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2 January 2024 New Data on Pseudomagnivitellinum ictalurum (Trematoda)
Michael A. Barger
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Pseudomagnivitellinum ictalurum Dronen and Underwood, 1980 (Trematoda), was originally described from black bullheads (Ameiurus melas) from roadside ditches in the Brazos River watershed in Texas, U.S.A. New specimens of this species were collected from the type host from Little Pine Island Bayou east of the type locality in the Neches River watershed in Texas. The newly collected specimens confirm the species-level taxon as one similar to members of Magnivitellinum Kloss, 1966, but with an oral sucker larger than the ventral sucker, an ovary displaced posteriorly from the ventral sucker, and probably an I-shaped excretory vesicle. The distribution of body spines is most dense at the anterior end, diminishing toward the posterior, and these features argue for placing the taxon in the recently erected Alloglossidiidae rather than in the Macroderoididae, as it had previously been classified. In most other respects, the newly collected specimens conform to the features of the original species description, except that very large, fully gravid specimens were not collected, and the position of the ovary is now documented as variable.

Michael A. Barger "New Data on Pseudomagnivitellinum ictalurum (Trematoda)," Comparative Parasitology 90(2), 106-110, (2 January 2024).
Published: 2 January 2024
Ameiurus melas
Big Thicket National Preserve
black bullhead
Macroderoididae Pseudomagnivitellinum ictalurum
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