Loliolus

Loliolus is a genus of squid from the family Loliginidae from the Indo-Pacific region. The genus is divided into two subgenera Loliolus and Nipponololigo. They are small squids of less than 150mm in mantle length which have an expanded tentacular club. This club has 4 series of suckers. The sucker ringss have plate-like teeth which are square in shape all around them. The males' hectocotylus has a ventral crest which is created by the fusion of the protective membrane with the ventral series of papillae and this crest completely obscures the conical shape of the papillae.[2] The mantle is rounded posteriorly and lacks the posterior tail-like lobe while the fins are positioned on the rear of the mantle and extend to the posterior tip of the mantle.[3] Their eggs are small and the males' spermatophore has a short cement body. They do not possess photophores. The two subgenera are distinguished by the hectocotylus which in Loliolus encompasses the entire arm and there are no unmodified suckers while in Nipponololigo the arm is only partly hectocotylsed and has normal suckers at its base.[2]

Loliolus
Loliolus sumatrensis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Myopsida
Family: Loliginidae
Genus: Loliolus
Steenstrup, 1856[1]
Type species
Loliolus typus
Steenstrup, 1856

Species

The following species are classified as belonging to Loliolus:[1][2]

  • Subgenus Loliolus (Loliolus) Steenstrup, 1856
    • Loliolus affinis Steenstrup, 1856 little Indian squid
    • Loliolus hardwickei (Gray, 1849) Steenstrup’s bay squid
  • Subgenus Loliolus (Nipponololigo) Natsukari, 1983

References
  1. Julian Finn (2016). "Loliolus Steenstrup, 1856". World Register of Marine Species. Flanders Marine Institute. Retrieved 24 February 2018.
  2. P. Jereb; C.F.E. Roper, eds. (2010). Cephalopods of the World an Annotated and Illustrated Catalogue of Cephalopod Species Known to Date Volume 2 Myopsid and Oegopsid Squids (PDF). Food and Agriculture Organization Rome. pp. 72–73. ISBN 978-92-5-106720-8.
  3. Vecchione, Michael; Richard E. Young (2010). "Loliolus Steenstrup, 1856". The Tree of Life Web Project. Retrieved 24 February 2018.
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