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Carebara parva
| Carebara parva | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Crematogastrini |
| Genus: | Carebara |
| Species group: | pygmaea |
| Species: | C. parva |
| Binomial name | |
| Carebara parva Wimolsuthikul & Jaitrong, 2024 | |
The type series of Carebara parva was collected from a rotting log at the forest edge in southern Thailand.
Photo Gallery
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Identification
Major Head and gastral tergite I with dense erect hairs mixed with decumbent hairs; promesonotum with sparse short erect hairs; with head in full-face view, posterior one-third with transverse striation, while anterior two-thirds with longitudinal striation; eye small, with ca. 5–6 ommatidia; gastral tergite I somewhat smooth and shiny; propodeal spine almost as long as or slightly longer than diameter of propodeal spiracle.
Minor Propodeal dorsum smooth and shiny; petiole and postpetiole without hairs; propodeal junction bluntly angulate; body yellowish brown; smallest species found in Thailand (HW 0.79–0.83 mm in major worker; 0.36–0.4 mm in minor worker).
Carebara parva' is closely related to Carebara bokorensis and Carebara panhai, sharing characteristics such as erect hairs on the head and gastral tergite I in the major worker. As the smallest species in the group found in Thailand, it can be separated from C. bokorensis by the following characteristics in the major worker:
- gastral tergite I smooth and shiny (punctate in C. bokorensis)
- posterior one-third of head with irregular striation (punctate, without striation in C. bokorensis)
- erect hairs on head and first gastral tergite I sparse and short (dense and long erect hairs in C. bokorensis, see figs 3 and 8 for comparison)
- promesonotum weakly convex (distinctly convex to form a dome in C. bokorensis, see figs 3 and 8 for comparison)
- mesosomal dorsum without erect hairs (with dense erect hairs in C. bokorensis).
This species is also similar to C. panhai but can be separated from the latter by the following characteristics:
- in major worker, posterior one-third of head with irregular striation (posterior one-third of head with striation in C. panhai, see figs. 6C and 8C for comparison)
- in major worker, promesonotum weakly convex (distinctly convex to form a dome in C. panhai, see figs. 6A and 8A for comparison)
- in minor worker, scape shorter, reaching posterolateral corner of head (slightly extending posterolateral corner of head in C. panhai)
Keys including this Species
Distribution
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Latitudinal Distribution Pattern
Latitudinal Range: 9.2° to 8.5°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: Wimolsuthiku et al. (2024)
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. |
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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.
- parva. Carebara parva Wimolsuthikul & Jaitrong, 2024: 90, figs. 8, 9, 13 (s.w.) THAILAND.
Type Material
- Holotype major worker (THNHM-I-00014199, THNHM), southern Thailand, Surat Thani Province, Wipawadee District, Takuktai Subdistrict, 9.246468ºN, 98.946136ºE, 69 m a.s.l., 29.XII.2001, W. Jaitrong leg., WJT291201-10.
- Paratypes: 2 major workers (THNHM-I-00014200, SKYC and THNHM-I-00019027, THNHM) and 5 minor workers (THNHM-I-00019028 to THNHM-I-00019031, THNHM; THNHM-I-00014201, SKYC), same data as holotype.