Microcotyle incisa Linton, 1910

Mendoza-Franco, Edgar F., Tun, Mariela del Carmen Rosado, Anchevida, Allan de Jesus Duarte & Rodriguez, Rodolfo E. del Rio, 2018, Morphological and molecular (28 S rRNA) data of monogeneans (Platyhelminthes) infecting the gill lamellae of marine fishes in the Campeche Bank, southwest Gulf of Mexico, ZooKeys 783, pp. 125-161 : 125

Microcotyle incisa Linton, 1910

Microcotyle incisa Linton, 1910: original description; Fujii 1944: 155, figs 9-14 (redescribed and transferred to Microcotyloides ).

Type host.

Lutjanus griseus

Present study.

L. griseus

Locality/prevalence, mean abundance and intensity range.

San Francisco: 13 fish (mean TL 28.1cm; range 21.6-39) infected of 65 examined (20 %); abundance, 1; intensity of infection, 1-4 worms. Seyba Playa: 24 fish (TL 28.5; 23-37) infected of 45 examined (53 %); abundance, 2; intensity of infection, 2-5; Champoton: 10 fish (TL 28.3; 25.2-37) infected of 37 examined (27 %); abundance, 1; intensity of infection, 2-6.

Supplementary observations

(measurements based on eleven specimens). Body 2,789 (1,100-4,300; 11) long; greatest width 452 (325-700; 9). Oral suckers, each 68 (63-78; 13) long, 41 (30-50; 11) long wide. Clamps, each with 52 (48-60; 8) long, 79 (68-90; 11) wide; posterior clamps 53 (46-55; 6) long, 38 (30-45; 10) wide. Prostatic bulb 79 (70-98; 6) long, 32 (25-35; 3) wide. Testes ovoid, post-ovarian, 21 to 23 in number. Eggs ellipsoidal, each with 223 (200-232; 8) long, 104 (90-123; 8) wide.

Comments.

This species was originally assigned to Microcotyle based on specimens collected from L. griseus in Tortugas, Florida, and the Bermuda Islands, USA ( Linton 1910). Later, it was redescribed and transferred to Microcotyloides by Fujii (1944) based on specimens collected from the same host and locality. Present specimens from Campeche do not differ significantly from Fujii’s (1944) description. Microcotyle incisa is characterized in having a genital atrium without spines, male system with prostatic bulb (70-98 long, 25-35 wide vs. 76-85, 25 in Fujii’s specimens), vaginal pore in right lateral margin of body and eggs attached to one another by the very long, coiled anterior filament around the short posterior filament of the egg in front. Microcotyloides incisa has been reported in the Mexican Pacific on L. argentiventris , L. guttatus , Lutjanus jordani (Gilbert, 1898), and the sciaenid Umbrina xanti Gill, 1862 from Bahia de Chamela, Jalisco; on Lutjanus colorado Jordan & Gilbert, 1882 from Bahia de Banderas in Nayarit; on L. argentiventris from la Paz, Baja California; on L. guttatus from the coast of Acapulco, Guerrero; on Cirrhitus rivulatus Valenciennes, 1846 from the Cabo San Lucas, Baja California Sur, and Rabiruvia inermis [now Lutjanus inermis (Peters, 1869)] from Zihuatanejo; on L. cyanopterus from Isla Mujeres (Mexican Caribbean); and on Neomaensis griseus (now L. griseus ) from Bonnaterre, Florida, EU ( Fujii 1944, Mendoza-Garfias and Pérez-Ponce de León 1998).

Specimens deposited.

Eleven reference specimens in the CNHE (10605).