Table 4 Morphometric characters of Transversotrema hafniensis n. sp. cercariae. Comparison with other freshwater species within the genus Transversotrema and at present considered T. patialense. Synonym in parenthesis. Measurements shown as range (mean) in microns (µm)

Geographic location

Denmark

India

Solomon Islands

Philippines

India

India

Thailand

Thailand

Puerto Rico

Author

Present study

Soparkar (1924)

Olivier (1947)

Velasquez (1961)

Rao and Ganapati (1967)

Nadakal et al. (1969)

Ukong et al. (2007)

Krailas et al. (2014)

Perales Macedo et al. 2022

Reference

–

23

28

20

25

24

26

27

22

Body length

300–330 (312)

374–459

240–310 (270)

280–430 (350)

430–470

440–590 (505)

200–480 (301)

280–510 (370)

295–501 (392)

Body width

480–560 (507)

697–782

260–490 (507)

480–700 (590)

570–600

720–1020 (835)

338–750 (508)

425–670 (574)

399–824 (626)

Pharynx

Length

35–65 (48)

58–78

45–55

50

42

50–80 (60)

30–55 (49)

25–57

24–67 (54)

Pharynx width

30–60 (45)

–

–

–

57

–

10–63 (46)

28–51 (37)

26–75 (59)

Genital pore length

13–25 (19)

–

–

–

–

–

10–18 (14)

12–18 (15)

12–28 (21)

Genital pore width

10–30 (20)

–

–

–

–

–

–

12–18 (15)

16–34 (25)

Tail stem length

420–559 (462)

580–595

400–430 (420)

400–430 (420)

494

500–630 (567)

225–600 (351)

254–570 (360)

353–640 (490)

Tail-stem width

130–145 (138)

102

90–120 (110)

90–120 (110)

114

110–160 (136)

35–190 (81)

50–185 (98)

54–133 (97)

Furca length

250–280 (265)

340–374

180–250 (220)

180–250 (220)

–

300–360 (313)

125–300 (184)

145–310 (204)

173–338 (271)

Furca width

95–120 (106)

135

70–90 (80)

70–90 (80)

–

90–110 (103)

20–100 (50)

45–110 (66)

37–127 (80)

Appendage length

200–220 (210)

110–130

120–180 (150)

120–180 (150)

–

240–280

113–280 (154)

120–250 (160)

167–299 (207)

Appendage width

40–50 (45)

–

30–50 (40)

30–50 (40)

–

60–90 (76)

15–70 (39)

18–72 (47)

28–77 (54)