Deladenus cocophilus n. sp. (Nematoda: Hexatylina): A Mycetophagous and Entomoparasitic Nematode in Infested Coconut Fruits from Balochistan, Pakistan
AbstractDeladenus cocophilus n. sp. was isolated from infested coconut fruits in Winder, Balochistan, Pakistan. Descriptions are givenof the entomophagous (insect-parasitic females) and mycetophagous (fungus-feeding) free-living females, males, and juveniles. The newspecies D. cocophilus resembles those species in which the excretory pore is situated anterior to the hemizonid, namely, D. apopkaetusChitambar, 1991; D. leptosoma Gagarin, 2001; D. ipini Massey, 1974; D. laricis (Blinova and Korentchenko, 1986) Ebsarry, 1991; D. (siricidicola)canii Bedding, 1974; D. (s) imperialis Bedding, 1974; D. nevexii Bedding, 1974; D. (wilsoni) proximus Bedding, 1974; D. (s) rudyi Bedding,1974; D. (s) siricidicola Bedding, 1968; D. (wilsoni) wilsoni Bedding, 1968 and D. minimus Chizhov and Sturhan, 1998. The new speciesdiffers fromD. ipini in the absence of a post uterine sac vs. present; a = 17 to 30 vs. 35 to 40; stylet = 8 to 10 vs. 11 to 12 mmand vulva-anus =21 to 28 vs. 35 to 48 mm. FromD. apopkaetus it differs in tail length in female 22 to 28 vs. 31 to 43 mmand in themale it is 24 to 32 vs. 30 to46 mm. It differs from D. leptosoma in the c ratio in females, c = 21 to 37 vs. 16 to 22, presence of 6 lines in lateral field vs. 10 lines andslightly longer spicules 16 to 18 vs. 15 to 16 mm. FromD. laricis it differs in a shorter stylet length 8 to 10 vs. 11 to 12 mm; in the c ratio inmales 16 to 22 vs. 22 to 35 and hemizonid from anterior end 76 to 90 vs. 90 to 119 mm. It also differs from the following species:D. (siricidicola) canii; D. (s) imperialis; D. nevexii; D. (wilsoni) proximus; D. (s) rudyi; D. (s) siricidicola; D. (wilsoni) wilsoni and D. minimus inhaving shorter tail length, lower values of a,b,c ratios and a slightly anteriorly located vulva in females.
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