Ponera takaminei

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Ponera takaminei
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Ponera
Species: P. takaminei
Binomial name
Ponera takaminei
Terayama, 1996

Ponera takaminei F8-9.jpg

Nothing is known about the biology of Ponera takaminei.

Identification

Terayama (1996) - Easily separated from the other congeners in having the characteristic shape of petiolar node.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Palaearctic Region: Japan (type locality), Republic of Korea.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

The general biology of species in the genus was summarized by Taylor (1967): Ponera are small ants that nest in rotting logs in forested areas or under stones in nonforested situations. In the tropical areas specimens are rarely encountered away from rain forest. In temperate areas, however, species may occur in relatively lightly forested areas. This appears to be the case with Ponera japonica, Ponera pennsylvanica and especially with Ponera coarctata. The Australian Ponera leae is essentially limited to rain forest in the northern parts of its range, but further south it may be found in dry, lightly forested areas.

Foraging is probably cryptobiotic, though some New Guinea species have been taken straying on the ground surface. Little information is available concerning feeding. However, most species are probably insectivorous. I have conducted feeding experiments with some of the New Guinea and Samoan species, including Ponera xenagos, Ponera elegantula, Ponera tenuis, Ponera incerta and Ponera woodwardi. These were unsuccessful with the larger species, except elegantula, which accepted moderately large (8-12 mm) campodeid and japygid Diplura. Tenuis and incerta accepted smaller (4-6 mm) campodeids, isotomid and sminthurid Collembola, and small newly hatched spiders (2 mm long). Negative feeding response was obtained with eggs and larvae of various ants, small crushed insects of various orders, and small myriapods. Stray workers were never observed carrying prey, and distinct middens of insect or other remains were not located near nests.

Colonies usually contain about 30 workers. Larvae and pupae are not segregated in most cases, but occasionally aggregations of pupae were observed. These may have included the total brood of the colonies involved. Larvae are attached to the floor or walls of the nest galleries by the glutinous abdominal tubercles described above, and the ants move them high up on the walls or ceilings of artificial nests, if they are flooded. Details of nuptial behavior of pennsylvanica were given by Wheeler (1900), and Haskins & Enzmann (1938). The flights appear to be of a pattern typical for ants, with the alates meeting in the air and mating there or on the ground. Colony foundation is non-claustral and independent in pennsylvanica (Kannowski 1959); judging from my observations this is typical for the genus.

Castes

Nomenclature

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

  • takaminei. Ponera takaminei Terayama, 1996: 11, figs. 7-9 (w.) JAPAN.

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

Description

Terayama 2009. Figures 39-64.

Worker

Holotype. Worker. HL 0.76mm; HW 0.65mm; SL 0.51 mm; CI 85; SI 79; WL 1.03 mm; PW 0.49 mm; PH 0.50 mm; PNL 0.30 mm; DPW 0.43 mm; PNI 88; TL 3.0 mm.

Head 1.17 x as long as wide, with gently convex sides and concave posterior margin in frontal view. Mandibles with 3 acute teeth occupying apical 1/3 of masticatory margin; remainder with very minute indistinct denticles. Clypeus with a distinct blunt median tooth. Eyes small, ca. 0.04 mm in diameter, each consisting of 4 or 5 indistinct facets. Antennae with 12 segments; scape not reaching the posterior margin of head; club not differentiated; terminal segment 1.6x as long as wide.

General form of alitrunk and petiole as in Fig; promesonotal suture distinctly incised; dorsal mesonotal-propodeal suture relatively weakly incised; posterolateral comers of propodeum dully angulate. Petiolar node thick and broad, with almost straight dorsal margin; dorsal length larger than that of basal length in profile; in dorsal view, disc 0.57 x as long as wide, with dully angulate posterolateral margins and concave posterior margin. Subpetiolar process with acute posterolateral teeth; fenestra oval.

Head and antennal scapes coarsely microreticulate; mandibles smooth and shining. Alitrunk, petiole and gaster coarsely microreticulate and punctate, excepting declivitous face of propodeum shining with scattered shallow punctures. Pubescence moderately abundant; erect or suberect hairs present on head, dorsa of alitrunk and petiolar node, and entire gaster.

Body reddish brown; clypeus yellowish; mandibles, antennae, legs and tip of gaster yellowish brown.

Type Material

Holotype. Worker, Miyako-jima, Okinawa Pref., 24.VII.1978, H. Takamine leg. Paratypes. 1 worker, same data as holotype; 4 workers, same locality, 10.11.1985, Y. Hashimoto leg.

Leong et al. (2019): Type material examined: JAPAN. Paratype. 1 worker, Miyako-jima, Okinawa Pref., 10 XI 1985, Y Hashimoto leg (Maromu Terayama Collection: LCM_MT-Ponera-04).

Etymology

This species is named after the collector, MR. H. Takamine.

References