Xyo pseudohistrix Travassos & Kloss, 1958 (Hystrignathidae)

Carreno, Ramon A., 2018, Pinworms (Nematoda: Thelastomatoidea) from Insects Collected in Mississippi, USA, with description of a new species of Protrellus Cobb, 1920 from the Cockroach Ischnoptera deropeltiformis Brunner von Wattenwyl, 1865 (Blattaria: Ectobiidae), Zootaxa 4531 (4), pp. 567-577 : 574

publication ID

https://doi.org/ 10.11646/zootaxa.4531.4.7

publication LSID

lsid:zoobank.org:pub:722C5A9D-7241-43D5-A2B1-476E57CCD806

DOI

https://doi.org/10.5281/zenodo.5963356

persistent identifier

https://treatment.plazi.org/id/038B8795-3B1E-FFC5-FF77-FB0BE50FFA2B

treatment provided by

Plazi

scientific name

Xyo pseudohistrix Travassos & Kloss, 1958 (Hystrignathidae)
status

 

Xyo pseudohistrix Travassos & Kloss, 1958 (Hystrignathidae)

Measurements. Females (n=2): Body length 3538 ± 265 (3350–3725); maximum width 155 ± 21(140–170); buccal cavity 9 ± 2 (8–10); oral annule length 13 ± 4 (10–15); oral annule width 34 ± 2 (33–35); esophagus 584 ± 30 (563–605); length of anterior corpus groove 65; corpus length 448 ± 25 (430–465); corpus maximum width 43 ± 11 (35–50); isthmus 50; bulb length 90 ± 11 (83–98); bulb width 75 ± 7 (70–80); vulva from anterior end 1968 ± 11 (1960–1975); vulva from posterior end 1570 ± 255 (1390–1750); tail 390 ± 57 (350–430); body width at tail 75 ± 7 (70–80); egg length 110 ± 8 (100–120); egg width 40 ± 4 (33–40); a = 23 ± 1 (22–24); b = 6 ± 1 (6–6.2); c = 9 ± 1 (9–10); V = 56 ± 4 (52–59).

This species is distinguished from H. rigidus in having 32 longitudinal rows of spines rather than 16. Our measurements are consistent with the few data provided in a redescription of the species by Christie (1934). The species described by Christie was considered to be a synonym of Xyo histrix Cobb, 1898 , the type species from Australia. However, Travassos & Kloss (1958) distinguished the North American species as separate from the Australian species. Xyo pseudohystrix was considered a species inquirenda by Hunt (1982) but retained in a more recent revision of the Hystrignathidae (Adamson & van Waerebeke, 1992b) . It was not possible to further clarify the status of X. pseudohystrix in this study. Few records of this species exist, and its taxonomic status is in need of revision.

Kingdom

Animalia

Phylum

Nematoda

Class

Chromadorea

Order

Spirurida

Family

Hystrignathidae

Genus

Xyo

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