Redescription and resurrection of the status of Joyeuxiella gervaisi (Setti, 1895) (Eucestoda, Dipylidiidae)5

Schuster, R. K.; Mehmood, N.; Varcasia, A.; Veneziano, V.

doi:10.2478/helm-2023-0016

Figures & Tables

Joyeuxiella gervaisi (Setti, 1895) scolex from domestic cat from Dubai, UAE. The stinkhorn-shaped rostellum consists of a slender and longer stalk and conical shaped armed cap.

Joyeuxiella gervaisi (Setti, 1895) rostellum armed with rose-thorn hooks from domestic cat from Dubai, UAE.

Joyeuxiella gervaisi (Setti, 1895) from domestic cat from Dubai, UAE, mature segment. The anterior end of the segment is occupied by convolutes of vasa deferens (bar: 100 μm).

Joyeuxiella gervaisi (Setti, 1895) gravid segment from domestic cat from Dubai, UAE. Egg capsules are located between longitudinal excretory vessels (bar: 500 μm).

Cylindrical jar ‘Cest 254’ of the zoological museum of University of Naples. This vessel contains the cestodes collected by E. Setti. The host Gazella abyssinica is wrong.

Label taken from inside of the jar ‘Cest 254’. Here, the spelling of the host is correct but the species name, Dipylidium gervasi, name is misspelled.

Maximum-likelihood tree (partial mitochondrial COI) computed through MEGA-X software based on kimura-2 parameter and 1000 bootstrap replicates. Taenia hydatigena was taken as the outgroup. The geographical origin and host from which the sequence was identified are also mentioned. Bootstrap values are given as number on the nodes. The sequences for Joyeuxiella gervaisi and Joyeuxiella pasqualei retrieved in this study are depicted in red.

Metrical data of J_ gervaisi and J_ fuhrmanni according to various sources_ (Sizes are given in μm unless stated otherwise, – : these parameters were not given in the description)

	Author:	Setti (1895)	Baer (1926)	Mettric & Beverly-Burton (1961)	Jones (1983)	This paper
	Species:	J. gervaisi	J. fuhrmanni	J. fuhrmanni	J. fuhrmanni	J. gervaisi
	Host:	genet	serval	genet	wild felids, domestic cat	domestic cat
	(Origin):	(Eritrea)	(South Africa)	(Rhodesia)	(South Africa)	(Dubai)

Parameter

Strobila	length	10 – 40 mm	up to 30 mm	up to 94 mm	10.5 – 80 mm	30 – 60 mm
Strobila	width	1 – 1.5 mm	1.6 mm	1.6	1 mm	0.9 – 1.2 mm
Proglottids	number	–	180 – 200	–	34 – 165	52 – 85
Scolex	width	250	240	350	132 – 333	360 – 470
Scolex	length	150	–	350	141 – 2500	282 – 436
Rostellum	length	120	230	140 – 170	141 – 268	205 – 225
Rostellum	width	–	100	90	56 – 137	61 – 98
Hooks	circles	8 – 12	14 – 16	17 – 19	12 – 16	10 – 12 (13)
Hooks	size	10	8	12 – 16	12 – 17	10 – 12
Suckers	diameter	100	200	90×130 − 140	94 – 165	115 – 135
Mature segment	length	wider than long	trapezoid	1100	114 – 1188	330 – 690
Mature segment	width			700	619 – 1667	825 – 1230
Cirrus sac	length	–	250 – 300	240 – 260	141 – 273	150 – 240
Cirrus sac	diameter	–	20 – 50	50 – 70	47 – 118	75 – 120
Cirrus	length	500	300	270	–	up to 520
Cirrus	diameter	15	20	20	14 – 21	15 – 21
Testes	number	36 – 46	40 – 50	33 – 42	20 – 60	28 – 38
Testes	diameter	–	70	–	47 – 81	50 – 70
Ovary	diameter	–	–	120 – 160	188 – 282	130 – 250
Yolk gland	size	–	–	40 – 60	45 – 165	60 – 96
Receptaculum seminis	length	–	–	100	66 – 212	75 – 130
Receptaculum seminis	diameter	–	–	50	28 – 85	25 – 60
Gravid segment	length	–	2100	4900	1400 – 4000	2100 – 4050
Gravid segment	width	–	900	1600	600 – 1800	840 – 1170
Egg capsule	diameter	50	42 – 46	54 – 59	50 – 71	50 – 80

Redescription and resurrection of the status of Joyeuxiella gervaisi (Setti, 1895) (Eucestoda, Dipylidiidae)5

Figures & Tables

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Metrical data of J_ gervaisi and J_ fuhrmanni according to various sources_ (Sizes are given in μm unless stated otherwise, – : these parameters were not given in the description)

Paradigm

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