Difference between revisions of "Monomorium torvicte"

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[[:File:Monomorium_torvicte__casent0235931_l_1_high.jpg|Specimen Labels]]
 
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The only known non-type collection of this species was made from a grassland litter sample.
  
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==Identification==
 
==Identification==
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Bolton (1987) - Closest related to ''[[Monomorium mavide]]'', another minute South African species. Differentiating characters of ''torvicte'' and ''mavide'' are given under the latter name.
  
 
{{Species identification keys}}
 
{{Species identification keys}}
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==Castes==
 
==Castes==
 
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File:Monomorium_torvicte__casent0902261_d_1_high.jpg
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{{Nomenclature}}
 
{{Nomenclature}}
 
*''<span style='color:red;font-weight:bold;'>torvicte.</span> Monomorium torvicte'' Bolton, 1987: 416 (w.) SOUTH AFRICA.
 
*''<span style='color:red;font-weight:bold;'>torvicte.</span> Monomorium torvicte'' Bolton, 1987: 416 (w.) SOUTH AFRICA.
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{{nomenplus}}
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===Description===
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====Worker====
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Holotype. TL 1.5, HL 0.45, HW 0.34, CI 76, SL 0.27, SI 79, PW 0.20, AL 0.44.
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Clypeal carinae distinctly developed, relatively close together posteriorly and widely divergent anteriorly, reaching the anterior clypeal margin. Prominent median portion of clypeus with its anterior margin transverse between the apices of the carinae, the anterior and lateral borders separated by an obtuse angle but lacking denticles or projections where the borders meet. Maximum diameter of eye 0.21 x HW and with 6 ommatidia in the longest row. Eye in full-face view distinctly far in front of the midlength of the sides of the head. In profile the eye elongate-oval, its long axis noticeably greater than its vertical axis. Antennal scapes, when laid straight back from their insertions, conspicuously failing to reach the occipital margin. Sides of head shallowly convex in full-face view, broadest at about the midlength; occipital margin broad and broadly, shallowly concave. Head in profile dorsoventrally flattened. Cephalic dorsum of holotype dented but in paratypes the ventral surface of the head is flat to very shallowly convex, the dorsum only slightly more convex than the ventre in profile. Promesonotal dorsum evenly shallowly convex in profile, curving downwards posteriorly to the conspicuously impressed metanotal groove. Metanotal cross-ribs distinct. Propodeal spiracle small and the propodeal dorsal outline convex behind the metanotal groove. Propodeum on a lower level than highest point of promesonotum and posteriorly rounding broadly and evenly into the declivity. Anterior peduncle of petiole short and stout, subtended by a short narrow strip-like anteroventral process which is truncated anteriorly. Node of petiole relatively low and broad in profile, broadly rounded above and with about the same degree of convexity as the postpetiolar dorsum. Postpetiole smaller and lower than the petiole node. All dorsal surfaces of head and body with standing hairs present. All available material somewhat abraded but the promesonotum probably with 5 pairs of standing hairs, of which the pair at the pro notal humeri is the longest. Sculpture absent except for minute hair-pit􀋹 and metanotal cross-ribs. Colour uniform dark brown.
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Paratypes. TL l.5-1.6, HL 0.44-0.45, HW 0.33-0.35, CI 75-80, SL 0.25-0.28, SI 76-80, PW 0.18-0.21, AL 0.42-0.45 (5 measured). Maximum diameter of eye 0.20-0.21 x HW. All specimens uniformly brown in colour but the shade varying from medium to dark. The lighter individuals may not have acquired full adult colour.
  
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===Type Material===
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Holotype worker, South Africa: Cape Town, vii. 1912, ex coli. S.A. Museum, G. Arnold, no. 155 (on underside of card) (E. Phillips) ({{BMNH}}). Paratypes. 6 workers and 1 female mounted on same card (BMNH). Holotype is third from right and is indicated by a small directional arrow on the card.
 
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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 416, worker described)
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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 416, worker described)
  
 
[[category:Species]]
 
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[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium torvicte]]
 
[[category:Formicidae]][[category:Myrmicinae]][[category:Solenopsidini]][[category:Monomorium]][[category:Monomorium torvicte]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|torvicte]]
 
[[category:Myrmicinae species]][[category:Solenopsidini species]][[category:Monomorium species|torvicte]]
[[category:Need Overview]][[category:Need Body Text]]
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[[Category:Ssr]]

Revision as of 20:16, 13 September 2019

Monomorium torvicte
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. torvicte
Binomial name
Monomorium torvicte
Bolton, 1987

Monomorium torvicte casent0235931 p 1 high.jpg

Monomorium torvicte casent0235931 d 1 high.jpg

Specimen Labels

The only known non-type collection of this species was made from a grassland litter sample.

Identification

Bolton (1987) - Closest related to Monomorium mavide, another minute South African species. Differentiating characters of torvicte and mavide are given under the latter name.

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.

  • torvicte. Monomorium torvicte Bolton, 1987: 416 (w.) SOUTH AFRICA.

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

Description

Worker

Holotype. TL 1.5, HL 0.45, HW 0.34, CI 76, SL 0.27, SI 79, PW 0.20, AL 0.44.

Clypeal carinae distinctly developed, relatively close together posteriorly and widely divergent anteriorly, reaching the anterior clypeal margin. Prominent median portion of clypeus with its anterior margin transverse between the apices of the carinae, the anterior and lateral borders separated by an obtuse angle but lacking denticles or projections where the borders meet. Maximum diameter of eye 0.21 x HW and with 6 ommatidia in the longest row. Eye in full-face view distinctly far in front of the midlength of the sides of the head. In profile the eye elongate-oval, its long axis noticeably greater than its vertical axis. Antennal scapes, when laid straight back from their insertions, conspicuously failing to reach the occipital margin. Sides of head shallowly convex in full-face view, broadest at about the midlength; occipital margin broad and broadly, shallowly concave. Head in profile dorsoventrally flattened. Cephalic dorsum of holotype dented but in paratypes the ventral surface of the head is flat to very shallowly convex, the dorsum only slightly more convex than the ventre in profile. Promesonotal dorsum evenly shallowly convex in profile, curving downwards posteriorly to the conspicuously impressed metanotal groove. Metanotal cross-ribs distinct. Propodeal spiracle small and the propodeal dorsal outline convex behind the metanotal groove. Propodeum on a lower level than highest point of promesonotum and posteriorly rounding broadly and evenly into the declivity. Anterior peduncle of petiole short and stout, subtended by a short narrow strip-like anteroventral process which is truncated anteriorly. Node of petiole relatively low and broad in profile, broadly rounded above and with about the same degree of convexity as the postpetiolar dorsum. Postpetiole smaller and lower than the petiole node. All dorsal surfaces of head and body with standing hairs present. All available material somewhat abraded but the promesonotum probably with 5 pairs of standing hairs, of which the pair at the pro notal humeri is the longest. Sculpture absent except for minute hair-pit􀋹 and metanotal cross-ribs. Colour uniform dark brown.

Paratypes. TL l.5-1.6, HL 0.44-0.45, HW 0.33-0.35, CI 75-80, SL 0.25-0.28, SI 76-80, PW 0.18-0.21, AL 0.42-0.45 (5 measured). Maximum diameter of eye 0.20-0.21 x HW. All specimens uniformly brown in colour but the shade varying from medium to dark. The lighter individuals may not have acquired full adult colour.

Type Material

Holotype worker, South Africa: Cape Town, vii. 1912, ex coli. S.A. Museum, G. Arnold, no. 155 (on underside of card) (E. Phillips) (The Natural History Museum). Paratypes. 6 workers and 1 female mounted on same card (BMNH). Holotype is third from right and is indicated by a small directional arrow on the card.

References