Caligus schelegeli Ho & Lin, 2003

Boxshall, Geoff A & El-Rashidy, Hoda H., 2009, A review of the Caligus productus species group, with the description of a new species, new synonymies and supplementary descriptions, Zootaxa 2271, pp. 1-26 : 19-20

Caligus schelegeli Ho & Lin, 2003

Syn: C. pagrosomi schelegeli Ho & Lin, 2003

Differential diagnosis: Female genital complex and abdomen combined about 1.6 times longer than cephalothorax; body length 3.10–3.88 mm. Male body length 2.28–2.84 mm. Female genital complex longer than wide, lacking distinct postero-lateral lobes: abdomen 2-segmented, first segment about 2.0 times longer than second. Male abdomen 2-segmented; second segment about 1.6 times longer than first. Female antenna with distal claw weakly curved. Post-antennal process curved in both sexes. Additional process present between post-antennal process and base of antenna in female. Posterior process of maxillule with tiny blunt accessory process in male. Sternal furca of female with incurved tines and with small rounded processes on body surface either side of furca. Female maxilliped with smooth myxal margin. Male maxilliped with large, acutely-pointed process on myxal margin, opposing tip of claw. Exopod of leg 1 with seta at inner distal angle shorter than segment but longer than longest of distal spines; posterior margin with single, naked vestigial seta. Outer margin of second endopodal segment of leg 2 ornamented with typical setules. Leg 4 with robust first exopodal segment bearing marginal setule, spine extending beyond base of proximal outer spine of second segment; second segment with distal spines well developed, increasing slightly in length from outer to inner.

Material examined: none

Distribution: Taiwan.

Hosts: Carangidae : Megalaspis cordyla (Linnaeus, 1758) ;

Mugilidae : Mugil cephalus Linnaeus, 1758 ;

Scatophagidae : Scatophagus argus (Linnaeus, 1766) ;

Siganidae : Siganus fuscescens (Houttuyn, 1782) ;

Sparidae : Acanthopagrus schlegelii (Bleeker, 1854) ;

Terapontidae : Terapon jarbua (Forsskål, 1775) .

Host data from Ho & Lin (2003).

Remarks: C. schelegeli is closely related to C. haemulonis but differs in having a genital complex plus abdomen that, combined, are about 1.6 times longer than the cephalothorax, rather than 1.3 times longer as in C. haemulonis .