Pseudolasius trimorphus

AntWiki: The Ants --- Online
Pseudolasius trimorphus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Lasiini
Genus: Pseudolasius
Species: P. trimorphus
Binomial name
Pseudolasius trimorphus
Karavaiev, 1929

Pseudolasius trimorphus casent0912326 p 1 high.jpg

Pseudolasius trimorphus casent0912326 d 1 high.jpg

Specimen Labels



Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (type locality), Singapore.

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.

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.



Images from AntWeb

Pseudolasius trimorphus casent0912327 p 1 high.jpgPseudolasius trimorphus casent0912327 d 1 high.jpgPseudolasius trimorphus casent0912327 h 1 high.jpgPseudolasius trimorphus casent0912327 l 1 high.jpg
Syntype of Pseudolasius trimorphusWorker. Specimen code casent0912327. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by NHMB, Basel, Switzerland.


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

  • trimorphus. Pseudolasius trimorphus Karavaiev, 1929a: 52, fig. 7 (s.w.q.m.) INDONESIA (Java).

The following notes on V.A. Karavaiev type specimens have been provided by Martynov & Radchenko (2016) based on material held in the Institute of Zoology, Ukrainian Academy of Science:

Type locality(-ies): “Tjibodas, Java (Nr. 3861, 3862, 3863), w min., med., und maj., zahlreiche flügellose und 1 geflüg. q.—Buitenzorg, Java (Nr. 2367), ww min. und med., zahlreiche mm und 1 flügellose q.—? Sundstrasse bei Bantan (Java), auf dem Deck des Dampfers (Nr. 2396), 2 q, etwas kleiner”.

Original Karawajew label(-s): “Pseudolasius trimorphus Kar. / Buitenzorg. Karavaev. 2367”.

Material: SYNTYPES, 6 w, 2 q (newly mounted, IN 314/6/2), 113 w, 218 q and m (in alcohol, IN 314/ BAMS1/Karaw60).



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
  • Martynov A. V., and A. G. Radchenko. 2016. Karawajew’s ant type specimens (Hymenoptera, Formicidae) in the National Museum of Natural History of the National Academy of Sciences of Ukraine. Zootaxa 4097 (2): 244–254.