Pterygodermatites (Paucipectines) jagerskioldi ( Lent & Freitas, 1935 )

Simões, Mariana Brandão, Moreira, Narcisa Imaculada Brant & Leite, Yuri Luiz Reis, 2019, First record of Pterygodermatites (Pterygodermatites) (Nematoda: Rictulariidae) in South America, with the description of a new species from the Atlantic Forest, southeast Brazil, Zootaxa 4629 (1), pp. 96-108 : 98-99

Pterygodermatites (Paucipectines) jagerskioldi ( Lent & Freitas, 1935)

( Figs. 4–6 )

Females (11 specimens): robust body, white colour, 15.45 mm (11.13–19.78) length and 280 (160–400) width at the oesophageal-intestinal junction. Buccal capsule 35 (26–43) long and 49 (36–62) width. Oral opening 28 (27–29) in diameter, surrounded by 17–18 denticles ( Fig. 5B ). The oesophageal teeth, more evident, 15 (14–17) long ( Fig. 5A ). Nerve ring and excretory pore located at 158 (113–202) and 340 (208–472) from anterior end, respectively ( Fig. 4 ). Muscular portion of oesophagus 205 (120–290) long and 44 (39–50) wide; glandular portion 1.87 mm (1.85–1.89) long and 51 (42–60) wide. Two subventral rows with 74 (67–81) cuticular processes ( Fig. 6B ), 33 (30–36) prevulvar combs ( Fig. 4 ) and 41 (37–45) postvulvar spines, last spine located 364.75 (220.87–508.63) from posterior end ( Fig. 6B ). Level of transition from combs and spine is anterior to vulvar opening ( Fig. 4 ). The oesophageal-intestinal junction opens at the level of the 42nd (41–43) cuticular projection. Simple vulvar opening, with small transverse cuticular striations situated at 1.83 mm (1.35–2.32) from anterior end, at the level of the 30th (28–32) cuticular projection. The position of the vulva is anterior to the oesophageal-intestinal junction ( Fig. 4 ). Embryonated eggs 36 (34–38) long and 25 (21–29) wide. Conical tail, anus 123 (91–155) from posterior end. Caudal appendix 39 (24–54) long ( Fig. 5C ).

Material examined

Host: Myotis sp. ( Vespertilionidae ).

Prevalence and intensity: 15.38% (2 positives of 13 analysed). Parasites found in small intestine.

Specimens analysed: Eleven adult females, CHIOC 38701 ( MB 19) and CHIOC 38702 ( VP 538).

Locality: Brazil: Espírito Santo state: Sooretama county: Biological Reserve of Sooretama (18°59’16”S, 40°6’ 28”W); Fundão county: Timbuí (19°56’7”S, 40°24’46”W).

Remarks. Pterygodermatites (P.) jagerskioldi was described by Lent & Freitas (1935) from didelphid marsupials, Caluromys philander (L.), from Rio de Janeiro. It was later redescribed by Torres et al. (2007) parasitizing Gracilinanus agilis Burmeister, 1854 in swamplands (Pantanal) from Mato Grosso do Sul and Gracilinanus microtarsus Wagner, 1842 , from Rio de Janeiro. Both the original description and the redescription were based only on female specimens.

The specimens analysed in our study match the characteristics in the descriptions by Lent & Freitas (1935) and Torres et al. (2007), with a few small differences. According to the descriptions, P. (P.) jagerskioldi presents 16 denticles, whereas the females found in our study presented 17 or 18 denticles. Our specimens match the description regarding the differentiation of the cuticular processes and position of the oesophageal-intestinal junction anterior to the vulva. The number of pre-vulvar processes also corresponds to that observed by Torres et al. (2007), as well as the position of the last cuticular processes, supporting the identification of the parasites as P. (P.) jagerskioldi . This is the first record of this species parasitizing Chiroptera .

Figures

FIGURE 4. Female Pterygodermatites (Paucipectines) jagerskioldi, ventral view. ot: oesophageal teeth; nr: nerve ring; mp: muscular portion of oesophagus; gp: glandular portion of oesophagus; pc: prevulvar combs structure; v: vulva; ps: postvulvar spines structure; u: uterus; oij: oesophageal-intestinal junction; i: intestine.

FIGURE 5. (A–C) Female Pterygodermatites (Paucipectines) jagerskioldi, optical microscopy. A. Buccal capsule showing oral opening surrounded by denticles and oesophageal teeth (arrow). B. Anterior end showing denticles (arrow). C. Caudal ap- pendix.

FIGURE 6. (A–B) Female Pterygodermatites (Paucipectines) jagerskioldi, scanning electron micrographs. A. Anterior end showing cuticular processes prevulvar combs. B. Last spine-tail (arrow).