First record of Gryllophila skrjabini Sergiev, 1923 and Cephalobellus magalhaesi Schwenk, 1926 (Nematoda: Thelastomatidae) parasites of Neocurtilla claraziana Saussure, 1874 (Orthoptera: Gryllotalpidae) in Argentina Author Rusconi, José Matias Author Achinelly, Maria Fernanda Author Camino, Nora Beatriz text Papéis Avulsos de Zoologia 2017 São Paulo 2017-12-20 57 37 473 480 http://dx.doi.org/10.11606/0031-1049.2017.57.37 journal article 10.11606/0031-1049.2017.57.37 1807-0205 5757345 Cephalobellus magalhaesi (Schwenk, 1926) Description Morphology Female: 5.5 to 6.4 mm long by 270 to 315 µm wide. Cuticle transversely striated up to the level of the oesophagus ( Figs. 2B and C ). Lips not salient. Buccal cavity about 7 µm deep. Oesophagus 569 µm long, consisting of an anterior cylindrical corpus, 432 µm long by 46 µm wide; an isthmus 36 µm long; and a posterior valvular bulb 102 µm in diameter. Intestine dilated anteriorly to form a cardia. Nerve ring 261 µm from the anterior end of body. Excretory pore posterior to base of oesophagus, 774 µm from the anterior extremity. Anus 270 µm from posterior end of body; tail short, attenuated conical ( Fig. 2F ). Vulva just behind the middle of body ( Fig. 2D ). Ovaries lying in the opposite direction to their corresponding uteri and reflexed near their terminations; uteri divergent. Eggs ellipsoidal, almost spherical ( Fig. 2E ), 57 µm long by 42 µm wide. FIGURE 2: Cephalobellus magalhaesi . (A) Female, entire. (B) Cephalic region (SEM). (C) Cephalic region. (D) Vulva, lateral view. (E) Eggs. (F) Tail (SEM). Morphometry Female (n = 130): total length = 5862 ± 413.08 (5520-6456), cephalic diameter = 22.5 ± 5.19 (18-27), distance from anterior end to nerve ring = 261.4 ± 12.7 (252-270), width at level of nerve ring = 126 ± 12.7 (108-135), oesophagus length = 569.2 ± 11.3 (333-639), anterior distance to basal bulb = 469.3 ± 11.3 (458-485), distance from anterior end to excretory pore = 774 ± 7 (767-781), greatest width = 292.5 ± 21.4 (270-315), width at level of vulva = 272.2 ± 4.5 (270-279), vulval length = 29.2 ± 4.5 (27-36), vulval width = 11.2 ± 4.5 (9-18), V = 50.8% ± 3.4 (46.5%-55%), posterior end width = 195.7 ± 13.5 (189-216), tail length = 270 ± 5.7 (263-277), egg length = 57 ± 6.3 (54-63), egg width = 42 ± 6.3 (36-45). TABLE 1: Host range and isolation site of Gryllophila spp. from mole crickets ( Adamson & van Waerebeke, 1992 ).

Nematode species	Author	Hosts	Location
G basiri	Parveen & Jairajpuri, 1981	Gryllotalpa africana	India
G cephalolobulata	Camino & Maiztegui, 2002	Neocurtilla claraziana	Argentina
G gryllotalpae	Farooqui, 1970	G africana	India
G nihali	Rizvi et al., 2002	G africana	India
Gryllophila skrjabini	Sergiev, 1923	Gryllotalpa sp.	India
G africana	Madagascar; India
G europaeus	Spain
G gryllotalpa	Germany
G hexadactyla	Brazil
G septemdecimochromosomica	France
G vulgaris	Kazakhstan

Male: not found. Host: nymphs and adults of the mole cricket Neocurtilla claraziana Saussure, 1874 . Locality: Gorina ( 34°54’29”S ; 58°02’25”W ) Site of infection: hindgut (last part of intestine). Prevalence: 33%.