Temnothorax kinomurai

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Temnothorax kinomurai
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Temnothorax
Species: T. kinomurai
Binomial name
Temnothorax kinomurai
(Terayama & Onoyama, 1999)

Four colonies of T. kinomurai were collected from nests of Temnothorax makora, and all consisted entirely of ergatoid females (Kinomura, pers. comm.). Therefore, T. kinomurai might be a social parasite on other Temnothorax species. Further, no worker caste may not be produced in this species. (Terayama and Onoyama 1999)


At a Glance • Ergatoid queen  

 

Identification

Terayama and Onoyama (1999) - Total length of ergatoid female around 2.5 mm. Head to postpetiole mostly yellow, gaster brown. Scapes short, not reaching posterior margin of head in full-face view. Three ocelli distinct. Dorsal outline of pronotum and mesoscutum weakly convex. Tegulae absent. Metanotum distinct. Propodeal spines acute, with relatively broad bases, about twice as long as their basal width and somewhat downcurved. Petiole short and high, node reverse U-shaped. Postpetiole high, with strongly convex dorsal margin in profile. Gaster with angulate anterolateral corners in dorsal view.

The ergatoid females of T. kinomurai may resemble those of Temnothorax bikara (if present), as short scapes, shapes of propodeal spines, petiole (especially the thick peduncle) and postpetiole suggest, but may be distinguished by the yellow body coloration in contrast to the black to blackish brown body coloration of T. bikara.

Keys including this Species

Distribution

Honshu (Gifu Pref.).

Distribution based on Regional Taxon Lists

Palaearctic Region: Japan (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.

  • kinomurai. Leptothorax kinomurai Terayama & Onoyama, 1999: 86, figs. 23-26 (q. and ergatoid q.) JAPAN. Combination in Temnothorax: Bolton, 2003: 271.

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

Description

Queen

Holotype. Ergatoid. HL 0.71 mm; HW 0.56 mm; CI 79; SL 0.49 mm; SI 88; WL 0.87 mm; PW 0.44 mm; PtW 0.20 mm; PtH 0.26 mm; TL 2.6 mm.

Head 1.3 times as long as wide, with almost straight, very slightly concave posterior margin in full-face view; sides of head behind eyes almost parallel, very slightly convergent posteriorly. Mandibles weakly longitudinally rugulose, apical 1/3 nearly smooth. Anterior margin of median clypeal lobe moderately convex. Antennae with 12 segments; scapes short, not reaching posterior margin of head in full-face view. Eyes relatively large, 0.19 mm in maximum diameter, with about 18 facets in the longest row. Three ocelli distinct, forming a right triangle.

Pronotum short, with weakly convex dorsal margin in profile. Mesoscutal dorsum evenly convex in profile. Mesepisternum with a deep oblique furrow. Mesoscutellum moderately developed and metanotum very short, but tegulae absent. Propodeal spines acute, with relatively broad bases, about twice as long as their basal width and somewhat downcurved.

Petiole short and high, peduncle thick, not distinctly converging anteriorly in profile; node reverse U-shaped; anterodorsal and posterodorsal corners each forming a dull angle; dorsal margin of node relatively short and straight in profile (Fig. 25). Small subpetiolar process present. Postpetiole higher than long, with relatively strongly convex dorsal margin in profile; node in dorsal view 1.8 times as wide as long, with convex sides and convex anterior margin (Fig. 26). Gaster with angulate anterolateral corners in dorsal view.

Head dorsum longitudinally rugulose with sparse cross-meshes. Pronotum weakly rugulose with dense punctulation, mesoscutum longitudinally rugulose and densely punctulate, mesoscutellum superficially rugulose, mesepisternum, metapleula and propodeum reticulatepunctulate. Petiole and postpetiole weakly but densely punctulate. Gaster smooth and shining.

Head dorsum moderately with relatively long erect hairs. Long erect hairs present on the pronotum (3 pairs), mesoscutum (2 pairs), mesoscutellum (2 pairs) , metanotum (1 pair), propodeum (1 pair), petiole (3 pairs), and postpetiole (6 pairs); the longest hair on mesosoma 0.15 mm; propodeal spines each with 1 subdecumbent hairs. Gaster with moderately abundant suberect to subdecumbent hairs.

Head, mesosoma , petiole, postpetiole, and legs yellow; gaster brown.

Type Material

Holotype. Ergatoid female, Gifu City, Gifu Pref., 18.I.1992, K. Kinomura leg. Paratypes. 1 alate female, 4 ergatoid females, Nagara, Gifu, 14.VI.1993, K. Kinomura leg.

References