the vertical axis. The clypeal carinae of schultze; are more strongly developed and the area of clypeus between them more deeply concave, and the dorsum of the petiole node in dorsal view is more anteroposteriorly compressed in ''schultzei''.
  
 
{{Species identification keys}}
 
{{Species identification keys}}
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==Castes==
 
==Castes==
 
  
 
==Nomenclature==
 
==Nomenclature==
 
{{Nomenclature}}
 
{{Nomenclature}}
 
*''<span style='color:red;font-weight:bold;'>excensurae.</span> Monomorium oscaris'' var. ''excensurae'' Forel, 1915c: 342 (w.) SOUTH AFRICA. Raised to species: Bolton, 1987: 386.
 
*''<span style='color:red;font-weight:bold;'>excensurae.</span> Monomorium oscaris'' var. ''excensurae'' Forel, 1915c: 342 (w.) SOUTH AFRICA. Raised to species: Bolton, 1987: 386.
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===Description===
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====Worker====
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Bolton (1987) - TL 1.9-2.2, HL 0.50-0.58, HW 0.38-0.45, CI 76-79, SL 0.40-0.48, SI 104-110, PW 0.26-0.29, AL 0.50-0.64 (10 measured).
  
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Clypeal carinae close together, subparallel, usually very weakly divergent anteriorly but in some the carinae weakly bowed outwards to their mid lengths then curving in again anteriorly. Prominent median portion of clypeus narrow, its anterior margin transverse to concave between the apices of the carinae and lacking denticles or sharp angles at the junction of its anterior and lateral margins. Maximum diameter of eye 0.20-0.23 x HW and with 5-6 ommatidia in the longest row. In full-face view the posterior margins of the eyes at the midlength of the sides of the head. Antennal scapes, when laid straight back from their insertions, just reaching or fractionally surpassing the occipital margin. Sides of head in full-face view evenly convex, broadest at level of hind margins of eyes; occipital margin very shallowly concave. Promesonotum in profile quite shallowly evenly convex, the highest point in front of the promesonotal midlength and on a higher level than the highest point of the propodeum. Metanotal groove impressed but narrow and traversed by short inconspicuous cross-ribs. Propodeal spiracle minute and pinhole-like. Petiole with a narrow anterior peduncle in profile, the subpetiolar process a small anteroventral lobe which varies in shape and size. Petiole node subconical, the anterior face much longer and more shallowly sloping than the posterior. Postpetiole node smaller, lower and more broadly rounded than the petiole. All dorsal surfaces of head and body with standing hairs, the promesonotum with 4 or 5 pairs. Body and head entirely lacking sculpture except for minute hair-pits and metanotal weak cross-ribs. Colour uniform yellow.
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===Type Material===
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Bolton (1987) - Syntype workers, South Africa: Cape Prov., Kentani (A. Pegler) ({{MHNG}}) [examined].
 
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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 386, 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 386, Raised to species)
 
*Forel, A. 1915c.  Formicides d'Afrique et d'Amérique nouveaux ou peu connus. IIe partie. Bull. Soc. Vaudoise Sci. Nat. 50: 335-364 (page 342, worker described)
 
*Forel, A. 1915c.  Formicides d'Afrique et d'Amérique nouveaux ou peu connus. IIe partie. Bull. Soc. Vaudoise Sci. Nat. 50: 335-364 (page 342, worker described)
  
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[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium excensurae]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium excensurae]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|excensurae]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|excensurae]]
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[[Category:Ssr]]

Revision as of 18:19, 13 August 2019

Monomorium excensurae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. excensurae
Binomial name
Monomorium excensurae
Forel, 1915

Monomorium excensurae casent0908714 p 1 high.jpg

Monomorium excensurae casent0908714 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Monomorium excensurae.

Identification

Bolton (1987) - M. excensurae belongs to the schultzei-complex and is closely related to Monomorium bevisi and schultzei itself, the three species possessing a minute and pinhole-like propodeal spiracle. Of the three bevisi is dingy brown in colour and conspicuously more densely hairy than schultzei or excensurae, both of which are yellow. These last two are very closely related and are best separated by the slightly larger eyes and shorter scapes of schultzei. Apart from this the outline shape of the eye is more nearly round in excensurae, whereas in schultzei the longitudinal axis of the eye is more obviously longer than the vertical axis. The clypeal carinae of schultze; are more strongly developed and the area of clypeus between them more deeply concave, and the dorsum of the petiole node in dorsal view is more anteroposteriorly compressed in schultzei.

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.

  • excensurae. Monomorium oscaris var. excensurae Forel, 1915c: 342 (w.) SOUTH AFRICA. Raised to species: Bolton, 1987: 386.

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 1.9-2.2, HL 0.50-0.58, HW 0.38-0.45, CI 76-79, SL 0.40-0.48, SI 104-110, PW 0.26-0.29, AL 0.50-0.64 (10 measured).

Clypeal carinae close together, subparallel, usually very weakly divergent anteriorly but in some the carinae weakly bowed outwards to their mid lengths then curving in again anteriorly. Prominent median portion of clypeus narrow, its anterior margin transverse to concave between the apices of the carinae and lacking denticles or sharp angles at the junction of its anterior and lateral margins. Maximum diameter of eye 0.20-0.23 x HW and with 5-6 ommatidia in the longest row. In full-face view the posterior margins of the eyes at the midlength of the sides of the head. Antennal scapes, when laid straight back from their insertions, just reaching or fractionally surpassing the occipital margin. Sides of head in full-face view evenly convex, broadest at level of hind margins of eyes; occipital margin very shallowly concave. Promesonotum in profile quite shallowly evenly convex, the highest point in front of the promesonotal midlength and on a higher level than the highest point of the propodeum. Metanotal groove impressed but narrow and traversed by short inconspicuous cross-ribs. Propodeal spiracle minute and pinhole-like. Petiole with a narrow anterior peduncle in profile, the subpetiolar process a small anteroventral lobe which varies in shape and size. Petiole node subconical, the anterior face much longer and more shallowly sloping than the posterior. Postpetiole node smaller, lower and more broadly rounded than the petiole. All dorsal surfaces of head and body with standing hairs, the promesonotum with 4 or 5 pairs. Body and head entirely lacking sculpture except for minute hair-pits and metanotal weak cross-ribs. Colour uniform yellow.

Type Material

Bolton (1987) - Syntype workers, South Africa: Cape Prov., Kentani (A. Pegler) (Musee d'Histoire Naturelle Genève) [examined].

References