Hemilepistus ruderalis ( Pallas, 1771 )

Kashani, Ghasem M., 2019, Revision of the terrestrial isopods of the subgenus Hemilepistus (Desertellio) Verhoeff, 1930 (Isopoda: Oniscidea), Zootaxa 4555 (4), pp. 531-547 : 532-535

publication ID

https://doi.org/ 10.11646/zootaxa.4555.4.5

publication LSID

lsid:zoobank.org:pub:6DDA0B8A-831A-4C86-A5B3-97B811E39FF3

DOI

https://doi.org/10.5281/zenodo.5929153

persistent identifier

https://treatment.plazi.org/id/03B46901-FF93-3E29-FF14-F911996D8CFB

treatment provided by

Plazi

scientific name

Hemilepistus ruderalis ( Pallas, 1771 )
status

 

Hemilepistus ruderalis ( Pallas, 1771) View in CoL

Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3

Oniscus ruderalis Pallas, 1771 : 477.81.

Porcellio pallasii Brandt, 1833: 179 .

Hemilepistus ruderalis: Budde-Lund, 1885: 156 View in CoL .— Borutzky, 1945: 198.

Hemilepistus russonovae Borutzky, 1951: 164 View in CoL .

Material examined. Southern Russia, leg. Pallas, type of Hemilepistus pallasii , female, 19 mm (MNB 7080);

Azerbaidjan, Apsheron, April 1934, leg. B. H . Russonova, holotype of H. russonovae , male ( ZMMU, Mc-573) ; Azerbaidjan, Apsheron, April 1934, leg. B. H . Russonova, paratypes of H. russonovae , one male and two females ( ZMMU, Mc-573); Tauria (an ancient name for the present Crimean Peninsula), Muspetros, Budde-Lund collection, leg. Charusin, two males ( BMNH 1921.10.18:4133–4134) ; Kazakhstan, Kirghiz steppe, Budde-Lund collection, two males ( BMNH 1921 . 10.18:4135–4136) ; Kazakhstan, Dzhanybek, leg. N . Burnasheva, det. Borutzky, two males and five females ( ZMMU, Mc-699) ; Kazakhstan, Sary-Su River in downstream, 11 July 1948, det. Borutzky 1948, one male and two females ( ZMMU, Mc-572); Western Kazakhstan, Dzhanybek, experimental melon field, 20 April 1951, leg. N . Burnasheva, one male and one female ( ZMMU, Mc-701); Western Kazakhstan, Dzhanybek, under manure and stones, 14 April 1951, leg. N . Burnasheva, 13 females and 10 males ( ZMMU, Mc- 704); Western Kazakhstan, Dzhanybek, under shelters, 11 April 1952, leg. N . Burnasheva, two females ( ZMMU, Mc-697) .

Redescription. Maximum length of both male and female: 20 mm. Color brown in fixative ( Fig. 1A–D View FIGURE 1 ).

Head with well developed quadrangular lateral and shorter median lobes; frons with an incision in middle; vertex thoroughly covered with small rounded tubercles of more or less the same size ( Figs 1A, B View FIGURE 1 ; 2A View FIGURE 2 ). Antenna long equipped with long setae; fifth article of the peduncle to flagellum ratio 1.3:1; flagellum with two articles, proximal article almost two times as long as distal one ( Fig. 2B View FIGURE 2 ).

Pereon tergite I with rounded hind margin, granulated with several rounded tubercles of the same size or two markedly larger tubercles on the median part ( Figs 1A, B View FIGURE 1 ; 2A View FIGURE 2 ). Pereon tergites II and III with a row and few small tubercles, respectively ( Fig. 2A View FIGURE 2 ). Pereon tergites IV–VII smooth.

Pleon smooth, with continuous outline with pereon; telson short, triangular, with concave sides and acute or rounded apex, slightly surpassing uropod protopodites ( Figs 1C, D View FIGURE 1 ; 2C View FIGURE 2 ). Uropod protopodite with conspicuous incision on lateral margin; exopodite 1.5 times as long as telson ( Fig. 2C View FIGURE 2 ).

Pleopod exopodites I–V with monospiracular covered lungs ( Fig. 3B–F View FIGURE 3 ).

Male: Pereopod I merus and carpus with strong spine setae but without brushes of setae ( Fig. 2D View FIGURE 2 ). Pereopod VII ischium with straight ventral margin; merus and carpus equipped with strong spine setae ( Fig. 2E View FIGURE 2 ).

Pleopod endopodite I straight; apex with a short finger-like lobe equipped with a row of setae on inner margin, not surpassing the apex of endopodite ( Fig. 3A View FIGURE 3 ). Pleopod exopodite I with rounded hind margin ( Fig. 3B View FIGURE 3 ). Pleopod exopodites II–V as in Fig. 3C–F View FIGURE 3 .

Remarks. This species is close to H. pavlovskii in the shape of the head with well developed lateral lobes, and vertex with several rounded tubercles of more or less the same size; pereon tergites I–III with rounded tubercles decreasing in numbers posteriorly; male pereopod I merus and carpus without brushes of setae and pereopod VII ischium with straight ventral margin; but differs in having an incision in the middle of the frontal line and in distal part of pleopod endopodite I with a finger-like process at the apex ending at the same level with the summit of endopodite.

Borutzky (1951) described and figured Hemilepistus russonovae from Azerbaijan. He mentioned that this species is similar to H. ruderalis but differs from that in terms of having shorter antennae, different structure of the

lateral lobes of the head and the structure of pleopod endopodite I. However, reexamination of the type material of both species revealed that they belong to the same species. Distribution. Azerbaijan; Crimea; “Caucasus”; Turkmenistan, Kirghizistan, Kazakhstan; Russia.

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

H

University of Helsinki

ZMMU

Zoological Museum, Moscow Lomonosov State University

N

Nanjing University

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Agnaridae

Genus

Hemilepistus

Loc

Hemilepistus ruderalis ( Pallas, 1771 )

Kashani, Ghasem M. 2019
2019
Loc

Hemilepistus russonovae

Borutzky, E. 1951: 164
1951
Loc

Hemilepistus ruderalis: Budde-Lund, 1885 : 156

Borutzky, E. 1945: 198
Budde-Lund, G. 1885: 156
1885
Loc

Porcellio pallasii

Brandt, I. 1833: 179
1833
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