.jpg){kind=logo}
Ooceraea siamensis
| Ooceraea siamensis | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Dorylinae |
| Genus: | Ooceraea |
| Species: | O. siamensis |
| Binomial name | |
| Ooceraea siamensis Jaitrong, Yamane & Wiwatwitaya, 2021 | |
The single known colony of this species was collected from a fruit orchard near a house, nesting in soil.
Identification
Worker. Body small (head width 0.33–0.38 mm), reddish brown (light brown in some paratypes); antenna 9-segmented; propodeal declivity shallowly concave and encircled with distinct rim; dorsal and lateral faces of head, mesosoma, petiole, postpetiole and abdominal tergite IV (= first gastral tergite) finely and shallowly foveolate; foveae on first gastral tergite smaller than those of head and mesosoma; propodeal declivity smooth and shiny.
Dealate queen. Similar to worker in structure, sculpture, coloration and pilosity, but the body size is slightly larger; eye and ocelli are present.
Ooceraea siamensis is most similar to Ooceraea biroi (see specimen codes CASENT0916710 and CASENT0907059 on AntWeb, 2021) in having a slender body and 9-segmented antenna. However, O. siamensis can be distinguished from O. biroi by the following characteristics: 1) postpetiole slightly longer than broad in dorsal view (clearly shorter than broad in O. biroi); 2) foveae on first gastral tergite and sternite denser and coarser (weak in O. biroi); 3) smaller body size (HW 0.33–0.38 in O. siamensis; 0.46–0.49 mm in O. biroi).
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: 7° to 7°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: Jaitrong et al., 2021
Distribution based on Regional Taxon Lists
Oriental Region: Thailand (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. |
|
Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- siamensis. Ooceraea siamensis Jaitrong et al., 2021: 6, figs. 3, 4 (w.q.) THAILAND.
Type Material
- Holotype: worker (THNHM-I-02628, THNHM), Thailand: Trang Province, Palian District, Ban Nong Malai, near a house, 23.XII 2018, W. Jaitrong leg., colony no. WJT231218-8.
- Paratypes: twenty-four workers [SKYC (THNHM-I-19127 and THNHM-I-19128) and THNHM (THNHM-I-19105 to THNHM-I-19126)] and 2 dealate queens (THNHM, THNHM-I-02626 and THNHM I-19104), same data as holotype.