Aquatica lateralis

Aquatica lateralis, known as "heike-botaru" in Japanese, is a species of firefly found in Russia, Japan and Korea. It was formerly placed in the genus Luciola. The larvae are aquatic and live in rice paddies.

Aquatica lateralis
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Family:
Lampyridae
Subfamily:
Luciolinae
Genus:
Aquatica
Species:
A. lateralis
Binomial name
Aquatica lateralis
(Motschulsky, 1860)
Synonyms

Luciola lateralis Motschulsky, 1860

The genome of Aquatica lateralis was sequenced in 2018.[1]

Taxonomy

Victor Motschulsky described this species as Luciola lateralis from Dauria, Siberia in 1860.[2] In 2010, Fu, Ballantyne and Lambkin transferred four Luciola species, including lateralis, to the new genus Aquatica.[3] The Japanese name of A. lateralis is "heike-botaru", which may derive from The Tale of Heike, a 14th-century Japanese novel, or the Heike clan, which lost the 12th-century Genpei War.[4] (Another, larger firefly species, Luciola cruciata, has the Japanese common name "genji-botaru", a possible reference to the Genji clan, the winners in the Genpei War).[4]

Description

The male is 6.5–9.5 mm (0.26–0.37 in) long and 2.3–3.3 mm (0.091–0.130 in) wide. The female is 7.5–10.5 mm (0.30–0.41 in) long and 2.5–3.5 mm (0.098–0.138 in) wide. The body is elongate oval.[5] The pronotum is reddish pink or yellowish, with a central brown band, and the elytra are dark brown.[3] The male has a brown and yellow venter, and that of the female is brown, yellow and reddish pink. The oblong aedeagal sheath, about 2.3 mm (0.091 in) in length, and the male genitalia, 1.5–1.7 mm (0.059–0.067 in) long, are asymmetric.[5] The larva is soft, having gills and defensive organs.[6]

Distribution and habitat

A. lateralis is found in eastern Siberia, the Kuril Islands, Japan (including all four main islands) and Korea.[5] Its presence in China is unsubstantiated. Larvae live in rice paddies.[3] Adults are found from April to November; their numbers are greatest from June to August.[5]

Behaviour

The larvae are aquatic, crawling at the bottom of the water.[6] Third and fourth instar larvae overwinter in soils and stubble.[5] In Hokkaido and Korea, individuals often mature in more than one year; on Honshu, Kyushu and Shikoku, individuals usually mature in less than one year.[7] The larvae and adults emit yellowish lights, and the dim glow of the eggs and pupae is green.[8] The male emits flashes while searching for the female, whose flashes attract the male to a leaf 5–10 centimetres (2.0–3.9 in) from it. The male then emits a twinkling flash. Flashing continues, and then they copulate. Green, yellow and red artificial flashes all attract the male. In Hokkaido, there is longer than one second between flashes. In other areas of Japan and in Korea, there is about half a second.[7]

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References
  1. Fallon, Timothy R; Lower, Sarah E; Chang, Ching-Ho; Bessho-Uehara, Manabu; Martin, Gavin J; Bewick, Adam J; Behringer, Megan; Debat, Humberto J; Wong, Isaac; Day, John C; Suvorov, Anton; Silva, Christian J; Stanger-Hall, Kathrin F; Hall, David W; Schmitz, Robert J; Nelson, David R; Lewis, Sara M; Shigenobu, Shuji; Bybee, Seth M; Larracuente, Amanda M; Oba, Yuichi; Weng, Jing-Ke (2018). "Firefly genomes illuminate parallel origins of bioluminescence in beetles". eLife. 7. doi:10.7554/eLife.36495. ISSN 2050-084X. PMC 6191289. PMID 30324905.
  2. Motschulsky, V. (1860). "Coléoptères de la Sibérie orientale et en particulier des rives de l'Amour". In Schrenck, Leopold von (ed.). Reisen und Forschungen im Amur-Lande in den Jahren 1854–1856 (in French). 2. p. 114. Archived from the original on 2018-02-13.
  3. Fu, Xinhua; Ballantyne, Lesley; Lambkin, Christine L. (2010). "Aquatica gen. nov. from mainland China with a description of Aquatica Wuhana sp. nov. (Coleoptera: Lampyridae: Luciolinae)". Zootaxa (2530): 1–18. doi:10.5281/zenodo.196535. Archived from the original on 2017-12-22.
  4. Corkill, Edan (13 June 2008). "Fireflies set the nights alight". The Japan Times. Archived from the original on 28 December 2017. Retrieved 26 December 2017.
  5. Jeng, M. L.; Lai, J.; Yang, P. S. (2003). "Lampyridae: A synopsis of aquatic fireflies with description of a new species" (PDF). In Jäch, M. A.; Ji, L. (eds.). Water Beetles of China. 3. pp. 539–562. Archived (PDF) from the original on 2017-12-22.
  6. Fu, Xinhua; Ballantyne, Lesley; Lambkin, Christine L. (2012). "The external larval morphology of aquatic and terrestrial Luciolinae fireflies (Coleoptera: Lampyridae)". Zootaxa (3405): 1–34. doi:10.5281/zenodo.211302. Archived from the original on 2017-12-22.
  7. Ohba, Nobuyoshi (2004). "Flash Communication Systems of Japanese Fireflies". Integrative and Comparative Biology. 44 (3): 225–233. doi:10.1093/icb/44.3.225.
  8. Oba, Yuichi; Furuhashi, Mana; Bessho, Manabu; Sagawa, Shingo; Ikeya, Haruyoshi; Inouye, Satoshi (2013). "Bioluminescence of a firefly pupa: involvement of a luciferase isotype in the dim glow of pupae and eggs in the Japanese firefly, Luciola lateralis". Photochemical & Photobiological Sciences. 12 (5): 854–863. doi:10.1039/C3PP25363E.
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