Coelostoma stultum

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Coelostoma stultum
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Suborder:
Polyphaga
Superfamily:
Hydrophiloidea
Family:
Hydrophilidae
Genus:
Coelostoma
Species:
C. stultum
Binomial name
Coelostoma stultum
(Walker, 1858)
Synonyms
  • Hydrobius stultusWalker, 1858
  • Coelostoma sulcataPu & Zhe-Long, 1963
  • Cyclonotum simplexSharp, 1874

Coelostoma (Holocoelostoma) stultum, is a species of water scavenger beetle widely distributed in Palearctic and Oriental realms from West Pacific towards Indian Ocean, such as China, Taiwan, Andaman Islands, Myanmar, India, Indonesia, Japan, Korea, Malaysia, Mascarene Islands, Nicobar Islands, Oman, Philippines, Saudi Arabia, South Korea, Sri Lanka, Thailand, United Arab Emirates, Oman, and Vietnam. [1] [2] [3] [4]

Contents

Description

Body length is about 4.2 to 5.8 mm. Body oval. Labrum blackish with yellow edges. Front margin of the labrum is emarginate. Elytral surface densely punctate. Prosternum moderately convex medially. Fifth abdominal ventrite is feebly emarginate posteromesally, not carinate. It bears a row of stout setae apically. Prosternum is not dentate. Head, pronotum and elytra consists with similar punctation. Median lobe of the aedeagus of male is almost parallel with broadly rounded apex. Aedeagus is shorter than parameres. Parameres are not sharply pointed whereas mesofemora without pubescence, and glabrous. Pronotum coarsely punctate and sparsely covered by short setae. [5] [6]

Biology

The species has found commonly near the shore of paddy fields, ponds and rivers in Japan. Adult beetle has a breeding season once a year in early summer. Females build one egg cocoon enfolds several eggs after a single mating. It produces silk from the genitalia and then spins the lower part of the egg cocoon from it. Later, the female lays eggs and spins the lid of the egg cocoon to cover the eggs. Meanwhile, it has observed that female coats the lid with her feces for the protection against predators. During night time, the marsh slug, Deroceras laeve is known to prey on these eggs cocoons. [7]

Related Research Articles

<span class="mw-page-title-main">Hydrophilidae</span> Family of beetles

Hydrophilidae, also known colloquially as water scavenger beetles, is a family of beetles. Aquatic hydrophilids are notable for their long maxillary palps, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae have recently been removed and elevated to family rank; Epimetopidae, Georissidae, Helophoridae, Hydrochidae, and Spercheidae. While the majority of hydrophilids are aquatic, around a third of described species are terrestrial, mostly belonging to the subfamily Sphaeridiinae.

<span class="mw-page-title-main">Cebrionini</span> Tribe of beetles

Cebrionini is a tribe of click beetles from the family Elateridae; formerly ranked as a subfamily or family, they are now considered a tribe within the subfamily Elaterinae.

<i>Coelostoma</i> Genus of beetles

Coelostoma is a genus of beetles belonging to the family Hydrophilidae. The genus was first described by Brullé in 1835. The genus has cosmopolitan distribution, with 111 described species, representing one of the most diverse genera of Hydrophilidae.

<i>Acidocerus</i> Genus of beetles

Acidocerus aphodioides is a species of water scavenger beetle in the family Hydrophilidae. It is the only species in the genus Acidocerus. It is known only from Mozambique.

Dinonigidius bartolozzii, is a species of stag beetle endemic to Sri Lanka.

Hydroscapha monticola, is a species of skiff beetle native to India and Sri Lanka.

Cercyon (Clinocercyon) lineolatus, is a species of water scavenger beetle found in several Oriental and Oceanian countries.

Cercyon (Cercyon) nigriceps, is a species of water scavenger beetle with cosmopolitan distribution from Palaearctic, Nearctic, Afrotropical, Oriental and Neotropical regional countries.

<i>Crephelochares abnormalis</i> Species of beetle

Crephelochares abnormalis, is a species of water scavenger beetle found in Cambodia, Sri Lanka, Taiwan, Thailand, Vietnam, Ryukyu Islands and Indonesia: Borneo, Java, Sulawesi, Sumatra.

<i>Coelostoma vitalisi</i> Species of beetle

Coelostoma (Coelostoma) vitalisi, is a species of water scavenger beetle found in China, Taiwan, Japan, India, Indonesia, Japan, Malaysia, Nepal, Singapore, Sri Lanka, Cambodia, Thailand and Vietnam.

<i>Enochrus esuriens</i> Species of beetle

Enochrus (Methydrus) esuriens, is a species of water scavenger beetle found in Indochina, Korea, China, Japan, Bhutan, Iran, Iraq, Nepal, India, Pakistan, Philippines, Sri Lanka, Vietnam, Sunda Island, Saudi Arabia and Australia.

Sternolophus rufipes is a species of water scavenger beetle found in India, Sri Lanka, China, South Korea and the Philippines.

Hybosorus orientalis, is a species of scavenger scarab beetle found in Nepal, Pakistan, India, Sri Lanka, Afghanistan, Myanmar, Sumatra, and Java.

Phaeochrous is a genus of beetles belonging to the family Hybosoridae. The species are widely distributed over tropical Africa, Madagascar, Aldabra, Yemen, South Asia, South-East Asia, New Guinea and Oceanian islands, as well as North and West Australia.

Bolboceras insulare, is a species of dor beetle found in India, and Sri Lanka.

Ilamelmis starmuhlneri, is a species of riffle beetle found in Sri Lanka.

Melanotus punctosus, is a species of click beetle found in India, Sri Lanka, Pakistan, and Hawaii.

Acalyptomerus asiaticus, is a species of fringe-winged beetle found in India, Sri Lanka, Malaysia and Thailand. It is also introduced to Jamaica.

Clambus ceylonicus, is a species of fringe-winged beetle endemic to Sri Lanka.

Phoberus cyrtus is a species of hide beetle in the subfamily Troginae discovered by Erwin Haaf in 1953.

References

  1. ↑ Sheth, Sayali D.; Ghate, Hemant V.; Fikáček, Martin (2020-07-24). "Review of Coelostoma of the Indian subcontinent (Coleoptera: Hydrophilidae) Part 1: Coelostoma s. str. and Holocoelostoma". European Journal of Taxonomy (690). doi: 10.5852/ejt.2020.690 . S2CID   225461174 . Retrieved 2021-07-30.
  2. ↑ "New record of Coelostoma stultum (Coleoptera, Hydrophilidae) from the Daitô Islands, far off Southwest Japan". Diversification and systematics of Hydrophilidae. Retrieved 2021-07-30.
  3. ↑ "Coelostoma stultum (Walker, 1858)". www.gbif.org. Retrieved 2021-07-30.
  4. ↑ "Review of the Chinese species of the genus Coelostoma". biotaxa.org. Retrieved 2021-07-30.
  5. ↑ GHAHARI, HASSAN; SPRECHER-UEBERSAX, EVA; ZILIOLI, MICHELE (2014-11-25). "Review of the Chinese species of the genus Coelostoma Brullé, 1835 (Coleoptera: Hydrophilidae: Sphaeridiinae)". Zootaxa. 3887 (3): 354–376. doi:10.11646/zootaxa.3887.3.4. PMID   25543937 . Retrieved 2021-07-30.
  6. ↑ Liu, Hsing-Che; Hu, Fang-Shuo; Fikáček, Martin (2020-03-11). "Review of the genus Coelostoma of Taiwan with description of a new species (Coleoptera: Hydrophilidae)" (PDF). Acta Entomologica Musei Nationalis Pragae. 60 (1): 155–162. doi:10.37520/aemnp.2020.008. S2CID   216332820 . Retrieved 2021-07-30.
  7. ↑ Matsushima, Ryosuke; Haga, Takuma (2021-07-12). "Predation on the egg of Coelostoma stultum (Coleoptera: Hydrophilidae) by the alien species Deroceras laeve (Mollusca: Gastropoda: Agriolimacidae)". Molluscan Research. 41 (3): 254–261. doi:10.1080/13235818.2021.1946895. S2CID   237799718 . Retrieved 2021-07-30.


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