Plectus gisleni Allgén, 1951b

Holovachov, Oleksandr & Boström, Sven, 2015, Swedish Plectida (Nematoda). Part 10. The genus Deontolaimus de Man, 1880, Zootaxa 4034 (1), pp. 1-44 : 38-39

publication ID

https://doi.org/ 10.11646/zootaxa.4034.1.1

publication LSID

lsid:zoobank.org:pub:26C106F6-317F-4D42-8A49-BF4E691F20F1

DOI

https://doi.org/10.5281/zenodo.6098312

persistent identifier

https://treatment.plazi.org/id/013C87D2-6564-FF8A-FF66-FEA6C39EFE69

treatment provided by

Plazi

scientific name

Plectus gisleni Allgén, 1951b
status

 

Plectus gisleni Allgén, 1951b

( Fig. 22 View FIGURE 22 )

Female. Body slender, cylindrical over most of its length, tapering anteriorly in anterior half of pharyngeal region and posteriorly on tail; strongly ventrally curved upon fixation. Cuticle annulated. Lateral field, body pores, epidermal glands and subcephalic, cervical and somatic sensilla cannot be observed. Labial region rounded, continuous with body contour. Inner and outer labial, and cephalic sensilla indistinct. Amphid indistinct. Ocelli absent. Nerve ring, hemizonid and secretory-excretory system cannot be observed. Oral opening terminal. Onchiostyle present but strongly deteriorated. Pharynx cylindrical anteriorly, expanding posteriorly. Reproductive system didelphic, amphidelphic; ovary branches reflexed antidromously. Vagina straight. Epiptygmata and pars refringens vaginae absent. Rectum short. Tail conoid, ventrally curved. Spinneret acute, straight.

Discussion. The description and illustrations of this species superficially match the diagnosis of the family Camacolaimidae , particularly the genera Deontolaimus and Procamacolaimus , in having a single dorsal onchiostyle and a paired female reproductive system ( Allgén, 1951b: 181–182, Fig. 3 View FIGURE 3 a–c). Absence of males prevents more precise identification of this species. It is considered species inquirenda et incerta sedis within the family Camacolaimidae .

Kingdom

Animalia

Phylum

Nematoda

Class

Adenophorea

Order

Araeolaimida

Family

Plectidae

Genus

Plectus

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