Erromyrma latinodis

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Erromyrma latinodis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Erromyrma
Species: E. latinodis
Binomial name
Erromyrma latinodis
(Mayr, 1872)

Monomorium latinode casent0132440 profile 1.jpg

Monomorium latinode casent0132440 dorsal 1.jpg

Specimen Label

Synonyms


Common Name
Shiwa-hime-ari
Language: Japanese

Distributed widely in pantropical and subtropical regions through human activity. In Oman, a nest series was found under a pomegranate tree. Several workers were collected from under a rock where the soil was dry and loose and in an area in cultivated rose plantations. Individuals were also found among leaf litter where soil was dry (Sharaf et al 2018). In Madagascar, Heterick (2006) reports that apart from an excellent series from the Province Fianarantsoa and a small number from Province Antsiranana (Museum of Comparative Zoology) from tropical and lowland rainforest, I have seen no other Malagasy material pertaining to this tramp species. Malagasy specimens have been collected on low vegetation and on the ground. In the Malagasy region this species inhabits montane rainforest, mangrove, Uapaca woodland, dry forest, and anthropogenic habitats from elevations of 2 to 1726 m. Workers were collected from a range of microhabitats and methods including foraging on low vegetation, on the ground, in ground nests, sifted litter, under stones, rotten wood or from dead twigs above ground. The males were collected along with workers and queens under the bark on the main trunk of a mango tree along a village road (Ramamonjisoa et al., 2023).

At a Glance • Invasive  

Identification

Heterick (2006) - Malagasy region: Appearance somewhat suggestive of taxa from the Australasian Chelaner rubriceps species group. However, none of the latter has a PF of 3,3. The type specimens for the nominal taxa currently associated with E. latinode (i.e., E. latinode, E. latinode bruneum and E. voeltzkowi) show variation in color and size, and the lectotype of E. latinode also exhibits some differences in the appearance of the head capsule.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 30.2483° to -12.11666667°.

   
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Afrotropical Region: Comoros, Mozambique, Saint Helena, United Republic of Tanzania.
Australasian Region: New Zealand.
Indo-Australian Region: Borneo (type locality), Indonesia, Malaysia, Singapore.
Malagasy Region: Madagascar, Mayotte.
Oriental Region: Bangladesh, India, Sri Lanka, Thailand.
Palaearctic Region: China, Japan, Oman.

Distribution based on AntMaps

AntMapLegend.png

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

Ramamonjisoa et al. (2023), discussing this species in the Malagasy region: The males for this species were only collected after six expeditions. They are not collected by traditional means for example: malaise traps sampling or UV light samples from the region. Initial expeditions to known localities in northern Madagascar did not find the males. Colonies were kept alive for over a year without the production of males. Two males were finally found at one of the known collection sites.

The C01 data confirms the identification of the males and also shows a pattern of 0% sequence divergence between the samples from Madagascar, Comoros, and Mayotte. The lack of sequence divergence across island systems supports the hypothesis that this species is introduced in the region. Low sequence diversity could also be explained by other factors such as reproductive systems. The difficulty of finding males could be linked to a reproductive system that would reduce sequence divergence.

Association with Other Organisms

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  • This species is a mutualist for the aphid Aphis craccivora (a trophobiont) (Rakhshan and Ahmad, 2015; Saddiqui et al., 2019).

Castes

Worker

Images from AntWeb

Monomorium latinode casent0010941 head 1.jpgMonomorium latinode casent0010941 profile 1.jpgMonomorium latinode casent0010941 dorsal 1.jpgMonomorium latinode casent0010941 label 1.jpg
Worker. Specimen code casent0010941. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by NHMUK, London, U.K..
Monomorium latinode casent0107541 head 1.jpgMonomorium latinode casent0107541 profile 1.jpgMonomorium latinode casent0107541 dorsal 1.jpgMonomorium latinode casent0107541 label 1.jpg
Worker. Specimen code casent0107541. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.
Monomorium latinode casent0132440 head 1.jpgMonomorium latinode casent0132440 profile 1.jpgMonomorium latinode casent0132440 dorsal 1.jpgMonomorium latinode casent0132440 label 1.jpg
Worker. Specimen code casent0132440. Photographer Erin Prado, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.
Monomorium latinode casent0008632 head 1.jpgMonomorium latinode casent0008632 profile 1.jpgMonomorium latinode casent0008632 dorsal 1.jpgMonomorium latinode casent0008632 label 1.jpg
Worker. Specimen code casent0008632. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by MSNG, Genoa, Italy.
Monomorium latinode casent0101591 head 1.jpg
Paralectotype of Monomorium voeltzkowiWorker. Specimen code casent0101591. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
Monomorium latinode casent0101621 dorsal 1.jpg
Lectotype of Monomorium voeltzkowiWorker. Specimen code casent0101621. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
Monomorium latinode casent0101928 dorsal 1.jpg
Paralectotype of Monomorium voeltzkowiWorker. Specimen code casent0101928. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
  • Ramamonjisoa et al. (2023), Figure 2. Erromyrma latinodis male (CASENT0788835). A, body in lateral view. B, head in full-face view. C, body in dorsal view.
  • Ramamonjisoa et al. (2023), Figure 3. Male forewing veins of Erromyrma latinodis (CASENT0788835). Abbreviations: Pt, pterostigma; Sc, subcosta; R, r, radius; Rs, rs, radial sector; M, m, media; Cu, cubitus; A, a, anal.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • latinodis. Monomorium latinode Mayr, 1872: 152 (w.) BORNEO (East Malaysia: Sarawak).
    • Type-material: syntype workers (number not stated).
    • Type-locality: Malaysia (“Borneo”): Sarawak, 1865-66 (J. Doria & O. Beccari).
    • Type-depositories: BMNH, NHMW.
    • [Misspelled as latnoda by Smith, F. 1873: ix.]
    • Combination in Erromyrma: Fisher & Bolton, 2016: 276.
    • Imai, et al. 1984: 8 (k.).
    • Status as species: Smith, F. 1873: ix; Forel, 1885b: 182; Emery, 1887b: 458; Emery, 1889b: 503; Dalla Torre, 1893: 67; Forel, 1903a: 687; Rothney, 1903: 97; Bingham, 1903: 211; Forel, 1907a: 19; Wheeler, W.M. 1909d: 334; Yano, 1910: 419; Forel, 1912a: 55; Forel, 1913f: 191; Viehmeyer, 1916a: 132; Wheeler, W.M. 1919e: 84; Emery, 1922e: 171; Wheeler, W.M. 1927d: 5; Wheeler, W.M. 1929g: 60; Wheeler, W.M. 1930a: 99; Wheeler, W.M. 1930h: 66; Wheeler, W.M. 1934h: 13; Wheeler, W.M. 1935g: 23; Teranishi, 1940: 57; Chapman & Capco, 1951: 165; Ettershank, 1966: 90; Wilson & Taylor, 1967: 66; Onoyama, 1980: 198; Bolton, 1987: 429 (redescription); Ogata, 1991b: 107; Morisita, et al. 1992: 40; Bolton, 1995b: 263; Wu, J. & Wang, 1995: 88; Tiwari, 1999: 54; Imai, et al. 2003: 133; Lin & Wu, 2003: 66; Ghosh, et al. 2005: 27; Jaitrong & Nabhitabhata, 2005: 28; Heterick, 2006: 108 (redescription); Don, 2007: 190; Wetterer, Epadaler, Ashmole, et al. 2007: 31; Framenau & Thomas, 2008: 69; Terayama, 2009: 153; Pfeiffer, et al. 2011: 47; Guénard & Dunn, 2012: 45; Bharti, Guénard, et al. 2016: 39; Fisher & Bolton, 2016: 276; Sharaf, Fisher, et al. 2018: 25; Dias, R.K.S. et al. 2020: 74.
    • Senior synonym of bruneum: Bolton, 1987: 429; Heterick, 2006: 108.
    • Senior synonym of voeltzkowi: Bolton, 1987: 429; Heterick, 2006: 108.
    • Distribution [tramp species]:
    • Afrotropical: Mozambique, Tanzania.
    • Austral: New Zealand.
    • Malagasy: Comoros, Madagascar, Mayotte I.
    • Malesian: Hawaii Is, Indonesia (Java, Sumatra), Malaysia (Sarawak), Singapore.
    • Oriental: Bangladesh, China, Christmas I., India, Japan, Myanmar, Sri Lanka, Taiwan, Thailand.
    • Palaearctic: Oman, Netherlands, St Helena I.
  • bruneum. Monomorium latinode var. bruneum Emery, 1893f: 243 (w.) SRI LANKA.
    • Type-material: syntype workers (number not stated).
    • Type-locality: Sri Lanka (“Ceylon”): Kandy, i.-ii.1892 (E. Simon).
    • Type-depository: MSNG.
    • Subspecies of latinodis: Emery, 1895k: 465; Forel, 1903a: 687; Emery, 1922e: 171; Chapman & Capco, 1951: 165; Ettershank, 1966: 88.
    • Junior synonym of latinodis: Bolton, 1987: 429; Heterick, 2006: 108.
  • latinodoides. Monomorium latinodoides Wheeler, W.M. 1928c: 17 (w.q.) CHINA (Hong Kong).
    • Type-material: 5 syntype worlkers, 1 syntype queen.
    • Type-locality: China: Hong Kong, Kowloon (F. Silvestri).
    • Type-depository: MCZC.
    • Status as species: Wheeler, W.M. 1930h: 67; Chapman & Capco, 1951: 167; Ettershank, 1966: 90; Bolton, 1995b: 263; Guénard & Dunn, 2012: 45.
    • Junior synonym of latinodis: Ramamonjisoa et al., 2023: 66.
  • voeltzkowi. Monomorium voeltzkowi Forel, 1907g: 78 (w.) TANZANIA (Pemba I.).
    • Type-material: syntype workers (number not stated).
    • Type-locality: Tanzania (“Ostafrika”): Pemba I., Chake-Chake (A. Voeltzkow).
    • Type-depositories: MCZC, MHNG.
    • Status as species: Emery, 1922e: 180; Wheeler, W.M. 1922a: 867; Ettershank, 1966: 93.
    • Junior synonym of latinodis: Bolton, 1987: 429; Heterick, 2006: 108.

Type Material

  • Monomorium latinode: Heterick (2006) - Lectotype: worker, Borneo Sarawak (Malaysia), G. Doria (The Natural History Museum). A single carded worker labeled syntype is here designated lectotype to fix the name for populations of E. latinode, which has a more convex outline to the vertex than E. latinode bruneum or E. voeltzkowi. Other syntype specimens may still exist (seen by Bolton in 1987), and these should be treated as paralectotypes.
  • Monomorium latinodoides: Syntype worker: China: Hong Kong, Kowloon (F. Silvestri) unique specimen identifier: MCZ-ENT00727982, examined by Ramamonjisoa et al. (2023), Museum of Comparative Zoology.

Taxonomic Notes

Monomorium latinodoides (Ramamonjisoa et al. (2023)) - The type series at MCZ was examined. The syntypes series are labeled “Kowloon” (F. Silvestri): one pin with 3 workers (MCZ-ENT00020883) and 2 workers and one dealate queen on a second pin (MCZ-ENT00727982). The workers match the description and diagnosis of worker of E. latinodis. We formally combine the species in Erromyrma and synonymize the species with E. latinodis. However, we exclude the queen (on MCZ-ENT00727982) from the syntype series; it belongs to the genus Carebara. Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Heterick (2006) - Lectotype (M. latinode): HML 2.02 HL 0.72 HW 0.59 CeI 81 SL 0.60 SI 103 PW 0.42. Lectotype (Monomorium latinode bruneum): HML 2.03 HL 0.73 HW 0.59 CeI 81 SL 0.56 SI 95 PW 0.46. Lectotype (Monomorium voeltzkowi): HML 1.66 HL 0.60 HW 0.46 CeI 77 SL 0.46 SI 100 PW 0.36. (non-types): HML 1.83–2.29 HL 0.65–0.83 HW 0.52–0.73 CeI 79–88 SL 0.50–0.62 SI 85–98 PW 0.38–0.49 (n=20).

HEAD: Head oval; vertex weakly convex; frons shining and smooth except for piliferous pits; pilosity of frons a mixture of well-spaced, distinctly longer erect and semi-erect setae interspersed with shorter decumbent setae or setulae. Eye moderate, eye width 1–1.5× greatest width of antennal scape; (in full-face view) eyes set below midpoint of head capsule; (viewed in profile) eyes set posteriad of midline of head capsule; eye elliptical, curvature of inner eye margin may be more pronounced than that of its outer margin. Antennal segments 12; antennal club three-segmented. Clypeal carinae weakly to strongly defined; anteromedian clypeal margin straight, or, emarginate, clypeal carinae terminating in blunt angles; paraclypeal setae moderately long and fine, curved; posteromedian clypeal margin extending slightly beyond level of posterior margin of antennal fossae. Anterior tentorial pits situated nearer antennal fossae than mandibular insertions. Frontal lobes straight, parallel. Psammophore absent. Palp formula 3,3. Mandibular teeth five; mandibles triangular and smooth (except for piliferous pits); masticatory margin of mandibles approximately vertical or weakly oblique; basal tooth smaller than t4 (five teeth present).

MESOSOMA: Promesonotum shining and smooth on dorsum, entire lower mesopleuron distinctly striolate; (viewed in profile) anterior promesonotum smoothly rounded, thereafter more-or-less flattened, promesonotum on same plane as propodeum; promesonotal setae greater than twelve; standing promesonotal setae consisting of well-spaced, incurved, erect and semi-erect setae only; appressed promesonotal setulae very sparse or absent. Metanotal groove vestigial. Propodeum uniformly finely striolate; propodeal dorsum flat throughout most of its length; propodeum smoothly rounded or with indistinct angle; standing propodeal setae numerous, wholly or mainly erect or suberect, without conspicuous paired setae evident; appressed propodeal setulae very sparse or absent; propodeal spiracle equidistant from metanotal groove and declivitous face of propodeum. Vestibule of propodeal spiracle distinct in some specimens. Propodeal lobes present as blunt-angled flanges.

PETIOLE AND POSTPETIOLE: Petiolar spiracle lateral and situated within anterior sector of petiolar node; node (viewed in profile) conical, vertex rounded; appearance of node shining and smooth throughout; ratio of greatest node breadth (viewed from front) to greatest node width (viewed in profile) between 4:3 and1:1; anteroventral petiolar process absent or vestigial; ventral petiolar lobe absent; height ratio of petiole to postpetiole between 4:3 and 1:1; height–length ratio of postpetiole between 4:3 and 1:1; postpetiole shining and smooth; postpetiolar sternite depressed near its junction with gaster, and sloping anteriad at angle of 45–60 to form large conspicuous lip at its anterior end.

GASTER: Pilosity of first gastral tergite consisting of well-spaced, erect and semi-erect setae interspersed with a few appressed setulae.

GENERAL CHARACTERS: Color head, mesosoma and appendages brownish-yellow, gaster brown. Worker caste monophasically allometric, i.e., with variable size, but not morphology among workers from same nest.

Karyotype

  • 2n = 70 (India) (Imai et al., 1984) (as Monomorium latinode).

References

References based on Global Ant Biodiversity Informatics

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