Aenictus gonioccipus
Aenictus gonioccipus | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Dorylinae |
Genus: | Aenictus |
Species: | A. gonioccipus |
Binomial name | |
Aenictus gonioccipus Jaitrong & Yamane, 2013 |
So far this species has been known only from the type locality located in the lowland (100m alt.).
Identification
A member of the ceylonicus species group. Jaitrong and Yamane (2013) - Aenictus gonioccipus is a distinct species and can be separated from the other members of the group by having the posterolateral corner of head in profile angulated and nearly right-angled (corner is rounded in the other species).
Keys including this Species
Distribution
Sulawesi
Latitudinal Distribution Pattern
Latitudinal Range: 0.583333333° to 0.583333333°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia (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
Known only from the worker caste.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- gonioccipus. Aenictus gonioccipus Jaitrong & Yamane, 2013: 190, fig. 9A-C (w.) INDONESIA (Sulawesi).
- Type-material: holotype worker, 4 paratype workers.
- Type-locality: holotype Indonesia: Sulawesi, Minasha Prov., Dumoga Bone N.P., E side, vic. Duluduo, 0°35’N, 124°54’E, 4-9.xii.2000, no. 598 (A. Schulz); paratypes with same data.
- Type-depository: NHMW.
- Distribution: Indonesia (Sulawesi).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
(holotype and paratypes, n = 5). TL 3.05–3.25 mm; HL 0.63–0.65 mm; HW 0.60–0.63 mm; SL 0.50–0.53 mm; ML 1.05–1.08 mm; PL 0.25–0.28 mm; CI 96; SI 83–88.
Head in full-face view slightly longer than broad, sides weakly convex and posterior margin almost straight; occipital margin bearing a distinct carina; with head in profile occipital corner angulate, nearly right-angled. Antennal scape reaching 2/3 of head length. Frontal carina relatively short, not reaching the level of posterior margin of torulus. Parafrontal ridge incomplete. Anterior clypeal margin concave, lacking denticles and concealed by curved anterior extension of frontal carina. Masticatory margin of mandible with large acute apical tooth followed by a medium-sized subapical tooth, 4–5 denticles, and a medium-sized basal tooth; basal margin weakly concave. Maximum width of gap between anterior clypeal margin and mandibles about 2.3 times as broad as maximum width of mandible. Promesonotum strongly convex dorsally and sloping gradually to metanotal groove that is indistinct; mesopleuron not clearly demarcated from metapleuron. Propodeum in profile with weakly convex dorsal outline; propodeal junction developed into a high, thin transverse ridge, which in profile appears a large, acute tooth overhanging propodeal declivity; the declivity shallowly concave, and encircled with a rim; metapleural gland bulla relatively small, its maximum diameter about 2.1–2.5 times as long as distance between propodeal spiracle and metapleural gland bulla. Petiole subsessile, almost as long as high but its node short, with dorsal outline elevated posteriorly; subpetiolar process generally very low, subrectangular with its anteroventral and posteroventral corners angulate, and margin between the corners almost straight. Postpetiole slightly longer than petiole, with its dorsal outline convex.
Head and gaster smooth and shiny; basal half of antennal scape densely micro-reticulate but apical half superficially microreticulate and shiny; mandible finely striate. Promesonotum smooth and shiny except for anteriormost portion reticulate and posteriormost portion punctate; mesopleuron, metapleuron, and propodeum entirely reticulate; in addition, mesopleuron with 4–5 longitudinal rugae. Petiole entirely reticulate; postpetiole reticulate (the reticulation weaker than in petiole) except its dorsum smooth and shiny. Basal 1/3 and apical 1/3 of femora sculptured, median swollen area smooth and shiny; tibiae microreticulate, partly smooth and shiny.
Head and mesosoma dorsally with relatively sparse standing hairs mixed with dense decumbent hairs; longest pronotal hair 0.28–0.30 mm long. Head and gaster reddish brown; antenna, mesosoma, petiole and postpetiole dark reddish brown; legs reddish brown to dark reddish brown.
Type Material
Holotype. INDONESIA: Worker from Sulawesi, Minasha Prov., Dumoga Bone N.P., E-Side, vic. Duluduo, 0˚35'N 124˚54'E, 100 m alt., 4-9. XII.2000, leg. A. Schulz, 598 (MHMW). Paratypes. Four workers, same data as holotype (MHMW).
Etymology
The specific name refers to the angulated occipital corner seen in profile.
References
- Dhadwal, T., Bharti, H. 2023. Aenictus dirangensis sp. nov. (Hymenoptera: Formicidae), a new species of Aenictus ceylonicus group from India. Journal of the Entomological Research Society 25(2): 387-403 (doi:10.51963/jers.v25i2.2367).
- Jaitrong, W. & Yamane, S. 2013. The Aenictus ceylonicus species group (Hymenoptera, Formicidae, Aenictinae) from Southeast Asia. Journal of Hymenoptera Research 31:165-233.
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 S. Yamane. 2013. The Aenictus ceylonicus species group (Hymenoptera, Formicidae, Aenictinae) from Southeast Asia. Journal of Hymenoptera Research 31: 165-233.