Camacolaimus glauxicola Allgén, 1951a

Holovachov, Oleksandr & Boström, Sven, 2015, Swedish Plectida (Nematoda). Part 10. The genus Deontolaimus de Man, 1880, Zootaxa 4034 (1), pp. 1-44 : 30-31

Camacolaimus glauxicola Allgén, 1951a

( Fig. 15 )

Female. Body slender, weakly fusiform; ventrally curved upon fixation, especially so along tail. Cuticle finely annulated. Lateral field, body pores, epidermal glands and subcephalic, cervical and somatic sensilla cannot be observed. Labial region rounded, continuous with body contour. Inner and outer labial sensilla indistinct. Cephalic sensilla setiform. Amphidial fovea ventrally-unispiral, located just anterior to cephalic sensilla bases. Ocelli absent. Nerve ring and hemizonid indistinct. Secretory-excretory system present, but only excretory pore recognizable—it opens to exterior on ventral side, at around midpharynx. Oral opening terminal. Buccal cavity uniformly tubular: cheilostom barrel-shaped; stegostom tubular, with large dorsal onchiostyle. Onchiostyle with acute tip and subcylindrical body. Pharynx muscular, cylindrical anteriorly, expanding posteriorly; not subdivided into sections; without bulbs; valvular apparatus absent. Pharyngeal glands and cardia indistinct. Reproductive system didelphic, amphidelphic; ovary branches reflexed antidromously. Vagina straight. Epiptygmata, pars refringens vaginae and sensitive structures around vulva indistinct. Rectum short. Tail elongate-conoid, ventrally curved. Caudal glands and spinneret present.

Discussion. Description and illustrations of this species match superficially the diagnosis of the family Camacolaimidae , in particular the genera Deontolaimus and Procamacolaimus in presence of single dorsal onchiostyle and paired female reproductive system ( Allgén 1951a: 356, Fig. 2 ). This species was described from the same exact sample as Camacolaimus papillosus Allgén, 1950 (see below). Besides primary sexual dimorphism, no other differences can be found between the two. Since Camacolaimus papillosus is considered a junior synonym of Deontolaimus papillatus (see below), Camacolaimus glauxicola is also synonimized with D. papillatus .

Figures

FIGURE 2. Deontolaimus tardus (de Man, 1889) comb. n., lectotype female. A – B: Anterior end at different focal planes; C: Excretory canal; D: Vagina; E: Spinneret. Scale bars: A – E = 10 µm.

FIGURE 15. Camacolaimus glauxicola Allgén, 1951 a, lectotype female. A – B: Anterior end at different focal planes; C: Entire female. Scale bars: A – B = 10 µm, D = 50 µm.