Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009

Dronen, Norman O. & Blend, Charles K., 2015, Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007, Zootaxa 4053 (1), pp. 1-100 : 32-33

Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009

(Members of this genus have a postpharyngeal genital pore and the vitelline fields are confluent both anteriorly and posteriorly) ( Table 8 )

Diagnosis. Cyclocoelidae ; Cyclocoelinae. Body lanceolate to linguiform, often tapered anteriorly. Rudimentary oral sucker often present; rudimentary ventral sucker generally absent. Genital pore postpharyngeal. Ovary intertesticular forming a triangle with oblique testes near posterior arch of cyclocoel. Uterine coils somewhat extracecal, not generally invading posttesticular space. Vitelline fields confluent anteriorly and posteriorly forming continuous loop in body. Parasites in air sacs and lungs of birds.

NP = Not present. 1Estimated from figure in original description.

Tables

TABLE 8. Measurements, morphometric percentages and morphometric ratios for species of Circumvitellatrema Dronen, Greiner, Ialeggio & Nolan, 2009 and Psophiatrema Dronen & Kinsella, 2009 (Cyclocoelinae Stossich, 1902). Percentages of body length shown in brackets.

Characteristic C. momota Dronen, Greiner,Ialeggio & Nolan, 2009	C. phasidi (Stunkard, 1929) n. comb.	P. costaricensis (Brenes & Arroyo, 1962) n. comb.	P. greineri Dronen & Kinsella, 2009
Body length 7,400–10,500	12,000–13,000	9,800–12,200	8,400–11,000
Oral sucker width 170–220	―	NP	265
Pharynx width 300–380	350–450	391–453	360–390
Pharynx/oral sucker ratio 1:1.5–1:1.9	―	―	1:1.4
Cirrus sac length 390 [4%]	1,340 1 [11%]	―	340–530 [4–5%]
Ovary width 310–390	270–360	338–416	350–450
Mean testes width 665–795	810	1,031	580–1,055
Testes width/ovary width 1:1.9–1:2.5	1:2.6–1:3.0	1:2.5–1:2.9	1:1.6–1:2.0
Intertesticular space 1,225 1 length [12%]	1,080 1 [9%]	1,530 1 [13%]	1,600 1 [15%]
Posttesticular 470–860 space length [6–8%]	985 1 [8%]	540 1 [5%]	350–800 [6%]
Egg length 137–146	130	133–144	117–137
Egg width 68–74	64	66–77	57–78
Host Momotus momota Momotidae	Guttera plumifera Numididae	Momotus momota Momotidae	Psophia crepitans Psophiidae
Locality Audubon Zoo, New Orleans, USA	Democratic Republic of the Congo	Republic of Costa Rica	Guyana