Pseudohaplogonaria cerasina, Hooge, Matthew D., Smith, Julian P. S. & Iii, 2004
publication ID |
https://doi.org/ 10.5281/zenodo.157611 |
publication LSID |
lsid:zoobank.org:pub:1A67AA04-C118-4293-84C0-9B00928A2203 |
DOI |
https://doi.org/10.5281/zenodo.6273412 |
persistent identifier |
https://treatment.plazi.org/id/03CE390F-5612-FF80-FEC3-CABE326932CD |
treatment provided by |
Plazi |
scientific name |
Pseudohaplogonaria cerasina |
status |
sp. nov. |
Pseudohaplogonaria cerasina sp. nov. ( Figs. 11–12 View FIGURE 11 View FIGURE 12 )
Type Material: Syntypes. AMNH PLATY 1653 and AMNH PLATY 1654, two sets of 1.5µmthick serial oblique longitudinal sections of epoxyembedded specimens stained with toluidine blue, collected October 2002.
Type Locality. Oak Island, NC, from shallow subtidal coarse to medium grained sand inside Lockwoods Folly Inlet (33° 54' 53"N, 78° 14' 06"W).
Other Material Examined. Living specimens in squeeze preparations; one whole mount for fluorescence imaging of musculature.
Etymology. Species name is from the Latin cerasinus, cherrycolored, and refers to the bright red rhabdoids in this species.
Description. Mature specimens approximately 650 µm long and 100 µm wide ( Figs. 11 View FIGURE 11 , 12 View FIGURE 12 A). Body cylindrical. Anterior and posterior ends rounded. Uncolored body by transmittted light.
Epidermis completely ciliated. Many bright red as well as uncolored rhabdoids present in body wall; mostly concentrated on ventral side ( Fig. 11 View FIGURE 11 , 12 View FIGURE 12 C).
Musculature with circular muscles that encircle the body along entire length of animal; straight longitudinal muscles present between frontal organ and anterior edge of mouth; longitudinal muscles with a longitudinal orientation anteriorly but then bend medially to cross diagonally over the body (longitudinalcrossover fibers) present in both dorsal and ventral body wall; anterior end with ventral diagonal muscles positioned between outer circular and inner longitudinal muscles (data not shown).
Frontal organ well developed; cell bodies of frontal glands positioned ~250 µm behind frontal pore ( Fig. 11 View FIGURE 11 A, B).
Mouth opening on ventral surface, middle of body. Digestive central syncytium extends nearly entire length of body.
Ovary unpaired, ventral; extends from mouth posteriorly to bursal nozzle ( Fig. 11 View FIGURE 11 B).
Testes paired, dorsal, compact; separate from ovary. Testes extend anteriorly to position ~220 µm behind anterior tip and posteriorly to male copulatory organ.
Female gonopore and vagina absent. Seminal bursa leads to robust bursal nozzle ~30 µm in length ( Figs. 11 View FIGURE 11 B, C, 12B, D).
Male gonopore ventral, at posterior end; leads to nonmuscular penis composed of spongy tissue with large nuclei ( Figs. 11 View FIGURE 11 C, 12B, D). Large masses of sperm present at lateral sides of penis; true seminal vesicle absent.
Remarks. Among species in the family Haploposthiidae , members of the genus Pseudohaplogonaria are united in having a seminal bursa with a sclerotized bursal nozzle, and a weakly developed or absent seminal vesicle. P. cerasina is most similar to P. minima (Ehlers & Dörjes, 1979) , which also has paired testes, an unpaired ovary, conspicuous rhabdoids, and a bursal nozzle. P. minima , however, is more stoutbodied than P. cerasina , has a smaller male copulatory organ, and a common gonopore that opens to the seminal bursa via a short vagina.
AMNH |
American Museum of Natural History |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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