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Myopias crawleyi
| Myopias crawleyi | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Ponerinae |
| Tribe: | Ponerini |
| Genus: | Myopias |
| Species: | M. crawleyi |
| Binomial name | |
| Myopias crawleyi (Donisthorpe, 1941) | |
| Synonyms | |
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In Thailand, specimens of this species were collected from rotten wood in dry evergreen forest, elevation about 500–800 m. (Jaitrong, Tasen & Guénard, 2018)
Identification
Jaitrong, Tasen & Guénard (2018) - Body 5.70–5.85 mm in total length (medium size). Masticatory margin of mandibles with five teeth and/or denticles; basal margin with an ill-defined protuberance; median clypeal lobe slightly broader than long, subtriangular, widened forward, its anterior margin weakly concave; eyes relatively large with 10-11 ommatidia along the longest axis; antennal scape relatively long, almost reaching posterior margin of head; in profile, anteroventral corner of head with bluntly angled process; petiole subrectangular, slightly shorter than high; subpetiolar process well developed, with concave ventral outline, with a downward pointed triangular denticle at anteroventral corner, and with a small posteriorly pointed denticle at posteroventral corner. Dorsum of head with fine dense punctures, with area between punctures smooth and shiny; dorsum of mesosoma and petiole with sparse punctures; mesopleuron, lateral face and declivity of propodeum smooth and shiny; metasoma segment III dense foveae; metasoma segment IV with sparse small punctures, areas between punctures smooth and shiny. Body entirely reddish brown to dark brown.
Thailand Myopias species: Myopias crawleyi is similar to Myopias sakaeratensis in having reddish brown to dark brown body colour; anteroventral corner of head with bluntly angled process; anterior margin of median clypeal lobe weakly concave and other general appearance. However, M. crawleyi is easily separated from M. sakaeratensis by the following characteristics: mesopleron and lateral face of propodeum smooth and shiny (sculptured in M. sakaeratensis); propodeal declivity smooth and shiny (reticulate in M. sakaeratensis); posterior ¾ of subpetiolar process triangular, its ventral outline almost straight (posterior ¾ of subpetiolar process rectangular, its ventral outline weakly convex in M. sakaeratensis); slightly smaller size (HW 0.96–0.99 mm in M. crawleyi; HW 1.19–1.29 mm in M. sakaeratensis).
Keys including this Species
Distribution
Tak, Kanchanaburi and Nakhon Si Thammarat Provinces, Thailand; Sumatra, Indonesia.
Latitudinal Distribution Pattern
Latitudinal Range: 15.32472222° to 15.32472222°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia (type locality).
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. |
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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.
- crawleyi. Trapeziopelta crawleyi Donisthorpe, 1941k: 237.
- Replacement name for Trapeziopelta nitida Crawley, 1924: 384. [Junior secondary homonym of Ponera nitida Smith, F. 1861b: 45.]
- Combination in Myopias: Bolton, 1995b: 269.
- Status as species: Chapman & Capco, 1951: 75; Bolton, 1995b: 269; Probst, Guénard & Boudinot, 2015: 205 (in key); Jaitrong, Tasen & Guénard, 2018: 156 (redescription).
- Distribution: Indonesia (Sumatra), Thailand.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Jaitrong, Tasen & Guénard (2018) - Non-type workers (n = 7): TL 5.70–5.85, HL 1.06–1.16, HW 0.96–0.99, SL 0.86–0.92, ED 0.13–0.17, ML 0.89–0.92, PW 0.76–0.79, MSL 1.65–1.68, PL 0.56–0.59, PH 0.69–0.73, DPW 0.56–0.59, CI 86– 91, SI 90–93, OI 13–17, MI 79–85, LPI 117–129, DPI 94–103.
Type Material
Jaitrong, Tasen & Guénard (2018) - Holotype worker, INDONESIA, Sumatra, Fort de Kock, October 1922, 920M, E. Jacobson leg. (Oxford University Museum of Natural History, syntype image examined).
References
- Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 269, Combination in Myopias)
- Crawley, W. C. 1924a. Ants from Sumatra, with biological notes by Edward Jacobson. Ann. Mag. Nat. Hist. 9(13): 380-409 (page 384, [Junior secondary homonym of Ponera nitida Smith, F. 1861b: 45.])
- Donisthorpe, H. 1941m. Synonymical notes, etc., on Formicidae (Hym.). Entomol. Mon. Mag. 77: 237-240 (page 237, Replacement name for Trapeziopelta nitida)
- Jaitrong, W., Tasen, W., Guénard, B. 2018. The ant genus Myopias Roger, 1861 (Hymenoptera: Formicidae: Ponerinae) in Thailand, with descriptions of three new species. Zootaxa 4526:151–174 (DOI 10.11646/zootaxa.4526.2.3).
- Smith, F. 1861b. Catalogue of hymenopterous insects collected by Mr. A. R. Wallace in the islands of Ceram, Celebes, Ternate, and Gilolo. [part]. J. Proc. Linn. Soc. Lond. Zool. 6: 36-48 (page 45, primary homonym)
References based on Global Ant Biodiversity Informatics
- Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
- Crawley W.C. 1924. Ants from Sumatra, with biological notes by Edward Jacobson. Annals and Magazine of Natural History (9)13: 380-409
- Jaitrong W., W. Tasen, and B. Guénard. 2018. The ant genus Myopias Roger, 1861 (Hymenoptera: Formicidae: Ponerinae) in Thailand, with descriptions of three new species. Zootaxa 4526: 151–174.