Hydrachna bulgarensis K. Viets, 1940,

Davids, Kees, Sabatino, Antonio Di, Gerecke, Reinhard, Gledhill, Terence & Smit, Harry, 2005, On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 1: Hydrachnidae, Limnocharidae and Eylaidae, Zootaxa 1061, pp. 36-64: 39

publication ID

http://doi.org/ 10.5281/zenodo.170186

publication LSID

lsid:zoobank.org:pub:81B2332D-7AEB-406F-B2FC-6C2A36934B52

persistent identifier

http://treatment.plazi.org/id/03F7DE69-B04F-FFEE-FEF6-FD9FFE5F85DB

treatment provided by

Plazi

scientific name

Hydrachna bulgarensis K. Viets, 1940
status

 

Hydrachna bulgarensis K. Viets, 1940  , nov. stat.

Hydrachna perpera bulgarensis K. Viets, 1940 

Material examined: Holotype male, SMF 5917, Bulgarien, See im Rila­Gebirge, 2200 m, Valkanov coll.

Discussion: The author placed this taxon as a subspecies of the little known H. perpera  which is here synonymized with H. processifera  . Hydrachna bulgarensis  obviously belongs to the geographica  species group (Cx­ 4 with four setae, mediocaudal angles extended and narrow; gnathosoma with very long rostrum; palp slender, P­ 2 ventrally strongly concave, with 20 fine and short dorsal setae). Further characteristics are: P­ 3 proximally concave, most of the segment straight, with dorsal and ventral margins slightly converging distally, bearing five dorsal and six lateral setae; P­ 4 short, dorsal and ventral margins straight. In contrast to the figure of Viets (1940, Fig. 3View FIGURE 3. A), the genital setae are differentiated into two groups, with the setae flanking the gonopore a little longer and more densely arranged than on the remaining plate surface. In the form of the male gonopore with equally rounded anterior margin and the curved shape of the frontal sclerites, H. bulgarensis  is most similar to H. incisa  . Minor differences are found in the genital field not being indented anteriorly, the presence of an elevated median ridge between the acetabula­bearing areas and generally taller palp segments (L/H P­ 2 590 / 310, 1.90; P­ 3 570 / 190, 3.00; P­ 4 235 / 110, 2.14). For a better understanding of this taxon, possibly a junior synonym of H. incisa  , a study of the variability of the latter taxon is necessary.

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Hydrachnidae

Genus

Hydrachna

Loc

Hydrachna bulgarensis K. Viets, 1940

Davids, Kees, Sabatino, Antonio Di, Gerecke, Reinhard, Gledhill, Terence & Smit, Harry 2005
2005
Loc

Hydrachna perpera bulgarensis

K. Viets 1940
1940