Strumigenys inhonesta

Strumigenys inhonesta
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Attini
Genus:	Strumigenys
Species:	S. inhonesta
Binomial name
Strumigenys inhonesta Bolton, 2000 Specimen Labels

Known from a small number of collections from wet forest. One was a nest collection from a clay bank and another was made from the litter.

Identification

Bolton (2000) – A member of the Strumigenys akalles-group. See notes under Strumigenys akalles.

Keys including this Species

• Key to Strumigenys of East Asia

Distribution

Tang & Guenard (2023) - The record of S. inhonesta in Thailand extends its native range 1500 km eastward and represents the first record of this species within continental Asia. Its presence in other parts of the Indochinese Peninsula, such as Peninsular Malaysia is likely.

Latitudinal Distribution Pattern

Latitudinal Range: 7.5° to 4.95°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia (type locality), Malaysia, Philippines, Sulawesi.
Oriental Region: Thailand.

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.

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.

Biology

Expand Explore Overview of Strumigenys biology  Strumigenys were once thought to be rare. The development and increased use of litter sampling methods has led to the discovery of a tremendous diversity of species. Many species are specialized predators (e.g. see Strumigenys membranifera and Strumigenys louisianae). Collembola (springtails) and other tiny soil arthropods are typically favored prey. Species with long linear mandibles employ trap-jaws to sieze their stalked prey (see Dacetine trap-jaws). Larvae feed directly on insect prey brought to them by workers. Trophallaxis is rarely practiced. Most species live in the soil, leaf litter, decaying wood or opportunistically move into inhabitable cavities on or under the soil. Colonies are small, typically less than 100 individuals but in some species many hundreds. Moist warm habitats and micro-habitats are preferred. A few better known tramp and otherwise widely ranging species tolerate drier conditions. Foraging is often in the leaf litter and humus. Workers of many species rarely venture above ground or into exposed, open areas. Individuals are typically small, slow moving and cryptic in coloration. When disturbed individuals freeze and remain motionless. Males are not known for a large majority of species. ‎

Castes

Worker

.	Owned by Museum of Comparative Zoology.

Nomenclature

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

• inhonesta. Strumigenys inhonesta Bolton, 2000: 749 (w.) INDONESIA (Sulawesi).

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 2.2, HL 0.58, HW 0.47, CI 81, ML 0.16, MI 28, SL 0.30, SI 64, PW 0.26, AL 0.60. In full-face view with mandibles fully closed the length of the left preapical tooth is distinctly less than the distance between the base of the tooth and the base of the mandible. Leading edge of scape with fine projecting hairs, the longest of them slightly greater than the maximum width of the scape. Dorsolateral margin of head with abundant freely laterally projecting hairs that are fine, soft and relatively short, shallowly curved and shorter than the length of the scape. Erect hairs on cephalic dorsum and promesonotum fine and soft, relatively short but flexuous to sub flagellate. Clypeus with fine granular to punctulate sculpture, not as strongly sculptured as cephalic dorsum. Promesonotal dorsum finely densely punctulate everywhere.

Paratype. TL 2.1, HL 0.56, HW 0.44, CI 79, ML 0.14, MI 25, SL 0.28, SI 64, PW 0.24, AL 0.58.

Dimensions of non-paratypic workers. HL 0.58-0.60, HW 0.47-0.49, CI 80-82, ML 0.15-0.16, MI 25-27, SL 0.30-0.32, SI 63-67 (3 measured).

Type Material

Holotype worker, Indonesia: Sulawesi Tengah, n r Morowali, Ranu Riv. Area, 27.i.-20.iv.1980, BM 1980-280 (M. J. D. Brendell) (The Natural History Museum).

Paratype. 1 worker with same data as holotype (Museum of Comparative Zoology).

References

• Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 749, worker described)
• Tang, K. L., Guénard, B. 2023. Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species. European Journal of Taxonomy 907, 1–144 (doi:10.5852/ejt.2023.907.2327).

References based on Global Ant Biodiversity Informatics

• Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
• Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040789
• Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040898
• Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
• Woodcock P., D. P. Edwards, T. M. Fayle, R. J. Newton, C. Vun Khen, S. H. Bottrell, and K. C. Hamer. 2011. The conservation value of South East Asia's highly degraded forests: evidence from leaf-litter ants. Phil. Trans. R. Soc. B. 366: 3256-3264.
• Woodcock P., D.P. Edwards, T.M. Fayle, R.J. Newton, C. Vun Khen, S.H. Bottrell, and K.C. Hamer. 2011. The conservation value of South East Asia's highly degraded forests: evidence from leaf-litter ants. Phil. Trans. R. Soc. B 366: 3256-3264.