Regimbartia attenuata

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Regimbartia attenuata
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Hydrophilidae
Genus: Regimbartia
Species:
R. attenuata
Binomial name
Regimbartia attenuata
(Fabricius, 1801)
Synonyms
  • Brachygaster indicus Mulsant, 1853
  • Brachygaster metallescens Mulsant, 1853
  • Hydrophilus attenuatus Fabricius, 1801
  • Volvulus aeneus Brullé, 1835
  • Volvulus profundus Sharp, 1873
  • Volvulus scaphiformis Fairmaire, 1879

Regimbartia attenuata, commonly known as Japanese water scavenger beetle, is a species of water scavenger beetle[1] widely distributed in the Old World,[2] from northern Australia and Japan westward to the countries of Arabian Peninsula, including Oman and Yemen. It is the only species of the genus occurring in the Arabian Peninsula.[3][4][5][6]

Distribution[edit]

It is found in India, Sri Lanka, Pakistan, Philippines, Sunda Islands, Australia, Japan, Formosa, Indonesia, Cambodia, Cochin-china, and Indochina.[7][8]

Description[edit]

The larval stage of the species is extensively described. Adult female lay eggs in egg cases on substrate such as leaves. Larva has almost symmetrical clypeolabrum, elongated prementum. Third instar larva is metapneustic. Body slender with strong setiferous projections. Thorax and abdomen consists with short to long, membranous projections. Body greyish white in color with brownish sclerotised parts. Head capsule is yellowish brown which is subquadrate, attenuated posteriad. Cervical sclerites are large, and subrectangular. Long, slender antenna with 3 segments. Mandibles slender, and slightly asymmetrical. Maxilla consists with 6-segments, and are slightly longer than antenna. Thoracic membrane covered with fine cuticular pubescence. Abdomen with 10 segments and tapering posteriorly. There are 12 setiferous, membranous projections on abdomen.[9]

Adult beetles have antennae composed of 8 segments (5+3).[7]

Biology[edit]

The species is an important link in the diet of many amphibians. Adult beetles were easily eaten by the frog species Pelophylax nigromaculatus, but about 90% of swallowed beetles are excreted quickly. Surprisingly, the beetles survive.[10][11][12] Water beetles carry oxygen under their exoskeleton. The exoskeleton protects the beetle from digestive juices in the frog. It allows the beetle to survive in the digestive system of the frog.

Adult beetles are identified as the natural hosts of the fungus Autoicomyces falcifer.[13] Adults are usually found from rabbit carcasses.[14]

References[edit]

  1. ^ "Regimbartia attenuata (Fabricius, 1801)". www.gbif.org. Retrieved 2021-07-30.
  2. ^ "New Data on the Distribution of Old World Hydrophilidae (Coleoptera)" (PDF). ACTA COLEOPTEROLOGICA XXI. 1. 43 - 51 1.2.2005 ISSN 0178-7217. Retrieved 2021-07-30.
  3. ^ "Order Coleoptera, family Hydrophilidae" (PDF). Arthropod fauna of the UAE, 3: 135–165. Retrieved 2021-07-30.
  4. ^ "Description of the larval stages of the berosine genera Berosus and Regimbartia based on the Japanese species B. japonicus and R. attenuata". biotaxa.org. Retrieved 2021-07-30.
  5. ^ Rodriguez, Georgina; Torres, Patricia L. M.; Archangelsky, Miguel (2020-01-16). "Chaetotaxy and morphometry of the head capsule and head appendages of the genus Derallus Sharp (Coleoptera: Hydrophilidae)". Zootaxa. 4722 (5): 423–442. doi:10.11646/zootaxa.4722.5.2. PMID 32230604. S2CID 213474098. Retrieved 2021-07-30.
  6. ^ Dalal, Jyoti; Sharma, Sapna; Bhardwaj, Tapeshwar; Dhattarwal, S.K.; Verma, Kapil (2020-08-01). "Seasonal study of the decomposition pattern and insects on a submerged pig cadaver". Journal of Forensic and Legal Medicine. 74: 102023. doi:10.1016/j.jflm.2020.102023. PMID 32784108. S2CID 221125845. Retrieved 2021-07-30.
  7. ^ a b "On a Collection of Aquatic Beetles (Order: Coleoptera: Gyrinidae, Dytiscidae and Hydrophilidae) of Renuka Wildlife Sanctuary, Himachal Pradesh, India". Rec. zool. Surv. India : 113(Part-2): 61-67, 2013. Retrieved 2021-07-30.
  8. ^ "Dytiscidae and Hydrophilidae) PROMMALIA, II, 51-62". PROMMALIA, II, 51-62. Retrieved 2021-07-30.
  9. ^ "Description of the larval stages of the berosine genera Berosus and Regimbartia based on the Japanese species B. japonicus and R. attenuata (Coleoptera: Hydrophilidae)". Acta Entomologica Musei Nationalis Pragae 55(1):47-84. Retrieved 2021-07-30.
  10. ^ Sugiura, Shinji (August 2020). "Active escape of prey from predator vent via the digestive tract". Current Biology. 30 (15): R867–R868. doi:10.1016/j.cub.2020.06.026. PMID 32750342. S2CID 220938872. Retrieved 2021-07-30.
  11. ^ "Beetles eaten alive observed escaping from frog's other end". ABC News. Retrieved 2021-07-30.
  12. ^ "An insect species can actively escape from the vents of predators via the digestive system". Research at Kobe. Retrieved 2021-07-30.
  13. ^ Rossi, W (2018). "New species and new records of Laboulbeniales (Ascomycota) from Thailand" (PDF). Mycosphere. 9 (6): 1151–1172. doi:10.5943/mycosphere/9/6/6. Retrieved 2021-07-30.
  14. ^ Dalal, Jyoti; Sharma, Sapna; Bhardwaj, Tapeshwar; Dhattarwal, S. K.; Verma, Kapil (2021-04-03). "A seasonal study of the decomposition pattern and insects on submerged rabbit carcases". Oriental Insects. 55 (2): 280–292. doi:10.1080/00305316.2020.1789009. S2CID 225532749. Retrieved 2021-07-30.


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