Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Chirundina ( Genus )
Chirundina alaskaensis  (Tanaka, 1969)   (F)
Syn.: Wilsonidius alaskaensis Tanaka, 1969 (p.268, figs.F); Bradford & Jillett, 1980 (p.92)
Markhaseva, 1996 (p.130, figs.F)
Species Chirundina alaskaensis - Plate 1 of morphological figuresissued from : O. Tanaka in Publ. Seto Mar. Lab., 1969, XVII (4). [Fig.8]. As Wilsonidius alaskaensis.
Female (from G. of Alaska): a, habitus (lateral left side); b, forehead (dorsal); c, last thoracic segment and urosome (dorsal); d, A1; e, A2; f, Md.

- Cephalothorax slightly less than 3 times longer than abdomen (74 : 26).
- Head and 1st pedigerous segment fused, 4th and 5th pedigers fused (with a line of demarcation between the 4th and 5th thoracic segments along the lateral margins)
- Forehead produced in dorsal view , broadly rounded in lateral view.
- Posterolateral corners of the last thoracic segment narrowly rounded but irregular in outlin9 : 13 : 5 : e at the apex.
- Rostrum 1-pointed and long, directing downwards.
- Abdomen 4-segmented; segments and caudal rami in proportional lengths 45 : 19 : 13 : 5 : 18 = 100.
- Genital segment symmetrical, dilated posteriorly, swollen considerably ventrally.
- 2nd and 3rd abdominal segments fringed with fine spinules on distal margin.
- Caudal rami as lonf as wide, with a small lateral spine, 4 long setae and 1 appendicular seta.
- A1 24-segmented, extending to the end of the 2nd abdominal segment.
- A2 with exopod 7-segmented , about1.5 times as long as the endopod; 1st exopodal segment furnished with a small seta on the inner distal margin; 2nd segment with 2 small setae on the inner proximal margin and 1 small spine at the inner distal margin; 3rd to 6th segments furnished with 1 long seta respectively, 7th segment with 3 terminal and 1 inner marginal setae; distal endopodal segment with 8 setae on the inner lobe and 7 setae on rhe outer lobe.
- Md palp elongate, furnished with 3 inner marginal setae; exopod 5-segmented with 6 setae in all; 1st endopodal segment with 2 marginal setae, distal segment with 10 setae; Cutting blade with 8 teeth and an inner marginal seta.

Species Chirundina alaskaensis - Plate 2 of morphological figuresissued from : O. Tanaka in Publ. Seto Mar. Lab., 1969, XVII (4). [Fig.9]. As Wilsonidius alaskaensis.
Female: a, Mx1; b, Mx2; c, Mxp; d, P1; e, P2; f, P4.9 setae

Nota: Mx1 with 9 setae on outer lobe; 11 setae on exopod; 6+5+4 setae on the 3rd to 1st endopodal segments; 5 setae on the basal segment; 4 setae on the 3rd inner lobe; 5 setae on the 2nd inner lobe; 14 setae on the 1st inner lobe (= arthrite).
- Mx2 with the 1st basal segment swollen on the proximal outer margin; 1st to 5th inner lobes (= endites) furnished with 3 setae respectively; endopod with 6 setae.
- Mxp with the 2nd basal segment 2 times as long as the 1st basal segment, striated with a lamellous plate along the outer margin; endopod with short segments and furnished with 4 , 3, 3, 3+1 and 3+1 setae on the 1st to 5th segments.
- P1 exopod 3-segmented and endopod 1-segmented

Species Chirundina alaskaensis - Plate 3 of morphological figuresChirubdina alaskaensis/em> female:
1 - Crest on cephalon absent.

Species Chirundina alaskaensis - Plate 4 of morphological figuresissued from : O. Tanaka in Publ. Seto Mar. Lab., 1969, XVII (4). [p.268]. As Wilsonidius alaskaensis.
Female A1.

Compl. Ref.:
Galbraith, 2009 (pers. comm.)
NZ: 1

Distribution map of Chirundina alaskaensis by geographical zones
SE Gulf of Alaska (coastal), Vancouver Is.

Type locality: 55°35'N, 132°33'W.
N: 2
(105) F: 3,7; {F: 3,70}
Rem.: Mesopelagic.
Last update : 28/03/2017
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed February 28, 2021]

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