Trypanoxyuris kemuimae, Solórzano-García & Ospina & Rondón & León, 2020

Solórzano-García, Brenda, Ospina, Andrés Link, Rondón, Silvia & León, Gerardo Pérez-Ponce de, 2020, Pinworms of the red howler monkey (Alouatta seniculus) in Colombia: Gathering the pieces of the pinworm-primate puzzle, International Journal for Parasitology: Parasites and Wildlife 11, pp. 17-28 : 21

3.1.3. Trypanoxyuris kemuimae n. sp. ( Fig. 3 )

Description based on 17 specimens. Buccal aperture delimited by three lips, dorsal and left ventral lip are bilobulated; right ventral lip elongated; lobes in the left ventral lip asymmetrical with upper lobe larger than lower lobe ( Fig. 3 ).

Females (n = 10): Lips show discrete lateral indentations in the upper border. Lateral alae double crested ( Fig. 3 ). Measurements are given in Table 2 .

Males (n = 7). Measurements are given in Table 3. 3.1.3.1. Taxonomic summary . Type-host: A. seniculus (Linneus, 1766) , red howler monkey. Site of infection: Not determined (samples were obtained from faeces).

Type-locality: San Juan del Carare , Santander Department, Colombia (06̊ 43 N, 74̊ 09′W; 150 m. a.s.l.) . Type material: Holotype: CNHE: No 11214, paratypes CNHE: No. 11215. No of individuals: 17/99 (17.2%) of the recovered specimens of Trypanoxyuris belong to this species.

Etymology: The specific epithet derives from the Bora dialect for howler monkey “kemuime ”.

3.1.3.2. Remarks. This species is distinguished from T. seunimii n. sp. and T. kotudoi n. sp. by the absence of notches in the lips; however, it is morphologically similar to T. minutus ( Fig. 4 ), which can be found in mixed infections in red howler monkeys. The main feature to discriminate between these species is the elongated shape of the right ventral lip in T. kemuimae n. sp., rather than a more circular shape of this lip showed by T. minutus ( Fig. 4 ). Caudal structures among males are similar, as well as egg size and shape, making these characters not useful for discriminating among species.

Figures

Fig. 3. Trypanoxyuris keumimae n. sp. (A) Female full body, lateral view. (B) Female cephalic end, apical view. (C) Male cephalic end, apical view, (D) Male full body, lateral view; (E) Male posterior end, lateral view, (F) Male posterior end, ventral view; (G) Female cross section showing lateral alae (H) Egg.

Fig. 4. SEM of buccal structures of females of Trypanoxyuris species found in howler monkeys (A) Trypanoxyuris seunimii n. sp. (B) T. keumimae n. sp. (C) T. kotudoi n. sp. (D) T. minutus from Alouatta seniculus. (E) T. pigrae. (F) T. minutus from Mesoamerican howler monkeys. R: right ventral lip; L: left ventral lip. White arrow pointing at the lateral indentations. Black arrow pointing at the square-shaped edge.