Torquella galatheae Błażewicz-Paszkowycz 2007, n. sp.
Creators: name: Błażewicz-Paszkowycz, Magdalena
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Typhlotanaidae
Torquella
Torquella galatheae

description: Torquella galatheae n. sp.   (Figs 46–47)  
 Material examined: Holotype: female, (CRU ###), partially dissected on slides, Galathea Station 716, 9°23'N, 89°32'W, depth 3570 m, herring otter trawl, bottom dark, muddy clay, bottom temp.: c. 1.9°C, 6 May 1952.   
 Diagnosis: Carapace 1.2 times as long as wide. Pereonite-2 1.5 times as long as pereonite-1; pereonites 3 and 5 1.4 times as long as wide. Chela three times as long as wide. Antennule article-3 less than three times as long as article-2. Pereopod-1 merus and carpus shorter than basis, merus with two short setae; pereopod-2 propodus with two long setae dorsally, merus with one spiniform and one simple seta, carpus with three spiniform and two short simple setae; pereopods 4–5 propodus distal seta reaches end of unguis; pereopods 4–6 with numerous spines around prickly tubercles; pereopod-6 propodus with distal setae subequal; uropod rami two-articled, exopod 0.8 times length of endopod.   
 Etymology: The name is given after the research vessel r/v Galathea from which the species was collected.   
 Description: Female. Body length 3.7 mm (Fig. 46A), almost ten times as long as wide; carapace smooth, 15% of body length, 1.3 times as long as wide, slightly narrowing rostrally, rounded laterally, rostrum acute. Pereonite-1 twice as wide as long, antero-lateral corners expanded forward; pereonite-2 little wider than long, 1.5 times as long as pereonite-1; pereonites 3–5 subequal, 1.4 times as long as wide; pereonite-6 1.5 as wide as long. Pleon 15% of body length, pleonites 1–5 similar in size; pleotelson semi-rectangular.   
Antennule (Fig. 46B): Article-1 over three times as long as wide, with three groups of pinnate and simple setae; article-2 with two simple and one pinnate setae distally; article-3 over twice as long as article-2, with five simple and one pinnate setae distally.  
Antenna (Fig. 46C): Article-2 little longer than article-3; article-3 with one seta; article-4 is 2.2 times as long as article-5, with two simple and two pinnate setae distally; article-5 with one simple seta distally; article-6 very short, with five terminal setae.  
 Mouth parts: Labrum (Fig. 46D) hood-shaped with numerous small setae. Mandible (Fig. 46E,F) stout; incisor with row of teeth on upper margin; molar process well-developed, edges supported with teeth-like structures, lower edge with spines; lacinia mobilis well-developed, crenulated. Maxillule (Fig. 46G) endite with eight apical spiniform setae. Maxilla (Fig. 46H) oval, naked. Maxilliped (Fig. 46J) bases fused, bilobed, with simple setae reaching over half length of endites; endite with two setae and two tubercles on distal margin; palp four-articled: article-1 naked; article-2 wedge-shaped, with three setae on inner margin and one short seta on outer margin; article-3 with three serrated setae and one simple setae on inner margin; article-4 with one serrated seta on outer margin and five terminal setae. Labium (Fig. 46I) bilobed; outer corner of inner lobe and outer lobe with minute setae.   
Cheliped (Fig. 47A): Basis twice as long as wide; merus wedge-shaped with one seta ventrally; carpus about 2.8 times as long as broad, with one dorsal seta and with two long setae ventrally; propodus and fixed finger as long as carpus, about three times as long as wide, with one long setae near insertion of dactylus; fixed finger with three setae on inner margin and with two simple setae on ventral margin.  
Pereopod-1 (Fig. 47B): Of walking type; coxa present; basis a little longer than merus and carpus combined, with three setae on dorsal margin; ischium with one seta; merus as long as carpus, with one spiniform and one simple seta distally; carpus with one spiniform, two simple, one pinnate setae distally and one small spiniform setae subventrally; propodus 1.3 times as long as carpus with one seta ventrally and three setae dorsally; dactylus and unguis combined 0.75 times length of propodus.  
Pereopod-2 (Fig. 47C): Of walking type; coxa present; basis with three setae dorsally, shorter than ischium, merus and carpus combined; merus a little shorter than carpus, with one simple and one spiniform setae distally; carpus with three spiniform setae and two simple setae distally; propodus a little longer than merus and carpus combined, with spiniform seta ventrally and two long setae (reaching end of unguis) dorsally; dactylus shorter than half of unguis.  
Pereopod-3 (Fig. 47D): Similar to pereopod-2, but carpus with four spiniform setae.  
Pereopod-4 (Fig. 47E): Clinging type; coxa absent; basis with one simple seta dorsally and one pinnate seta ventrally; ischium with two setae ventrally; merus with two spiniform setae and microtrichiae on ventral margin; carpus with two spiniform setae and prickly tubercles surrounded by dense spines; propodus five times as long as wide, with two spiniform ventro-distal setae and with distal setae reaching the end of unguis; dactylus and unguis combined as long as two-thirds of propodus; unguis distally simple with row spines on ventral margin.  
Pereopod-5 (Fig. 47F): Similar to pereopod-4.  
Pereopod-6 (Fig. 47G): Similar to pereopod-4, but propodus with three subequal setae distally.  
Pleopods 1-5 (Fig. 47H): Endopod with 25 plumose setae on outer margin; exopod with 16 setae on outer margin and one seta on inner margin.  
Uropod (Fig. 47I): Endopod two-articled; proximal and distal article subequal; proximal with one seta distally, distal article with five simple and two pinnate terminal setae. Exopod with two articles; distal article 1.7 times as long as proximal article, tipped by long and short simple seta.  
 Distribution. Species known only from the type locality: Acapulco-Panama: 9°23'N, 89°32'W, at a depth of 3570 m.   
 Remarks: From most of its congeners T. galatheae n. sp. can be distinguished by having pereonites 3–5 longer than wide. This character is shared with T. elegans, but T. elegans lacks the spiniform setae on the merus of pereopods 2 and 3 that are present in T. galatheae.
description: Published as part of Błażewicz-Paszkowycz, Magdalena, 2007, Figure 6. Typhlotanais Compactus, Female A In Family Nototanaidae Sieg, 1976 And Typhlotanaidae Sieg, 1984, pp. 1-141 in Zootaxa 1598 on pages 83-86, DOI: 10.5281/zenodo.178692