Anacanthorus daulometrus Cohen, Kohn & Boeger, 2012

Monteiro, Cassandra Moraes, Cohen, Simone Chinicz & Brasil-Sato, Marilia Carvalho, 2015, New species and reports of dactylogyrids (Monogenoidea) from Salminus franciscanus (Actinopterygii: Bryconidae) from the upper São Francisco River, Brazil, Zootaxa 3941 (1), pp. 137-143 : 140

Anacanthorus daulometrus Cohen, Kohn & Boeger, 2012

Host and locality. Salminus franciscanus ; São Francisco River, near Três Marias Reservoir (18º12’32”S; 45º15’41”W), State of Minas Gerais, Brazil (New host and geographic locality).

Site. Gills.

Previous records. Salminus brasiliensis (type-host): Paraná River, Paraná, Brazil (type-locality) ( Cohen, Kohn & Boeger, 2012)

Specimens studied. Vouchers CHIOC 38025a–e, 38026a–d, 38027a–d, 38028.

Measurements. (Based on 14 specimens “in toto”, original measurements in brackets). Body 481 (335–680; n=9) [525 (460–600; n=8)] long, 150 (83–293; n=9) [183 (105–220; n=8)] wide. Pharynx 35 (n=1) [36 (30–45; n=3)] long, [28–45 (34; n=3)] wide. Haptor 82 (52–160; n=10) [52 (34–70; n=15)] long, 91 (58–137; n=10) [127 (86–175; n=15)] wide. Anchors, bars absent. Hooks 24 (21–27; n=40) [23 (18–27; n=63)] long; FH loop about ½ shank length. MCO 75 (71–84; n=13) [88 (77–98; n=17)] long. Accessory piece 59 (56–64; n=8) [70 (65–78; n=17)] long. Testis [50, n=1] long, [66, n=1] wide. Germarium [40–54 (n=2)] long.

Remarks. Comparison of the specimens studied with those from the original description support that they are conspecific, even though they differ in the measurements. These differences are likely due to the the fact that each specimen series were collected from a different host species.

S. franciscanus is a new host record for A. daulometrus and the São Francisco Basin, State of Minas Gerais, Brazil, is a new geographical record.