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Aenictus minimus
| Aenictus minimus | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Dorylinae |
| Genus: | Aenictus |
| Species group: | minutulus |
| Species: | A. minimus |
| Binomial name | |
| Aenictus minimus Jaitrong & Hashimoto, 2012
| |
Aenictus minimus is known only from the type locality. The type series was collected from a disturbed forest in the daytime.
Identification
A member of the minutulus species group. Aenictus minimus is most similar in general appearance to Aenictus changmaianus and Aenictus minutulus (see Aenictus changmaianus for details).
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 14.9° to 14.9°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Oriental Region: Vietnam (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
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Castes
Known only from the worker caste.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- minimus. Aenictus minimus Jaitrong & Hashimoto, 2012: 34, figs. 3A-E, 7 (w.) VIETNAM.
- Type-material: holotype worker, 4 paratype workers.
- Type-locality: holotype Vietnam: Thai Nguyen, Na Hau Village, My Yen Comm. Forest, 8.xi.2001, VN01-SKY-29 (Sk. Yamane); paratypes with same data.
- Type-depositories: VNMN (holotype); SKYC, TNHM (paratypes).
- Status as species: Wong, M.K.L. & Guénard, 2016b: 37 (in key).
- Distribution: Vietnam.
Type Material
- Holotype, worker, My Yen Comm. Forest, Na Hau Village, Thai Nguyen, Vietnam, 9 November 2001, Sk. Yamane, VN01-SKY-29, Vietnam National Museum of Nature.
- Paratype, 4 workers, My Yen Comm. Forest, Na Hau Village, Thai Nguyen, Vietnam, 9 November 2001, Sk. Yamane, VN01-SKY-29, Sk. Yamane Collection at Kagoshima University, Japan and Natural History Museum of the National Science Museum, Thailand.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Measurements. Holotype: TL 2.15 mm; HL 0.50 mm; HW 0.44 mm; SL 0.28 mm; ML 0.66 mm; PL 0.15 mm; CI 88; SI 63. Paratypes (n = 4): TL 1.80–2.15 mm; HL 0.45–0.50 mm; HW 0.35–0.44 mm; SL 0.23–0.28 mm; ML 0.55–0.66 mm; PL 0.14–0.15 mm; CI 78–88; SI 63–64.
Holotype and paratypes - Head in full-face view subrectangular, clearly longer than broad, with feebly convex sides and shallowly concave posterior margin. Antennal scape reaching midlength of head in larger workers (not reaching midlength of head in smaller workers); antennal segment II longer than broad and almost as long as III+IV; III–VIII each broader than long; terminal segment distinctly longer than broad, 2.1 times as long as broad and longer than VII+VIII+IX. Frontal carina very short, not extending beyond the level of posterior margin of torulus. Masticatory margin of mandible with a large apical tooth followed by a medium-sized subapical tooth, 3–4 denticles, and a medium-sized basal tooth; basal margin with 1–2 small denticles next to basal tooth and followed by a larger denticle. Mesosoma in profile almost flat dorsally; metanotal groove indistinct or almost absent; metapleural gland bulla relatively large and transparent; distance between propodeal spiracle and metapleural gland bulla shorter than spiracular diameter (Fig. 3D). Propodeum in profile with straight dorsal outline; propodeal junction right-angled in larger workers (roundly convex in smaller workers); declivity of propodeum shallowly concave, with lateral carinae, but not demarcated basally by a transverse carina. Petiole slightly shorter than high, with its dorsal outline convex, slightly elevated posteriorly; subpetiolar process large, rectangular; anterior and posterior corners each acutely angulate. Postpetiole slightly shorter than petiole, its dorsal outline convex.
Head including mandible and antennal scape smooth and shiny; entire mesosoma smooth and shiny except mesopleuron, upper portions of metapleuron, and area between propodeal spiracle and metapleural gland bulla that are superficially reticulate. Petiole and postpetiole entirely smooth and shiny. Legs entirely smooth and shiny. Head and mesosoma dorsally with relatively dense standing hairs mixed with sparse short hairs over the surface; longest pronotal hair 0.07–0.08 mm long. Ground color yellow; typhlatta spot absent.
Etymology
The species epithet “minimus” is a Latin word meaning minimum. This refers to this species being the smallest within this species group.
References
- Jaitrong, W. & Hashimoto, Y. 2012. Revision of the Aenictus minutulus species group (Hymenoptera Formicidae Aenictinae) from Southeast Asia. Zootaxa 3426, 29-44.
References based on Global Ant Biodiversity Informatics
- Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
- Jaitrong, W., and Y. Hashimoto. "Revision of the Aenictus minutulus species group (Hymenoptera: Formicidae: Aenictinae) from Southeast Asia." Zootaxa 3426 (2012): 29-44.