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Monomorium marjoriae
| Monomorium marjoriae | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Solenopsidini |
| Genus: | Monomorium |
| Species: | M. marjoriae |
| Binomial name | |
| Monomorium marjoriae DuBois, 1986 | |
Known only from the type material. Nothing is known about the biology of Monomorium marjoriae.
Identification
DuBois (1986) - A member of the Monomorium minimum species group. Queen Winged; scutum and scutellum not depressed; metanotum (in lateral view) projecting to level of propodeum and scutellum; propodeum angular (basal face 2 X length of declivitous face). Worker Propodeum angular (basal face 2 X length of declivitous face); mesopleuron not punctuate.
Monomorium marjoriae is most likely to be confused with Monomorium cyaneum or Monomorium compressum which may occur in similar habitats. Additionally, M. marjoriae closely resembles Monomorium ebeninum in habitus; however, these species do not appear to overlap. Queens of M. marjoriae may be separated from those of M. compressum and M. ebeninum since in the latter two species the scutum and scutellum are concave or flat. Queens of M. marjoriae may be separated from those of M. cyaneum since the latter are wingless and the former have a propodeum with the length of the basal face 2 X the length of the declivitous face. Workers of M. marjoriae may be separated from workers of these other species since they possess a propodeum with the basal face length 2 X the declivitous face length.
Keys including this Species
- Key to Monomorium males of the New World
- Key to Monomorium queens of the New World
- Key to Monomorium workers of the New World
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 23.755833° to 19.45222222°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Mexico (type locality).
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Countries Occupied
| Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species. |
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Estimated Abundance
| Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species. |
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Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- marjoriae. Monomorium marjoriae DuBois, 1986: 111, figs. 149-154 (w.q.) MEXICO (Nayarit).
- Type-material: holotype queen, 9 paratype workers, 2 paratype queens.
- Type-locality: holotype Mexico: Nayarit, Punga, 26.v.1923 (H.C. Millender).
- Type-depository: USNM.
- Status as species: Bolton, 1995b: 264; Fernández, 2007b: 137.
- Distribution: Mexico.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Head. (representing type locality; N=2) HL 0.55-0.61 (0.58), HW 0.45-0.46 (0.46), SL 0.41-0.45 (0.43), EL 0.08-0.09 (0.08), MOD 0.05-0.06 (0.06). Structure—CI 75-82 (78), SIL 74-75 (74), SIW 89-98 (94). Scape reaching or surpassing occiput by an amount less than length of pedicel. Pilosity—Setae erect to subdecumbent on clypeus, frons, gular region, mandible, and occiput, decumbent to appressed elsewhere. Alitrunk. PW 0.26-0.28 (0.27), PL 0.24-0.25 (0.24), WL 0.65-0.68 (0.66). Structure—Propedeum angular, basal face 2X length of declivitous face. PI 35-38 (36). Postpetiole. Moderately dense, non-piliferous punctures on posterior surface of node. Color. Head brown to dark brown, mandible and antenna brown to yellow brown. Alitrunk brown, legs yellow brown to yellow. Petiole, postpetiole, and gaster brown to dark brown. All setae white.
Queen
As described for Monomorium minimum except as follows. Head: (representing type locality; N=3) HL 0.75-0.81 (0.78) {0.81}, HW 064-0.68 (0.67) {0.68}, SL 0.52-0.61 (0.56) {0.61}, IOD 0.16-0.18 (0.17) {0.17}, OD 0.04-0.05 (0.05) {0.05}, EL 0.16-0.22 (0.19) {0.22}, MOD 0.12-0.17 (0.14) {0.17}. Structure—CI 84-87 (85) {84}, SIL 67-75 (72) {75}, SIW 76-90 (84) {90}. Side of head straight. Scape reaching or surpassing occiput by less than length of pedicel. Pilosity—Setae erect to subdecumbent on clypeus, frons, gular region, mandible, and occiput, decumbent to appressed elsewhere. Sculpture—Small, parallel, longitudinal rugae beginning all along lateral margin of clypeus, extending past antennal insertion, and converging with frontal carina. Several small, parallel, longitudinal rugae beginning between clypeal teeth, extending to level of antennal insertion. Several small, parallel, longitudinal rugae beginning between frontal carinae (near posterior edge of carinae) and extending towards (but not reaching) anterior ocellus. Alitrunk. PW 0.40-0.48 (0.43) {0.48}, PL 0.26-0.40 (0.34) {0.26}, WL 1.30-1.40 (1.35) {1.30}. Structure—Mesopleural suture deflected dorsally at each end (resulting in U-shaped suture), with pits lacking on both ends. Propodeum angular, basal face 2 X length of declivitous face. PI 20-30 (26) {20}. Pilosity—Fewer than 30 erect to suberect setae projecting above dorsal outline of alitrunk. PETIOLE. Setae appressed on anterior surface of node, suberect to erect (a few decumbent) on side, dorsum, and posterior surface of node, absent elsewhere. Postpetiole: Setae appressed on anterior surface of node, suberect to erect elsewhere (including venter). Anterior surface and dorsum of node smooth and shining with small piliferous punctures; remainder covered with, moderately dense, non-piliferous punctures. Gaster: Setae of first gastral tergite not reaching level of dorsum of postpetiolar node. Color: Head (including mandible and antenna) brown to dark brown. Alitrunk brown to dark brown, legs brown to yellow brown. Petiole, postpetiole, and gaster brown to dark brown. All setae white.
Type Material
Holotype Queen: Mexico. Nayarit; Punga, May 26, 1923, H. C. Millender. Holotype (National Museum of Natural History) bears red, handwritten label: Monomorium marjoriae Holotype M. DuBois 1983. Two paratype queens and 9 paratype workers collected with holotype. All paratypes bear blue, handwritten labels: Monomorium marjoriae Paratype M. DuBois 1983.
Etymology
This species is named in honor of my mother, Marjorie A. (Black) DuBois.
References
References based on Global Ant Biodiversity Informatics
- Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
- DuBois M. B. 1986. A revision of the native New World species of the ant genus Monomorium (minimum group) (Hymenoptera: Formicidae). Univ. Kans. Sci. Bull. 53: 65-119
- Fernandes, P.R. XXXX. Los hormigas del suelo en Mexico: Diversidad, distribucion e importancia (Hymenoptera: Formicidae).
- Flores-Maldonado K. Y., S. A. Phillips, and G. Sanchez-Ramos. 1999. The myrmecofauna (Hymenoptera: Formicidae) along an altitudinal gradient in the Sierra Madre Oriental of Northeastern Mexico. The Southwestern Naturalist 44(4): 457-461.
- Flores-Maldonado, K. Y., S. A. Phillips-Jr, and G. Sanchez-Ramos. 1999. The myrmecofauna (Hymenoptera: Formicidae) along an altitudinal gradient in the Sierra Madre Oriental of Northeastern Mexico. The Southwestern Naturalist 44: 457-461.
- Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133