Philometra Lethrini on:
[Wikipedia]
[Google]
[Amazon]
''Philometra lethrini'' is a 
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of parasitic
Parasitism is a close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The ent ...
nematode
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (h ...
of fishes, first found off New Caledonia
New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...
in the South Pacific, in the gonad
A gonad, sex gland, or reproductive gland is a Heterocrine gland, mixed gland and sex organ that produces the gametes and sex hormones of an organism. Female reproductive cells are egg cells, and male reproductive cells are sperm. The male gon ...
s of ''Lethrinus genivittatus
''Lethrinus genivittatus'', the longspine emperor, threadfin emperor, lance emperor or lancer, is a species of fish in the genus ''Lethrinus'', and family Lethrinidae. It was first described by Achille Valenciennes in 1830. The IUCN classifies it ...
''. This species is characterized mainly by: length of spicules and length and structure of its gubernaculum
The paired gubernacula (from Ancient Greek κυβερνάω = pilot, steer), also called the caudal genital ligament, are embryonic structures which begin as undifferentiated mesenchyme attaching to the caudal end of the gonads (testicles in m ...
, structure of male caudal end, body size, location in host and types of hosts.
References
Further reading
* * Camallanida Parasitic nematodes of fish Nematodes described in 2008 {{Secernentea-stub