Haasea

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Haasea
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Diplopoda
Order: Chordeumatida
Family: Haaseidae
Genus: Haasea
Verhoeff, 1895
Type species
Craspedosoma flavescens
Latzel, 1884
Synonyms
  • XiphogonaCook, 1895
  • OrobainosomaVerhoeff, 1897
  • RhopalogonaSilvestri, 1898
  • DeuterohaaseaVerhoeff, 1898

Haasea is a genus of millipedes in the family Haaseidae. [1] This genus is the largest in this family, with 17 accepted species. [2] Millipedes in this genus have either 28 or 30 segments (counting the collum as the first segment and the telson as the last). [2]

Contents

Distribution

Millipedes in this genus are widespread in central Europe, with a distribution across about 650 km from the Harz mountains in northern Germany down to the Durmitor massif in Montenegro, and from Luxembourg and the French-Swiss border across to the Eastern Carpathian mountains in Romania. Most species appear in the Alps and the Dinarides, also extending to the Bohemian massif, the Ore mountains, the Sudeten mountains, and both the Western and Eastern Carpathian mountains, across the Pannonian Basin, and to the Southern Carpathian mountains and the Balkan mountains. Although these millipedes are found in most of the Alps, they are absent from the Western Alps, including the Pennine Alps. [2]

Taxonomy

The German zoologist Karl W. Verhoeff first proposed Haasea in 1895 as a subgenus in the genus Craspedosoma to contain three species, including C. flavescens. [3] Later in same year, however, the American biologists Orator F. Cook and Guy N. Collins instead proposed Xiphogona as a genus for C. flavescens, which they designated as the type species. [4] Verhoeff responded in 1897 by proposing Orobainosoma as a genus for the same species. [2] In 1898, the Italian zoologist Filippo Silvestri proposed Rhopalogona as a genus to replace Haasea. [5] More names and confusion followed, until the Dutch myriapodologist Casimir Albrecht Willem Jeekel recognized the validity of Haasea as a genus with Haasea flavescens as the type species in 1971. Authorities have since deemed all the other names proposed for this genus to be junior synonyms of Haasea. [2]

Description

Species in this genus have 28 or 30 segments and range from 6.5 mm to 12 mm in length. They vary in pigmentation, ranging from poorly pigmented to light or dark brown, but most species are a yellowish brown. Diagnostic features include the reduced size of the tenth leg pair in males compared to the other walking legs. [2] Furthermore, the coxal processes of the posterior gonopods in the male have two or three branches rather than being unipartite. [6] [2]

Species

This genus includes 17 species: [1] [2]

Related Research Articles

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<span class="mw-page-title-main">Chordeumatida</span> Order of millipedes

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<i>Trachysphaera</i> Genus of millipedes

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Chamaesomatidae is a family of millipedes belonging to the order Chordeumatida. These millipedes range from 3.3 mm to 12 mm in length and are found in Europe and North Africa. Adult millipedes in this family have 26, 28, or 30 segments. This family includes the species Chamaesoma broelemanni, notable as one of only a few chordeumatidan species with only 26 segments in adults, four fewer segments than typically found in adults in this order. The adult female of this species has only 42 pairs of legs, and the adult male has only 40 pairs of walking legs, excluding two pairs of gonopods.

Haaseidae is a family of millipedes belonging to the order Chordeumatida. These millipedes are found in central and southeastern Europe. Adult millipedes in this family range from 4.5 mm to 12 mm in length and have either 28 or 30 segments.

Attemsiidae is a Palaearctic family of millipedes belonging to the order Chordeumatida. Adult millipedes in this family have 30 segments.

Entomobielziidae is a family of millipedes belonging to the order Chordeumatida. This family includes the genus Tianella, notable for featuring adult millipedes with 29 segments, a number not found in the adults of any other chordeumatidan genus. Adults in most Tianella species have 29 segments. In the Tianella species with 29 segments, adult females have 48 pairs of legs, as one would expect in adult female chordeumatidans with one segment fewer than the 30 usually found in this order.

Devillea is a genus of flat-backed millipedes in the family Xystodesmidae. These millipedes are rare and limited to caves. Species in this genus are found in Sardinia, Capri, and southern France in the Maritime Alps. These species are notable for featuring more than the 20 segments usually found in the order Polydesmida. This genus is one of only two genera in this order to feature these extra segments and the first such genus to be discovered.

Opisthocheiron canayerensis is a species of millipede in the family Opisthocheiridae. This species is found in France, far inside deep caves. This millipede is notable as one of only a few species in the order Chordeumatida with only 26 segments in adults, four fewer segments than typically found in adults this order.

Chamaesoma is a monotypic genus of millipede in the family Chamaesomatidae, and Chamaesoma broelemanni is the only species in this genus. This millipede is notable as one of only a few species in the order Chordeumatida with only 26 segments in adults, four fewer segments than typically found in adults this order. This species lives on the surface of the soil and is distributed across most of France and Luxembourg. The genus Chamaesoma and its only species were first described by the German zoologist Karl W. Verhoeff in 1913 based on type material found by the French zoologists Henri Brölemann and Henri Ribaut under wet leaf litter near St. Béat in the Pyrenees in France.

Haasea hungarica is a species of millipede in the family Haaseidae. This species is a eutroglophile, capable of spending its entire life cycle in a cave but also capable of living on the surface outside of caves. Although these millipedes are often found in caves, this species has also been found on the soil surface in forests.

References

  1. 1 2 "MilliBase - Haasea Verhoeff, 1895". www.millibase.org. Retrieved 2024-06-29.
  2. 1 2 3 4 5 6 7 8 Antić, Dragan; Akkari, Nesrine (2020-06-16). "Haasea Verhoeff, 1895—a genus of tumultuous history and chaotic records—redefinition, revision of taxonomy and geographic distributions, with descriptions of two new species from Austria and Serbia (Diplopoda, Chordeumatida, Haaseidae)". Zootaxa. 4798 (1): zootaxa.4798.1.1. doi:10.11646/zootaxa.4798.1.1. ISSN   1175-5334. PMID   33056685.
  3. ↑ Verhoeff, Carl (1895). "Aphorismen zur Biologie, Morphologie, Gattungs- und Art-Systematik der Diplopoden". Zoologischer Anzeiger (in German). 18 (476–478): 203–244 [217–218] – via Biodiversity Heritage Library.
  4. ↑ Cook, O.F.; Collins, G.N. (1895). "The Craspedosomatidae of North America". Annals of the New York Academy of Sciences. 9: 1–100 [3]. doi:10.1111/j.1749-6632.1896.tb55430.x – via Biodiversity Heritage Library.
  5. ↑ Silvestri, F. (1898). "Contributo alla conosceza dei Diplopodi della fauna mediterranea". Annali del Museo Civico di Storia Naturale di Genova, Serie 2. 18: 654–669 [666] – via Biodiversity Heritage Library.
  6. ↑ Antić, Dragan; Spelda, Jörg (2022-12-08). "Maurieseuma, a new genus to accommodate Hylebainosoma nontronense Mauriès & Kime, 1999, and the revalidation of the genus Romanosoma Mauriès, 2015 (Diplopoda: Chordeumatida: Haaseidae)". Zootaxa. 5219 (2): 193–200 [198]. doi:10.11646/zootaxa.5219.2.8. ISSN   1175-5334. PMID   37044868.
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