page_title: Peniculus hokutae
hierarchical_section_title: Peniculus hokutae
caption_attribution_description: English: Figure 2 of paper Peniculus hokutoae Ohtsuka, Nishikawa &amp; Boxshall, 2018, holotype female. (A) Habitus, dorsal view, posterior part twisted, tergites on third and fourth pedigerous somites arrowed; (B) Cephalothorax, dorsal view; (C) Cephalothorax, lateral view; (D) Caudal ramus; (E) Antenna; (F) Terminal segment of antenna; (G) Mandible; (H) Maxillule; (I) Maxilla; (J) Leg 1, anterior view; (K) Leg 2, anterodistal view; (L) Leg 3, anterior view; (M) Leg 4, anterior view. Arrows in (J) to (L) indicate bases of rami.
context_page_description: Peniculus hokutae is a species of parasitic pennellid copepod. It has been described in 2018, from a single female. The type-host is the myctophid fish Symbolophorus evermanni and the type-locality is off Japan. The Japanese name of this species is hokuto-kozutsu-hijikimushi.
  According to Ohtsuka, Nishikawa & Boxshall, this species is the first record of parasitism by the genus Peniculus on a mesopelagic myctophid fish.
  The species was distinguished from other congeners by the presence of a conical process anterior to the rostrum; the secondary elongation of the first pedigerous somite; the incorporation of the third and fourth pedigerous somites into the trunk; the unilobate maxillule bearing two unequal apical setae; the lack of any processes on the first segment of the maxilla.
context_section_description: Peniculus hokutae is a species of parasitic pennellid copepod. It has been described in 2018, from a single female. The type-host is the myctophid fish Symbolophorus evermanni and the type-locality is off Japan. The Japanese name of this species is hokuto-kozutsu-hijikimushi.
  According to Ohtsuka, Nishikawa & Boxshall,  this species is the first record of parasitism by the genus Peniculus on a mesopelagic myctophid fish. 
  The species was distinguished from other congeners by (1) the presence of a conical process anterior to the rostrum; (2) the secondary elongation of the first pedigerous somite; (3) the incorporation of the third and fourth pedigerous somites into the trunk; (4) the unilobate maxillule bearing two unequal apical setae; (5) the lack of any processes on the first segment of the maxilla.
caption: Line drawings of Peniculus hokutae
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