Cichlidogyrus berminensis, Pariselle, Antoine, Bitja Nyom, Arnold R. & Bilong Bilong, Charles F., 2013

Pariselle, Antoine, Bitja Nyom, Arnold R. & Bilong Bilong, Charles F., 2013, Checklist of the ancyrocephalids (Monogenea) parasitizing Tilapia species in Cameroon, with the description of three new species, Zootaxa 3599 (1) : -

Cichlidogyrus berminensis n. sp.

( Fig. 3)

Type host: Tilapia bemini Thys van den Audenaerde.

Other hosts: Tilapia gutturosa Stiassny, Schliewen & Dominey , Tilapia bakossiorum Stiassny, Schliewen & Dominey , Tilapia thysi Stiassny, Schliewen & Dominey.

Site: Gills.

Type locality: Lake Bermin, Cameroon ( 5 °09’ 22 ” N; 9 ° 37 ’ 54 ” E).

Specimens deposited: Holotype and 4 paratypes MNHN n° HEL 274. Paratypes MNHN ( 5) n° HEL 275; NHMUK ( 5) n° 2012.8.30.2; RMCA ( 5) n° 37703.

Etymology: Named after the type locality.

Description (based on 25 individuals): adults 447 ( 330–724) ( 25) long. 65 ( 32–91) ( 25) wide at level of penis. Pharynx globular 26 ( 19–37) ( 25) in diameter. Dorsal anchor with guard four times longer than shaft and regularly curved blade: a = 35 ± 1.8 ( 30–38) ( 49), b = 27 ± 1.3 ( 23–29) ( 49), c = 3 ± 0.6 ( 1–4) ( 49), d = 12 ± 1.1 ( 9–14) ( 49), e = 9 ± 0.7 ( 7–11) ( 47). Short arched dorsal transverse bar, thick at the middle, tapering toward the extremities: x = 23 ( 20–25) ( 25), w = 5 ( 4–7) ( 25), y = 8 ( 6–13) ( 25), h = 14 ± 1.3 ( 11–17) ( 50). Ventral anchor with guard three times longer than shaft, blade regularly arched: a = 36 ± 1.8 ( 32–38) ( 46), b = 33 ± 2.1 ( 29–38) ( 47), c = 3 ± 0.7 ( 2–5) ( 48), d = 9 ± 0.9 ( 6–10) ( 47), e = 12 ± 0.8 ( 11–14) ( 48). V–shaped and thick ventral transverse bar, branches straight: x = 31 ± 2 ( 28–35) ( 50), w = 5 ( 4–7) ( 25). First uncinuli of medium size, third to seventh short: U I = 18 ± 0.9 ( 16–20) ( 49), U II = 11 ± 0.5 ( 11–13) ( 38), U III = 17 ± 0.8 ( 14–18) ( 50), U IV = 19 ± 0.8 ( 17–21) ( 48), U V = 19 ± 0.8 ( 18–21) ( 50), U VI = 19 ± 0.8 ( 17–20) ( 45), U VII = 16 ± 0.8 ( 14–18) ( 46). Male copulatory complex (MCC) with a short and slightly sinuous penis (Pe) starting as a bulb, a marked narrow heel (He) with rounded ending and a simple and straight accessory piece (AP) ending in a large hook: Pe = 27 ( 24–30) ( 25), He = 5 ( 4–6) ( 25), AP = 28 ( 25–30) ( 25). No sclerotised vagina.

Remarks: By the morphology of the U 1 (of medium size), C. berminensis n. sp. resembles Cichlidogyrus albareti Pariselle & Euzet, 1998 ; Cichlidogyrus arfi Pariselle & Euzet, 1995 ; C. arthracanthus ; Cichlidogyrus inconsultans ( Birgi & Lambert, 1986) ; Cichlidogyrus kothiasi Pariselle & Euzet, 1994 ; Cichlidogyrus muzumani Muterezi Bukinga, Vanhove , van Steenberge & Pariselle, 2012; Cichlidogyrus nandidae Birgi & Lambert, 1986 ; Cichlidogyrus nshomboi Muterezi Bukinga, Vanhove , van Steenberge & Pariselle, 2012 and Cichlidogyrus reversati Pariselle & Euzet, 2003 . C. albareti , C. arfi , C. arthracanthus , C. inconsultans , C. muzumani and C. nandidae all have a much longer penis (> 100,> 60,> 100,> 190,> 60,> 120 respectively vs. 27). C. nshomboi had a spirally coiled thickening at the extremity of the penis ( vs. absence); C. kothiasi had a spirally coiled penis ( vs. straight); and C. reversati has its penis extremity folded back ( vs. straight). The MCC of C. berminensis n. sp. resembles that of Cichlidogyrus berradae Pariselle & Euzet, 2003 and that of Cichlidogyrus yanni Pariselle & Euzet, 1995 , but these two species show a very large uncinuli pair 1 ( 26 and 24 vs. 18).