Antarctylus  

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Rev 04/15/2025

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• Female:
  
  Body vermiform, spiral to C-shaped.  
• Labial region rounded, continuous, annulated; anterior lip annule not divided into sectors (SEM).  
• Lateral field with four lines.  
• Phasmids small, near anus.
• Caudalids not described.  
• Tail rather long (2 to 3 body diameters long), conoid, pointed.  
• Stylet and cephalic framework average sized.  
• Dorsal esophageal gland opening about 10 µm from stylet base in the only species known in this genus.  
• Median bulb oval/rounded with average-sized valve.  
• Glands overlapping the intestine; the dorsal gland and one subventral gland overlap dorsally, the second subventral gland overlaps ventrally for a short distance.  Both subventral glands are shorter than the dorsal one. 

• Esophago-intestinal junction a small triangular structure.  

• Two equally developed genital branches.  One or two epiptygma present, inconspicuous.  Vulval flap not described.    

    

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Male:

• Slight secondary sexual dimorphism seen in smaller, anterior end.
• Tail with long hyaline end.  
• Caudal alae described as enveloping tail end, but appear to stop just short of tail tip in original figure.  
• Gubernaculum not described.

[Ref: Fortuner,  (1987).]