Technomyrmex lisae

Technomyrmex lisae
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Dolichoderinae
Genus:	Technomyrmex
Species:	T. lisae
Binomial name
	Technomyrmex lisae; Forel, 1913 Specimen Labels

A few of the known collections are noted as being made within wet forest habitat, with the ants obtained from sweeping and litter samples. Heterick & Kitching (2022) collected this species in the canopy of a lowland dipterocarp forest in Brunei. In Thailand, Jaitrong & Yamane (2014) found this species inhabits lowland evergreen forests and nests in dead twigs on trees, dead stems, under bark of living trees etc.

Identification

Bolton (2007) - A member of the Technomyrmex bicolor group. Probably the most extremely polymorphic species in the genus. As worker size increases then CI also increases, but SI, OI and EPI all decrease, the SI markedly so. The change of head shape with increasing size is the most striking feature. In the smallest workers HL is greater than HW (i.e. CI < 100) but in the largest HW is greater than HL. As size increases the sides of the head become more strongly convex and the posterior margin more extensively and deeply cleft, so that the head shape of the smallest workers is markedly different from the strongly cordate heads of the largest workers.

Technomyrmex horrens appears to be a related polymorphic species, but horrens is smaller, lacks setae on gastral tergite 3 and has only a shallow median concavity in the anterior clypeal margin.

Keys including this Species

Distribution

Peninsular Malaysia; Sabah and Sarawak, Bornea; Sumatra.

Latitudinal Distribution Pattern

Latitudinal Range: 4.95° to -5.066666603°.


North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

Source: AntMaps

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Brunei Darussalam, Indonesia, Malaysia (type locality).
Oriental Region: Thailand.

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Jaitrong & Yamane (2024), Fig. 22. Distribution of Technomyrmex horni, T. lisae, T. schimmeri, and T. sundaicus in Thailand.

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.

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.

Biology

Castes

Jaitrong & Yamane (2024), Fig. 25. Technomyrmex lisae (worker). A, body in profile; B, head in full-face view; C, body in dorsal view. Photos by Yudthana Samung.
Jaitrong & Yamane (2024), Fig. 26. Technomyrmex lisae (queen and alate male). A–C, queen; D–F, alate male; A, D, head in full-face view; B, E, body in profile; C, F, body in dorsal view. Photos by Yudthana Samung.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

lisae. Technomyrmex lisae Forel, 1913k: 94, fig. B (w.q.) WEST MALAYSIA. See also: Bolton, 2007a: 89.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Bolton (2007) - TL 4.0 - 6.0, HL 0.92 - 1.68, HW 0.85 - 1.78, SL 0.88 - 1.34, PW 0.47 - 0.82, WL 1.16 - 1.80 (25 measured). Indices: CI 89 - 108, SI 75 - 106, OI 17 - 22, EPI 47 - 61, DTI 142 - 170.

Dorsum of head behind clypeus entirely lacks setae. Anterior c1ypeal margin with a long U-shaped median cleft; inner margin of cleft meets the anterior clypeal margin in a sharp angle at each side. Posterior margin of head strongly concave in small workers; deeply cleft in large workers so that the head is cordate. Eyes relatively small (OI < 25) and located far in front of the midlength; in full-face view the outer margins of the eyes inset far from the outline of the sides of the head. Scapes without setae but with dense short pubescence that is slightly elevated. Dorsum of mesosoma and declivity of propodeum entirely lack setae. In profile the metathoracic spiracles well in front of the metanotal groove and the propodeal dorsum rounds into the declivity. Gastral tergites 1 - 2 without setae; gastral tergites 3 - 4 each with a transverse row of 6 - 8 stout stiff setae. Tibiae without setae but some elevated short pubescence may be present. Colour yellow to light brown or yellowish brown; usually the gaster, and frequently both the head and gaster, slightly darker than the mesosoma. Legs yellow to light brown, the tarsi about the same colour as the tibiae and femora.

Type Material

Bolton (2007) - Syntype workers, Malaysia: Malacca, Taiping, Maxwell's Hill (v. Buttel-Reepen) and Perak, Tiefland, Feb. 1912 (no collector's name but presumably v. Buttel-Reelpen); syntype queen, Indonesia: Sumatra, Bandar Baroe (v. Buttel·Reepen) (Musee d'Histoire Naturelle Genève) [examined].

References

Bolton, B. 2007. Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste. Contributions of the American Entomological Institute. 35(1):1-149.
Forel, A. 1913l. Wissenschaftliche Ergebnisse einer Forschungsreise nach Ostindien ausgeführt im Auftrage der Kgl. Preuss. Akademie der Wissenschaften zu Berlin von H. v. Buttel-Reepen. II. Ameisen aus Sumatra, Java, Malacca und Ceylon. Gesammelt von Her (page 94, fig. B worker, queen described)
Heterick, B.E., Kitching, R.L. 2022. The ants (Hymenoptera: Formicidae) of a one-hectare plot of lowland dipterocarp forest. Entomologist’s Monthly Magazine 158(4), 261–272 (doi:10.31184/m00138908.1584.4153).
Jaitrong, W., Yamane, S. 2024. A revision of the ants Technomyrmex Mayr, 1872 (Hymenoptera: Formicidae: Dolichoderinae) in Thailand and Laos. Natural History Bulletin of the Siam Society 66 (1): 29–118.
Khachonpisitsak, S., Yamane, S., Sriwichai, P., Jaitrong, W. 2020. An updated checklist of the ants of Thailand (Hymenoptera, Formicidae). ZooKeys 998, 1–182 (doi:10.3897/zookeys.998.54902).
Kreider, J.J., Chen, T.W., Hartke, T.R., Buchori, D., Hidayat, P., Nazarreta, R., Scheu, S., Drescher, J. 2021. Rainforest conversion to monocultures favors generalist ants with large colonies. Ecosphere 12 (doi:10.1002/ecs2.3717).
Yamane, S., Tanaka, H.O., Hasimoto, Y., Ohashi, M., Meleng, P., Itioka, T. 2021. A list of ants from Lambir Hills National Park and its vicinity, with their biological information: Part II. Subfamilies Leptanillinae, Proceratiinae, Amblyoponinae, Ponerinae, Dorylinae, Dolichoderinae, Ectatomminae and Formicinae. Contributions from the Biological Laboratory, Kyoto University 31, 87–157.

References based on Global Ant Biodiversity Informatics

Bolton B. 2007. Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste. Contributions of the American Entomological Institute 35(1): 1-150.
Bolton, B. "Taxonomy of the dolichoderine ant genus Technomyrmex Mayr (Hymenoptera: Formicidae) based on the worker caste." Contributions of the American Entomological Institute 35, no. 1 (2007): 1-149.
CSIRO Collection
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
Forel A. 1913k. Wissenschaftliche Ergebnisse einer Forschungsreise nach Ostindien ausgeführt im Auftrage der Kgl. Preuss. Akademie der Wissenschaften zu Berlin von H. v. Buttel-Reepen. II. Ameisen aus Sumatra, Java, Malacca und Ceylon. Gesammelt von Herrn Prof. Dr. v. Buttel-Reepen in den Jahren 1911-1912. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 36:1-148.
Mezger D., and M. Pfeiffer. 2011. Influence of the arrival of Anoplolepis gracilipes (Hymenoptera: Formicidae) on the composition of an ant community in a clearing in Gunung Mulu National Park, Sarawak, Malaysia. Asian Myrmecology 4: 89-98.
Pfeiffer M., D. Mezger, and J. Dyckmans. 2013. Trophic ecology of tropical leaf litter ants (Hymenoptera: Formicidae) - a stable isotope study in four types of Bornean rain forest. Myrmecological News 19: 31-41.
Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040733
Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040945
Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040982
Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0041092
Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
Shattuck S. O. 1994. Taxonomic catalog of the ant subfamilies Aneuretinae and Dolichoderinae (Hymenoptera: Formicidae). University of California Publications in Entomology 112: i-xix, 1-241.