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Strumigenys scylla
| Strumigenys scylla | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. scylla |
| Binomial name | |
| Strumigenys scylla (Bolton, 2000)
| |
The type material was collected from a rainforest, in a piece of rotten wood in the soil.
Identification
Bolton (2000) - A member of the Strumigenys leptothrix-group. Along with Strumigenys rudinodis, Strumigenys scolopax, Strumigenys megaera and Strumigenys medusa, scylla has a bispinose propodeum and a pair of acute propodeal lobes at the base of the declivity, the two being linked only by a pair of narrow carinae that run down the sides of the declivity. Of these five species scylla and medusa together have long fine hairs that project freely from the tibiae and numerous long fine acute hairs, some or all of which are curved anteriorly, projecting from the dorsolateral margins of the head from the level of the eyes to the apices of the occipital lobes. S. scylla and medusa are separated by the following characters.
S. scylla: Mandibles and scapes relatively shorter: MI 14, SI 81-84. Eye larger, 0.18-0.20 X HW and with 6-7 ommatidia in the longest row. Longest hairs on vertex strongly arched anteriorly. Propodeal lobes broadly triangular, less than half the length of the propodeal spines.
S. medusa: Mandibles and scapes relatively longer: MI 16-18, SI 87-94. Eye smaller, 0.14-0.15 X HW and with 4 ommatidia in the longest row. Longest hairs on vertex approximately vertical, not strongly arched anteriorly. Propodeal lobes narrowly triangular, more than half the length of the propodeal spines.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -7.199999809° to -7.199999809°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: New Guinea, Philippines.
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
Worker
   
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| . | Owned by Museum of Comparative Zoology. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- scylla. Pyramica scylla Bolton, 2000: 439 (w.q.) NEW GUINEA. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 127
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 2.9, HL 0.73, HW 0.50, CI 68, ML 0.10, MI 14, SL 0.42, SI 84, PW 0.34, AL 0.84. With head in full-face view the dorsolateral margin, from level of eye to occipital corner, with numerous (more than 1 0 on each side) long to very long fine projecting hairs that curve anteriorly and are acute apically. In profile the cephalic dorsum, from about the highest point of the vertex to the occipital margin, with abundant long fine hairs that are curved forward and are acute apically; dorsal head in front of this level without long hairs. Eye with 6 ommatidia in the longest row. Leading edge of scape with a row short decumbent hairs that are directed toward the apex of the scape; without freely projecting hairs of any form. Vertex predominantly reticulate-punctate but dorsum of occipital lobes and vertex immediately in front of occipital margin with scattered longitudinal rugulae. Dentition discussed in introduction to group. Pronotum marginate dorsolaterally, the dorsum longitudinally costulate-rugulose and the spaces between this sculpture weakly reticulate-punctate. Dorsal surfaces of alitrunk, waist and first gastral tergite with numerous long to very long fine soft hairs that are curved or flexuous and acute apically. Dorsal (outer) surfaces of middle and hind tibiae with freely projecting long fine suberect to subdecumbent hairs, the longest of which distinctly exceed the maximum width of the segment from which they arise. Similar long hairs also project from all other leg segments. Propodeum armed with a pair of long narrow straight spines, base of declivity with a pair of broadly triangular propodeal lobes that are acute apically; the declivity between these margined only by a fine carina. Spongiform appendages of waist segments in profile well developed. Lateral lobe of petiole small, not extending forward alongside of node. In dorsal view postpetiole disc margined by spongiform tissue on all sides, the disc with some fine longitudinal rugulae and superficial punctulation.
Paratypes. TL 2.9-3.0, HL 0.72-0.76, HW 0.51-0.53, CI 70-71, ML 0.10-0.11, MI 14, SL 0.42-0.43, SI 81-82, PW 0.36-0.37, AL 0.85-0.90 (2 measured). As holotype but eye may have 6 or 7 ommatidia in the longest row.
Type Material
Holotype worker, Papua New Guinea: Bulolo, 2000 ft, 26. xi.1967, rainforest, ANIC Ants vial 17.191 (B. B. Lowery) (Australian National Insect Collection).
Paratypes, 11 workers and 3 queens with same data as holotype (ANIC, The Natural History Museum, Museum of Comparative Zoology).
Type Material
- Holotype, worker, Bulolo, Morobe District, Papua New Guinea, Lowery,B.B., ANIC32-017698, Australian National Insect Collection.
- Paratype, 7 workers, 2 queens, Bulolo, Morobe District, Papua New Guinea, Lowery,B.B., ANIC32-001648, Australian National Insect Collection.
References
- Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria” 99:1-191.
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 430, 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
- CSIRO Collection
- Janda M., G. D. Alpert, M. L. Borowiec, E. P. Economo, P. Klimes, E. Sarnat, and S. O. Shattuck. 2011. Cheklist of ants described and recorded from New Guinea and associated islands. Available on http://www.newguineants.org/. Accessed on 24th Feb. 2011.