Anenterotrema stunkardi Caballero & Grocott, 1959

Lunaschi, Lía I. & Drago, Fabiana B., 2011, A revision of Anenterotrema Stunkard, 1938 (Digenea: Anenterotrematidae) and a key to its species, Zootaxa 2775, pp. 50-64 : 60-61

Anenterotrema stunkardi Caballero & Grocott, 1959

( Figure 4 ; Table 4)

Syn. Anenterotrema eduardocaballeroi of Castiblanco & Vélez (1982) (new synonymy)

Material studied. 10 paratypes CNHE 1452. Ex Phyllostomus hastatus panamensis Allen (Phyllostomidae) (type host), small intestine, Cuevas de Chilibrillo (type locality), Panamá.

Hosts. Phyllostomidae : P. hastatus panamensis ; P. hastatus (Pallas) .

Localities. Panamá (Cuevas de Chilibrillo); Colombia (Puerto Triunfo, Antioquia).

References. Caballero & Grocott (1959); Castiblanco & Vélez (1982).

Redescription. [Based on 10 whole-mounts] Body small, pyriform, with maximum width in equatorial region. Forebody 0.8–1.1 times longer than hindbody. Ratio of body length to forebody length 1:2.3–2.7. Tegument unarmed. Anterior end without transverse fold of body wall at level of oral sucker. Oral sucker spherical, large, subterminal. Ventral sucker spherical, in middle third of body. Pharynx, oesophagus and intestinal caeca absent. Testes round, partly hidden by coils of the uterus, symmetrical, at level of ventral sucker. Cirrus sac perpendicular to long axis of the body, parallel in single specimen, similar in size or smaller than ventral sucker, entirely anterior to or slightly overlapping ventral sucker, contains long, coiled seminal vesicle, pars prostatic, prostatic cells and long cirrus. Genital pore in forebody, median, halfway between suckers. Ovary round, median or sub-median, near posterior end of body, well separated from testes by loops of uterus. Mehlis’ gland anterolateral to ovary; Laurer’s canal not seen; seminal receptacle not seen. Vitellarium follicular in hindbody, hidden by uterine loops; follicles of variable distribution, occupying almost entire width of body or concentrated in lateral region. Uterus long, occupying all available space in hindbody, extending laterally to level of cirrus sac in forebody,; contains numerous operculate eggs, with brown coloration. Ratio of body length to egg length 1:20–25. Metraterm thin-walled, parallel to cirrus sac, 238 long in single specimen. Excretory vesicle not seen. Excretory pore terminal or ventro-subterminal.

Remarks. Anenterotrema stunkardi is known only from its original record. This species is the only member of the genus characterized by having the ovary close to the posterior end of the body and separated from the testes by many loops of the uterus. This feature is shared with the specimens described by Castiblanco & Vélez (1982) as A.

eduardocaballeroi from P. hastatus in Colombia. Although these specimens are larger, they appear to be indistinguishable from A. stunkardi ( Table 4). Given that the relative calculated proportions and the morphological features of these specimens correspond with those of A. stunkardi , we consider that the specimens described as A. eduardocaballeroi by Castiblanco & Vélez are conspecific with the latter species.

Hosts Phyllostomus hastatus panamensis Phyllostomus hastatus

Locality Panamá Colombia

Source Caballero & Grocott (1959) Present study Castiblanco & Vélez (1982)

Bl 611–715 580–706 (649) 685–842

Bw 350–372 290–396 (356) 432–508

Osl 116–150 119–148 (125) 142–170

Osw 112–129 107–148(120) 168–214

Vsl 108–116 97–131 (113) 163–213

Vsw 104–112 100–155 (122) 185–204

Fb 216–316 227–304 (252)

Hb 256–319 (287)

Rtl 71–133 59–126 (81) Not described

Rtw 54–108 62–135 (82)

Ltl 62–125 64–130 (89) Not described

Ltw 67–121 69–135 (86)

Ol 58–75 71–100 (80) 90–150

Ow 62–83 71–95 (83) 70–109

Cs l 104–116 63–102 (79) 169–171

Csw 62–79 76–145 (109) 100–111

El 29 26–30 (29) 33–35

Ew 21 17–20 (18) 22–26

Ratios

Osw/Vsw 1.1–1.2 0.8–1.2 0.9–1

Vsl/Csl 1 1–1.7 1–1.2

Bl/El 21–25 20–25 21–26

Bl/Tl 5–10 5–11

Vsl/Tl 0.9–1.7 1–2

Figures

FIGURE 4. Anenterotrema stunkardi. A – C paratypes CNHE 1452, ventral view. B, enlarged view of terminal genitalia. Scales: A and C: 200 μm; B: 100 μm.