Difference between revisions of "Monomorium dictator"

Every Ant Tells a Story - And Scientists Explain Their Stories Here
Jump to navigation Jump to search
(Update Distribution section)
 
(2 intermediate revisions by the same user not shown)
Line 21: Line 21:
  
 
[[:File:Monomorium_dictator__casent0913572_l_1_high.jpg|Specimen Labels]]
 
[[:File:Monomorium_dictator__casent0913572_l_1_high.jpg|Specimen Labels]]
 +
}}
 +
 +
Nothing is known about the biology of ''{{PAGENAME}}''.
  
}}
 
 
==Identification==
 
==Identification==
 +
Bolton (1987) - ''M. dictator'' is closely related to ''[[Monomorium bicolor]]'' and ''[[Monomorium rufulum]]''. It separates from the former by having the gaster much more densely hairy than in ''bicolor'', and dictator lacks the very reduced fourth (basal) tooth on the mandible, which is characteristic of ''rufulum''. Other members of the ''bicolor''-complex, characterized together by their possession of dense reticulate-punctate sculpture on the head and alitrunk, and bicoloured body with the gaster blackish brown to black and the head and alitrunk reddish, separate from dictator as follows.
 +
 +
''[[Monomorium westi]]'', presently known only from Kenya, has the two longitudinal clypeal carinae terminating in freely projecting sharp teeth, not developed in ''dictator''. ''[[Monomorium personatum]]'', a species sympatric with dictator, has much larger eyes whose maximum diameter is 0.31-0.33 x HW, as opposed to 0.25 x HW in ''dictator''. ''[[Monomorium hirsutum]]'', known only from Ethiopia, has the dorsal alitrunk densely hairy; in ''dictator'' the alitrunk lacks standing hairs.
  
 
{{Species identification keys}}
 
{{Species identification keys}}
Line 38: Line 43:
 
==Castes==
 
==Castes==
 
<gallery perrow=4 caption='The following images are provided by AntWeb'>
 
<gallery perrow=4 caption='The following images are provided by AntWeb'>
File:Monomorium_dictator__casent0913573_d_1_high.jpg
 
 
File:Monomorium_dictator__casent0913573_h_1_high.jpg
 
File:Monomorium_dictator__casent0913573_h_1_high.jpg
 
File:Monomorium_dictator__casent0913573_p_1_high.jpg
 
File:Monomorium_dictator__casent0913573_p_1_high.jpg
 +
File:Monomorium_dictator__casent0913573_d_1_high.jpg
 
File:Monomorium_dictator__casent0913573_l_1_high.jpg
 
File:Monomorium_dictator__casent0913573_l_1_high.jpg
 
</gallery>
 
</gallery>
Line 47: Line 52:
 
{{Nomenclature}}
 
{{Nomenclature}}
 
*''<span style='color:red;font-weight:bold;'>dictator.</span> Monomorium (Xeromyrmex) bicolor'' st. ''dictator'' Santschi, 1937d: 224, figs. 20, 21 (w.q.) ANGOLA. Raised to species and material of the unavailable name ''impuriceps'' referred here: Bolton, 1987: 341.
 
*''<span style='color:red;font-weight:bold;'>dictator.</span> Monomorium (Xeromyrmex) bicolor'' st. ''dictator'' Santschi, 1937d: 224, figs. 20, 21 (w.q.) ANGOLA. Raised to species and material of the unavailable name ''impuriceps'' referred here: Bolton, 1987: 341.
 +
{{nomenplus}}
 +
 +
===Description===
 +
====Worker====
 +
Bolton (1987) - TL 2.9, HL 0.74-0.76, HW 0.57-0.59, CI 77-78, SL 0.62-0.63, SI 107-109, PW 0.40, AL 0.86 (3 measured).
 +
 +
Third and fourth (basal) tooth of mandible subequal in size, the latter very slightly smaller than the former but not reduced to a minute denticle. Median portion of clypeus with its anterior free margin shallowly concave and flanked by rounded blunt angles, without projecting sharp teeth at the apices of the clypeal carinae. Eyes of moderate size, the maximum diameter about 0.25 x HW and with 9-10 ommatidia in the longest row. Dorsal alitrunk without hairs but the first gastral tergite conspicuously pilose, with 6-8 pairs of evenly distributed hairs on the sclerite in front of the apical transverse row. Entirety of head and alitrunk reticulate-punctate. Head and alitrunk red to orange-red, the gaster blackish brown to black, without an orange or reddish patch mediobasally.
  
 +
===Type Material===
 +
Bolton (1987) - Syntype workers, female, Angola: Ebanga, 1932-33 (A. Monard) ({{NHMB}}) [examined].
 
<!--Un-comment this template when adding type specimen data
 
<!--Un-comment this template when adding type specimen data
 
===Type Material===
 
===Type Material===
Line 64: Line 78:
 
|notes=
 
|notes=
 
}}
 
}}
 
 
-->
 
-->
===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 341, raised to species, and material of the unavailable name impuriceps referred here.)
+
*[[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 341, raised to species, and material of the unavailable name impuriceps referred here.)
 
*Santschi, F. 1937d.  Résultats de la Mission scientifique suisse en Angola (2me voyage) 1932-1933. Fourmis angolaises. Rev. Suisse Zool. 44: 211-250 (page 224, figs. 20, 21 worker, queen described)
 
*Santschi, F. 1937d.  Résultats de la Mission scientifique suisse en Angola (2me voyage) 1932-1933. Fourmis angolaises. Rev. Suisse Zool. 44: 211-250 (page 224, figs. 20, 21 worker, queen described)
  
Line 76: Line 88:
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium dictator]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium dictator]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|dictator]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|dictator]]
[[category:Need Overview]][[category:Need Body Text]]
+
[[Category:Ssr]]

Latest revision as of 11:53, 13 July 2019

Monomorium dictator
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. dictator
Binomial name
Monomorium dictator
Santschi, 1937

Monomorium dictator casent0913572 p 1 high.jpg

Monomorium dictator casent0913572 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Monomorium dictator.

Identification

Bolton (1987) - M. dictator is closely related to Monomorium bicolor and Monomorium rufulum. It separates from the former by having the gaster much more densely hairy than in bicolor, and dictator lacks the very reduced fourth (basal) tooth on the mandible, which is characteristic of rufulum. Other members of the bicolor-complex, characterized together by their possession of dense reticulate-punctate sculpture on the head and alitrunk, and bicoloured body with the gaster blackish brown to black and the head and alitrunk reddish, separate from dictator as follows.

Monomorium westi, presently known only from Kenya, has the two longitudinal clypeal carinae terminating in freely projecting sharp teeth, not developed in dictator. Monomorium personatum, a species sympatric with dictator, has much larger eyes whose maximum diameter is 0.31-0.33 x HW, as opposed to 0.25 x HW in dictator. Monomorium hirsutum, known only from Ethiopia, has the dorsal alitrunk densely hairy; in dictator the alitrunk lacks standing hairs.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Angola (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.

  • dictator. Monomorium (Xeromyrmex) bicolor st. dictator Santschi, 1937d: 224, figs. 20, 21 (w.q.) ANGOLA. Raised to species and material of the unavailable name impuriceps referred here: Bolton, 1987: 341.

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 2.9, HL 0.74-0.76, HW 0.57-0.59, CI 77-78, SL 0.62-0.63, SI 107-109, PW 0.40, AL 0.86 (3 measured).

Third and fourth (basal) tooth of mandible subequal in size, the latter very slightly smaller than the former but not reduced to a minute denticle. Median portion of clypeus with its anterior free margin shallowly concave and flanked by rounded blunt angles, without projecting sharp teeth at the apices of the clypeal carinae. Eyes of moderate size, the maximum diameter about 0.25 x HW and with 9-10 ommatidia in the longest row. Dorsal alitrunk without hairs but the first gastral tergite conspicuously pilose, with 6-8 pairs of evenly distributed hairs on the sclerite in front of the apical transverse row. Entirety of head and alitrunk reticulate-punctate. Head and alitrunk red to orange-red, the gaster blackish brown to black, without an orange or reddish patch mediobasally.

Type Material

Bolton (1987) - Syntype workers, female, Angola: Ebanga, 1932-33 (A. Monard) (Naturhistorisches Museum, Basel) [examined].

References