Ropalopus insubricus

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Ropalopus insubricus
Ropalopus Insubricus Male.jpg
Male Specimen of Ropalopus Insubricus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Infraorder: Cucujiformia
Family: Cerambycidae
Genus: Ropalopus
Species:
R. insubricus
Binomial name
Ropalopus insubricus
Synonyms [1]
  • Callidium insubricumGermar, 1824
  • Ropalopus ungaricus insubricusGermar, 1824
  • Callidium fischeriKrynicki, 1829
  • Ropalopus insubricus fischeriKrynicki, 1829
  • Ropalopus insubricus var. viridipennisPic, 1926
  • Rhopalopus viridipennisPic, 1926

Ropalopus insubricus is a rare species of European long-horned beetle in the family Cerambycidae. [1] It was first documented by Ernst Friedrich Germar in 1824 and first assessed for the IUCN Red List in 2009. [1] [2] The species is quite rare in Europe and is classified as Near Threatened. [2]

Contents

Description

Ropalopus insubricus is a species within the genus Ropalopus. It is characterized by its distinct morphological features. [1] The species measures between 14 mm (0.55 in) and 31 mm (1.22 in) in length, it is identified by densely reticulated elytra lacking wrinkles in the basal half. [3] [4] The pronotum is unevenly tapered, featuring a large rhomboid area with slight punctation. [4] In males, the lustrous pronotum contrasts with other subspecies, and the antennae are notably longer than the elytra. [4] Pronotum stains are characterized by deeper punctation, narrow irregularities, and a non-merging pattern. [4] Ropalopus insubricus is diurnal, with the species being particularly active during the warm daylight hours. [5]

Life cycle

The life cycle of the Ropalopus insubricus beetle species spans 2 to 3 years. Adult beetles emerge ready to fly between May and August. [6] [7] The larvae of Ropalopus insubricus undergo development in damaged sections of living trees, pupating in the heartwoods under the bark. [2] [4] [7] Observed variations in the pronotum and elytra shape, as well as the distinct body coloration, within the same population are likely a result of larval development and pupation occurring under the bark and inside the wood of living trees, exposing the immature stages to different pressures. [4]

Distribution and habitat

Ropalopus insubricus, classified as an obligate saproxylic species, demonstrates a strong dependence on decaying wood throughout its life stages. [2] Preferring mountainous environments, this species is prevalent from northern Italy through Slovakia to Hungary and the Balkans, extending into westernmost Turkey. [2] [4] [8] The species is extremely rare only having two recorded occurrences in Turkey over the past 114 years. [9] Host trees, particularly broad-leaved species such as Acer, Ficus, Fraxinus, Alnus, and Fagus, play a crucial role in supporting the life cycle of this species. [2]

Ropalopus insubricus exhibits a degree of adaptability beyond montane habitats, as evidenced by its presence on road verges or Ficus plantations. [2] Suspected to require a warm climate at low altitude for optimal development, Ropalopus insubricus is distributed across more temperate regions of Europe. [2] Ropalopus insubricus can only be found at elevations lower than 600 meters (1968.5 feet) above sea level. [4]

Conservation status

Ropalopus insubricus is classified as Near Threatened on the IUCN Red List due to the rarity of the species. [2] Deforestation and forest fragmentation are contributing factors to its classification. [2]

See also

Related Research Articles

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References

  1. 1 2 3 4 Zicha, Ondrej. "BioLib: Biological library". www.biolib.cz. Retrieved 2023-12-25.
  2. 1 2 3 4 5 6 7 8 9 10 "Ropalopus insubricus". iucnredlist.org. Retrieved December 24, 2023.
  3. ↑ "Ropalopus ungaricus insubricus". www.cerambyx.uochb.cz. Retrieved 2023-12-25.
  4. 1 2 3 4 5 6 7 8 Karpinski, Lech; Szczepanski, Wojciech T.; Kruszelnicki, Lech (October 30, 2019). "Revision of the Ropalopus ungaricus/insubricus group (Coleoptera: Cerambycidae: Callidiini) from the western Palaearctic region" (PDF). Zoological Journal of the Linnean Society. 189 (4): 1176–1216. doi:10.1093/zoolinnean/zlz154 – via cerambyx.uochb.cz.
  5. ↑ Simon, A. (1954). "Note sur l'Éthologie de Rhopalopus Insubricus Germ. (Col. Cerambycidae)". Annales de la Société entomologique de France. 123 (1): 35–42. doi:10.1080/21686351.1954.12279073 – via Taylor & Francis Online.
  6. ↑ "Ropalopus insubricus". cerambyx.uochb.cz. Retrieved 2024-01-05.
  7. 1 2 "Ropalopus insubricus (Germar, 1824) - Xylophagous Insects". www.forestpests.org. Retrieved 2024-01-05.
  8. ↑ Paleart, Cerambycidae of the. "Longhorn beetle - Cerambycinae - Callidiini - Ropalopus insubricus insubricus Germar, 1824". Cerambycidae of the Paleart (in Czech). Retrieved 2023-12-25.
  9. ↑ Cebeci, Hüseyin; Özdikmen, Hüseyin; Turgut, Semra (February 6, 2011). "Callidiine species in Turkey with zoogeographical remarks and some interesting and rare records (Coleoptera: Cerambycidae: Cerambycinae)". Journal of Natural History. 45 (7–8): 475–483. Bibcode:2011JNatH..45..475C. doi:10.1080/00222933.2010.534193. S2CID   84403179 – via Taylor & Francis Online.


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