<i>Thalassarachna</i>and<i>Halacarellus</i>(Halacaridae: Acari): two separate genera

Bartsch, Ilse

doi:10.1080/00222939700770661

Cited by 13 publications

(7 citation statements)

References 19 publications

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“…collected by Verrill no mites similar to that described by Packard were found (Newell 1945), the synonymity of Thalassarachna verrilli and Acarus basteri was not accepted by all authors and during five decades both names Halacarellus and Thalassarachna were used in parallel. In 1997, the genus with two names was splitted into the two genera Thalassarachna, with the type species Acarus basteri Johnston, 1836, and Halacarellus, with the type species Halacarus balticus Lohmann, 1889(Bartsch 1997a. To maintain stability in the usage of the names Halacarus and Halacarus ctenopus a neotype was designated and described Bartsch (2001Bartsch ( , 2003.…”

Section: Methodsmentioning

confidence: 99%

Thalassarachna Basteri and T. Affinis (Acari, Halacaridae), History, Characters, Biology, and Distribution

Bartsch

2015

Ecol. Mont

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Thalassarachna basteri and T. affinis are known since more than a century. Though frequently found in shallow water areas, there exist only very few descriptions of their external characters. These and distinguishing characters are outlined, data of habitat, life cycle, feeding, and distribution are given. Adults and nymphs of T. basteri and T. affinis can be discriminated on the basis of the shape of the frontal spine and number of spines on leg I. Thalassarachna basteri is regularly found in cold-temperate and polar areas, both on the eastern and western coast of the North Atlantic whereas most records of T. affinis are from the warm-temperate eastern North Atlantic.

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Section: Methodsmentioning

confidence: 99%

Thalassarachna Basteri and T. Affinis (Acari, Halacaridae), History, Characters, Biology, and Distribution

Bartsch

2015

Ecol. Mont

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“…A Pacific/Atlantic distribution is documented in the genus Halacarellus. Species groups dominating in the northern Atlantic are not or rarely represented in the northern Pacific fauna (Bartsch 1997a). More and intensive sampling may change this statement.…”

Section: Distribution and Phylogenymentioning

confidence: 96%

“…Genera restricted to the Northern Atlantic and Arctic Sea are the exclusively phytophagous Metarhombognathus and Rhombognathides and the carnivorous Thalassarachna (Bartsch 1997a(Bartsch , 2003c.…”

Section: Distribution and Phylogenymentioning

confidence: 99%

Reflections on distribution and origin of the halacarid genus Isobactrus (Acari: Halacaridae)

Bartsch¹

2009

Mar Biodiv

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Isobactrus is a worldwide-spread genus. Most species live in the upper and middle area of a more or less regularly emerged zone. The species diversity is distinctly higher in the northern than in the southern hemisphere. At present, the genus consists of 29 species. An analysis of the geographical distribution of 36 external morphological characters revealed a uniformity in the combination of states of northern Pacific species, but a heterogeneity in the characters of northern Atlantic species. Several character states demonstrate a distinct north/south or north/tropics/ south distribution. A parsimony analysis revealed basal northern Atlantic clades, a northern Pacific clade that also includes Northern Atlantic species and an Indo-Pacific clade with a tropical area cluster. The present data suggest that the genus Isobactrus evolved in the Palaearctic Ocean and might represent a basal lineage within the family Halacaridae.

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“…Though the publication with the description of H. floridearum (in the year 1889) predates that of H. capuzinus (in the year 1893), the group was called H. capuzinus group (cf. Bartsch 1997). At the end of the 1990s, H. capuzinus was a well known species, in addition to the first description by Lohmann (1893), its characters had been outlined and illustrated by Schulz (1933), Newell (1947), Bartsch (1972), and Green and MacQuitty (1987), whereas the knowledge of H. floridearum was vague.…”

Section: Diagnosis Of the Halacarellus Capuzinus Group (Figure 1a-c)mentioning

confidence: 99%

“…On the basis of shared character combinations, species of a genus can often be assigned to natural groups. In Halacarellus the group most rich in species is the Halacarellus capuzinus group (Bartsch 1997). It includes H. capuzinus (Lohmann, 1893), H. chersonesus Bartsch, 1998, H. discretus Bartsch, 1998, H. floridearum (Lohmann, 1889), H. kamtchatkaensis Tuzovski, 2010, H. procerus (Viets, 1927), H. psammophilus (Krantz, 1976), H. southerni (Halbert, 1915), H. subcrispus Bartsch, 1978, and H. tropicalis Bartsch, 1984.…”

Section: Introductionmentioning

confidence: 99%

The Halacarellus Capuzinus Group (Halacaridae: Acari), Diagnoses, Keys and a Description of Halacarellus Floridearum (Lohmann)

Bartsch

2017

Ecol. Mont

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The genus Halacarellus, with its presently known 50 species, includes several species groups. The numerically most important one is the Halacarellus capuzinus group. The capuzinus group is diagnosed. Of each of the 10 species morphological characters are outlined, together with their geographical and ecological data. The number of setae on the leg segments proved to vary, variants are listed in a table. In addition to a tabular key, with the species' characters, a dichotomous key is given. The poorly known Halacarellus floridearum (Lohmann) is described.

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ThalassarachnaandHalacarellus(Halacaridae: Acari): two separate genera

Cited by 13 publications

References 19 publications

Thalassarachna Basteri and T. Affinis (Acari, Halacaridae), History, Characters, Biology, and Distribution

Thalassarachna Basteri and T. Affinis (Acari, Halacaridae), History, Characters, Biology, and Distribution

Reflections on distribution and origin of the halacarid genus Isobactrus (Acari: Halacaridae)

The Halacarellus Capuzinus Group (Halacaridae: Acari), Diagnoses, Keys and a Description of Halacarellus Floridearum (Lohmann)

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