This species is a temporary social parasite of Lasius species belonging to the subgenus Chthonolasius. In the Kanto district, Japan, it frequently tends aphids on trees (Kubota, 1988). Nuptial flights occur during June and July.
L. nipponensis was first recorded from Japan by Matsumura (1898). Thereafter, Japanese myrmecologists have consistently used the name Lasius fuliginosus for this relatively common ant. However, recent morphological and biochemical comparisons between European and East Asian populations imply that they represent separate species (Espadaler et al., 2001; Japanese Ant Image Database).
|At a Glance||• Temporary parasite|
An eastern Asian species most readily distinguished by the aberrant pilosity and pubescence of the queen caste.
Radchenko (2005) - Workers: petiolar scale (seen in profile) thin, distinctly narrowing to the top and with flattened dorsal crest, symmetrical; seen in front or from behind, it is the widest at the level of the spiracles, clearly tapering to the top, its dorsal crest narrowly rounded, without notch; head in full face view distinctly narrowing anteriorly and with shallowly emarginate occipital margin; scape, mid and hind tibiae not flattened, elliptical in cross-section; ratio of min/max diameters of the scape > 0.7; scape and legs with numerous subdecumbent hairs; promesonotal dorsum and occipital margin with rather long standing hairs; body with sparse, short decumbent pubescence.
Queens: petiolar scale (seen in profile) thin, narrowing to the top; head in full face view distinctly narrowing anteriorly, with almost straight lateral margins in front of the eyes, and with hardly emarginate occipital margin; scape, mid and hind tibiae not flattened, elliptical in cross-section; ratio of min/max diameters of the scape > 0.7; legs and scape with dense decumbent pubescence and numerous subdecumbent hairs; head, alitrunk and gaster with very abundant, long, often curved standing hairs.
Keys including this Species
- Key to Lasius Dendrolasius queens of the East Palaearctic
- Key to Lasius Dendrolasius workers of the East Palaearctic
Radchenko (2005) - Southern part of Russian Far East (Primorsky Region), Korean Peninsula, Japan (Hokkaido, Honshu, Shikoku), Taiwan.
Latitudinal Distribution Pattern
Latitudinal Range: 38.283333° to 31.81666°.
- Source: AntMaps
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
|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.|
|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.|
Association with Other Organisms
- Explore: Show all Associate data or Search these data. See also a list of all data tables or learn how data is managed.
- This species is a host for the ichneumonid wasp Eurypterna cremieri (a parasitoid) (Quevillon, 2018) (encounter mode primary; direct transmission; transmission outside nest).
- Check details at Worldwide Ant Nuptial Flights Data, AntNupTracker and AntKeeping.
- Explore: Show all Flight Month data or Search these data. See also a list of all data tables or learn how data is managed.
Images from AntWeb
|Paralectotype of Lasius nipponensis. Worker. Specimen code casent0911057. Photographer Z. Lieberman, uploaded by California Academy of Sciences.||Owned by MHNG, Geneva, Switzerland.|
Images from AntWeb
|Paratype of LasiusÂ crispus. Male (alate). Specimen code casent0911181. Photographer Z. Lieberman, uploaded by California Academy of Sciences.||Owned by MHNG, Geneva, Switzerland.|
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- nipponensis. Lasius fuliginosus var. nipponensis Forel, 1912l: 339 (w.q.) JAPAN. Junior synonym of fuliginosus: Wilson, 1955a: 138; Yamauchi, 1979: 171. Revived from synonymy and raised to species: Espadaler, Akino & Terayama, 2002: 340. Senior synonym of crispus Wilson: Radchenko, 2005a: 84.
- crispus. Lasius (Dendrolasius) crispus Wilson, 1955a: 144 (w.q.m.) JAPAN. [Unresolved junior primary homonym of crispus Théobald, above.] Junior synonym of capitatus: Kupyanskaya, 1989: 785; of nipponensis: Radchenko, 2005a: 84. See also: Yamauchi, 1979: 174.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Radchenko (2005) - HL1 = 1.09-1.25, HL2 = 1.15-1.30, HW1 = 1.09-1.26, HW2= 0.67-0.76, SL = 1.01-1.18, OL = 0.23-0.25, AL = 1.26-1.51; CI = 1.00-1.01, CLI = 1.04-1.05, CWI = 1.63-1.67, SI1 = 0.92-0.94, SI2 = 0.92-0.94, OI = 0.20-0.21.
Wilson (1955) – description of synonym Lasius crispus: Two workers from Ueda, Honshu, and a small series from central Korea are tentatively and with great reservation placed in this species and used for the following diagnosis.
(1) The standing hairs of the second and third gastric tergites, anterior to the extreme posterior strips, as long as those of the pronotum or longer. In the Ueda series but not in the Korean series, femora with numerous outstanding decumbent to suberect hairs. Cephalic and gastric pilosity denser than in fuliginosus.
(2) Petiolar crest viewed from the side thinner and sharper than in fuliginosus, the anterior and posterior faces less convex (Pl. 2, Fig. 8).
PW of Ueda workers 0.64 and 0.72 mm., of Korean series 0.77-0.87 mm.
Wilson (1955) – description of synonym Lasius crispus: 1) Body and appendage hairs much finer than in fuliginosus, many curved at the tip or even sinuate. On the appendages, where the pilosity is predominantly decumbent to subdecumbent, the hairs are frequently wicket-shaped in addition, recurving to touch the cuticular surface with their tips.
(2) Body pubescence very sparse or absent, so that the entire cuticular surface is moderately to strongly shining. The appendages are densely covered with appressed hair, the legs somewhat more so than the scapes.
(3) Viewed from the side the crest of the petiole thin and acute; the entire posterior margin of the petiole feebly concave in each of the three specimens examined.
(4) Viewed in full face the genal margins nearly straight, curving inward only near the mandibular insertions. As a result the occipital region appears proportionately wider, and the entire head more sagittate, than in fuliginosus.
(5) The median clypeal keel, which is feebly developed in fuliginosus, is completely lacking in crispus.
HW of paratopotype 1.58 mm., of Ueda queen 1.55 mm., of Kochi City queen 1.52 mm.
Wilson (1955) – description of synonym Lasius crispus: (1) In side view the anterior and posterior faces of the petiole taper equally to form a narrow, sharp crest. Otherwise very similar to fuliginosus.
(2) Terminal segments of maxillary palp highly variable in length as in other Dendrolasius, but showing no sign of ankylosis.
(3) Pygostyle and subgenital plate as in fuliginosus.
HW of paratopotype male 1.08 mm., of Ueda series 1.04-1.26 mm. Genitalia identical to that of fuliginosus.
- Espadaler, X.; Akino, T.; Terayama, M. 2002 . Taxonomic status of the ant Lasius nipponensis Forel, 1912 (Hymenoptera, Formicidae). Nouv. Rev. Entomol. 18: 335-341. (page 340, Revived from synonymy, raised to species and senior synonym of orientalis)
- Forel, A. 1912m. Quelques fourmis de Tokio. Ann. Soc. Entomol. Belg. 56: 339-342 (page 339, worker, queen described)
- Imai, H.T., Kihara, A., Kondoh, M., Kubota, M., Kuribayashi, S., Ogata, K., Onoyama, K., Taylor, R.W., Terayama, M., Yoshimura, M., Ugawa, Y. 2003. Ants of Japan. 224 pp, Gakken, Japan.
- Liu, C., Fischer, G., Hita Garcia, F., Yamane, S., Liu, Q., Peng, Y.Q., Economo, E.P., Guénard, B., Pierce, N.E. 2020. Ants of the Hengduan Mountains: a new altitudinal survey and updated checklist for Yunnan Province highlight an understudied insect biodiversity hotspot. ZooKeys 978, 1–171 (doi:10.3897/zookeys.978.55767).
- Radchenko, A. 2005a. A review of the ants of the genus Lasius Fabricius, 1804, subgenus Dendrolasius Ruzsky, 1912 (Hymenoptera: Formicidae) from East Palearctic. Annales Zoologici (Warszawa) 55(1): 83-94 (page 84, status revived, raised to species)
- Santschi, F. 1941. Quelques fourmis japonaises inédites. Mitt. Schweiz. Entomol. Ges. 18: 273-279 (page 273, raised to species)
- Wilson, E. O. 1955a. A monographic revision of the ant genus Lasius. Bulletin of the Museum of Comparative Zoology 113: 1-201 (page 138, Junior synonym of fuliginosus)
- Yamauchi, K. 1979 . Taxonomical and ecological studies on the ant genus Lasius in Japan (Hymenoptera: Formicidae). I. Taxonomy. Sci. Rep. Fac. Educ. Gifu Univ. (Nat. Sci.) 6: 147-181 (page 171, Junior synonym of fuliginosus)
References based on Global Ant Biodiversity Informatics
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