Polyrhachis craddocki

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Polyrhachis craddocki
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Polyrhachis
Subgenus: Polyrhachis
Species group: lamellidens
Species: P. craddocki
Binomial name
Polyrhachis craddocki
Bingham, 1903

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Specimen Labels

Polyrhachis craddocki is so far known only from two localities separated by a distance of over 2600 km, with no material known from areas in between. All specimens from Brunei were collected during two successive visits to the KBFSC, apparently from a single colony trail on a tree trunk and surrounding vegetation just a few hundred metres from the base accommodation units. A thorough search of the surrounding areas to locate another P. craddocki colony was conducted on both occasions, with the help of the entomology staff of the Brunei Museum, but without success. (Kohuot, 2014)

Identification

A member of the lamellidens group of the subgenus Polyrhachis. In spite of the geographical separation, the known specimens of this taxon are very similar and, apart from the generally larger size of specimens from Brunei (HL 1.81 – 2.00 versus HL 1.72 – 1.84 in syntypes from Myanmar), they are closely comparable in all other aspects.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

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


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • craddocki. Polyrhachis craddocki Bingham, 1903: 403, fig. 138 (w.) MYANMAR. See also: Hung, 1970: 31.

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

Description

Worker

Kohout (2014) - Dimensions (syntypes cited first): TL c. 6.89 – 7.31, 7.36 – 8.16; HL 1.72 – 1.84, 1.81 – 2.00; HW 1.56 – 1.65, 1.65 – 1.78; CI 90 – 91, 88 – 92; SL 1.87 – 2.12, 2.12 – 2.31; SI 120 – 128, 126 – 131; PW 0.97 – 1.12, 1.18 – 1.34; PeH 1.76 – 2.09, 2.09 – 2.25; PeI 102 – 113, 109 – 115; MTL 2.28 – 2.53, 2.59 – 2.90 (3+15 measured).

Type Material

Kohout (2014) - Syntype workers. Type locality: MYANMAR (= Burma), Trans-Salween Shan States (Craddock), The Natural History Museum, Musee d'Histoire Naturelle Genève, Queensland Museum (examined).

References