Trischizostoma richeri (Freire, Pablo R. & Serejo, Cristiana S. 2004)
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Ordo: Amphipoda
Familia: Lysianassidae
Genus: Trischizostoma
Name
Trischizostoma richeri Lowry & Stoddart, 1994 – Wikispecies link – Pensoft Profile
- Trischizostoma richeri Freire, Pablo R., 2004, Zootaxa 645: 10-12.
Materials Examined
Material examined. REVIZEE Program, N. O. Thalassa col., stn. E0510, 15 º 48.503 ' S, 038º 36.265 ' W to 15 º 47.383 ' S, 038º 36.154 ' W, 599 m, 12 / 06/ 2000; 1 female with oostegites, 61 mm, MNRJ15138. Type locality. Southwest Pacific Ocean, Loyalty Islands Basin, 21 º 12.05 ' S, 166 º 59.85 ' E, 2190 to 2205 m.
Diagnosis
Diagnosis. Eyes well developed. Maxilliped palp longer than outer plate. Gnathopod 1 propodus oval; palm with 19 short robust setae and 3 pairs of long robust setae distally. Coxa 2 with anterior margin rounded. Gnathopod 2 carpus longer than ischium. Pereopod 3 basis 3 X of propodus length. Telson entire, subacute.
Description
Description. Female, 61 mm (Fig. 5 A). Rostrum reaching end of article 1 of peduncle of antenna 1. Eyes well developed. Antenna 1, article 1 of peduncle slightly longer than articles 2–3; callynophore present. Antenna 2, article 4 of peduncle slightly shorter than article 5. Mandibles with distal incisors; palp 3 articulate with lateral setae. Maxilla 1, inner plate 1 / 3 length of outer plate; outer plate with 8 distal setae. Maxilla 2, inner and outer plates subequal in length; outer plate with 5 lateral setae. Maxilliped, inner plate shorter than outer plate; palp with 4 articles and longer than outer plate.
Description
Uropods 1 and 2, peduncle subequal to outer ramus; inner ramus slightly longer than outer ramus. Uropod 3, peduncle slightly shorter than half of outer ramus; inner and outer rami subequal in length; outer ramus 2 articulate, with basal article 5 X length of distal article. Telson entire, subacute (Fig. 4 E).
Distribution
Distribution. Southwest Pacific Ocean, Loyalty Islands Basin; Southwest Atlantic Ocean, off Brazilian coast (15 º S).
Discussion
Remarks.Trischizostoma richeri was recently described and compared with other species of the genus (Lowry & Stoddart, 1994). The Brazilian sample agrees with the type material in the diagnostic characters such as carpus of gnathopod 2 longer than ischium, basis of pereopod 3 3 X the propodus length and telson entire, subacute.
Taxon Treatment
- Freire, Pablo R.; Serejo, Cristiana S.; 2004: The genus Trischizostoma (Crustacea: Amphipoda: Trischizostomidae) from the Southwest Atlantic, collected by the REVIZEE Program, Zootaxa 645: 10-12. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
