Kalliapseudes gutui, Drumm & Heard, 2011

DRUMM, DAVID T. & HEARD, RICHARD W., 2011, Systematic revision of the family Kalliapseudidae (Crustacea: Tanaidacea), Zootaxa 3142 (1), pp. 1-172 : 102-107

publication ID	https://doi.org/ 10.11646/zootaxa.3142.1.1
DOI	https://doi.org/10.5281/zenodo.5461041
persistent identifier	https://treatment.plazi.org/id/AF5F87C3-DE0E-FF9D-B19F-C0E3FC1B94F4
treatment provided by	Felipe
scientific name	Kalliapseudes gutui
status	sp. nov.

Treatment

Kalliapseudes gutui View in CoL n. sp.

( Figs 65–68 View FIGURE 65 View FIGURE 66 View FIGURE 67 View FIGURE 68 )

Material examined. Holotype, adult male ( ZMUC CRU –20384), Central Indo–Pacific , Coral Sea, Eastern Australia, 29°57'S, 153°24'E, muddy sand, 75 m, coll. Nov. 11, 1951, van Veen grab, Galathea. GoogleMaps

Diagnosis (male). Rostrum square, broader than long. Pleotelson with two terminal short simple setae, other posterior setae lacking and with bifid tip. Antennule with accessory flagellum of three articles, proximal articles of main flagellum with several aesthetascs decreasing in number distally, and first peduncle article lacking ventral spiniform setae. Antenna third peduncle article with two plumose setae on inner margin; flagellum with six articles, first three with several pectinate setae on outer margin. Labrum lacking cusps. Terminal spiniform seta of mandibular palp approximately ten times as long as broad. Cutting edge of cheliped fixed finger with proximal tooth, approximately two times as long as broad. Cheliped and pereopod 1 exopodite with two plumose setae. Pereopod 5 propodus without short bipinnate setae on inner and outer surfaces. Pereopod 6 dactylus with one subterminal seta. Uropod article with three articles, last article approximately 1.8 times as long as second article.

Etymology. Named after Dr. Modest Guţu in recognition of his contribution to the knowledge of the Tanaidacea .

Description. Adult male. Body ( Fig. 65A View FIGURE 65 ): length approximately 5 mm, 4.9 times as long as broad.

Carapace ( Fig. 65A View FIGURE 65 ). Broader than long, one pair of mid–lateral setae and one pair of shorter dorsal setae; rostrum square, broader than long.

Pereonites ( Fig. 65A View FIGURE 65 ). Pereonites 3–5 longer than 1, 2, and 6 and pereonite 6 shorter than the others, all rounded laterally; at least one pair of anterolateral and dorsal setae; hyposphaenia present on all pereonites.

Pleon ( Fig. 65A View FIGURE 65 ). Pleonites subequal; rounded epimera, with several plumose setae (only bases illustrated) and two pairs of simple setae on dorsal surface; hyposphaenia present on all pleonites. Pleotelson more than ½ length of combined length of pleonites 1—5, rounded, narrowing posteriorly to slightly indented tip, with several lateral setae and dorsal setae and two terminal short simple setae.

Antennule ( Fig. 65B View FIGURE 65 ). First peduncle article approximately 2.5 times as long as second and third articles combined and approximately 2.6 times as long as maximum width, with some simple setae on inner margin and several simple and broom setae on outer margin. Second peduncle article approximately 3.5 times shorter than first article, with several simple and broom setae. Third and fourth peduncle articles subequal. Outer flagellum shorter than peduncle, with 10 articles, the proximal articles with several ventral aesthetascs decreasing in number distally. Inner flagellum with three articles, last article with three terminal simple setae.

Antenna ( Fig. 65C View FIGURE 65 ). First peduncle article with medial extension bearing four plumose setae. Second peduncle article naked and the squama with five long simple setae. Third peduncle article with two plumose setae on inner margin. Peduncle article 4 (last) shorter than flagellum, with double row of plumose setae. Flagellum with six articles, first three articles with several pectinate setae and one or two plumose setae, distal article with four terminal simple setae and one plumose seta.

Labrum not examined.

Mandibles ( Figs. 65D, E View FIGURE 65 ). Left mandible ( Fig. 65D View FIGURE 65 ): incisor process with eight teeth; lacinia mobilis with six teeth; spine row with five spiniform setae. Right mandible: spine row with five spiniform setae (incisor process destroyed). Palp ( Fig. 65E View FIGURE 65 ) with terminal spiniform seta, approximately ten times as long as broad.

Labium ( Fig. 65F View FIGURE 65 ). Palp with long hair–like seae on margins; ending in short acuminate inner tip.

Maxillule ( Fig. 66A View FIGURE 66 ). Inner endite bearing four terminally setulate setae and dense rows of hair–like setae on outer and inner margins. Outer endite with 12 long and one short spiniform setae, two subterminal setae and dense rows of hair–like setae on outer and inner margins.

Maxilla ( Fig. 66B View FIGURE 66 ). Inner lobe of fixed endite with posterior row of three serrate setae and with long anterior row of setae (~ 32). Outer lobe of fixed endite with four distal serrate and several simple and bippinate setae. Inner lobe of moveable endite with several simple and pectinate setae. Outer lobe of moveable endite with three pectinate and two plumodenticulate (bearing proximal setules and distal denticles). Inner margin spinulate.

Maxilliped ( Figs. 66C, D View FIGURE 66 ). Basal article fringed with plumose setae on outer margin, inner margin naked. First article of palp with two simple setae on inner margin and one short simple setae on outer margin. Last three articles of palp with double row of long plumose setae on inner margin; second article with two simple setae on outer distal corner. Endite ( Fig. 66D View FIGURE 66 ) with 10 pappose setae along margin and one long simple and several pappose distal setae; two coupling hooks.

Cheliped ( Figs. 66E–G View FIGURE 66 ). Basis small with one midventral spiniform seta and one long and two short simple setae. Merus as long as broad, with three distal simple setae (one long and two short) on ventrodistal corner and one short simple seta on ventral margin. Carpus approximately 2.2 times as long as broad, with double row of long, plumose setae ventrally and several short simple setae on dorsal margin and dorsodistal corner. Propodus robust with diagonal row of long, plumose setae on inner face; fixed finger with several simple setae just proximal to distal spine; cutting edge with one proximal tooth and several short spinules and simple setae between the tooth and distal unguis; palm with several simple setae and middistal tooth. Dactylus with four simple setae on outer surface and with three simple setae midway on inner surface; cutting edge with several setae increasing in length distally and one small proximal tooth; unguis present. Exopodite with two long plumose setae.

Pereopod 1. Absent (broken off).

Pereopod 2 ( Figs. 67A, B View FIGURE 67 ). Basis approximately three times as long as broad, with several short simple setae on ventral and dorsal margin, two broom setae on dorsal margin (one broken off), and one long simple seta on outer ventral surface. Ischium with two simple setae on ventrodistal corner (one long and one short). Merus approximately same length as carpus, with one spiniform seta on ventrodistal corner and two distal simple setae. Carpus approximately 1.4 times as long as broad, with several distal simple setae, three serrate spiniform setae on ventral setae, and two spiniform setae on outer surface. Dactylus shorter than basis, approximately as long as carpus and propodus combined; sensory organ present near base, with seven sensory setae; unguis fused with dactylus.

Pereopod 3 ( Fig. 67C View FIGURE 67 ). Similar to pereopod 2. Carpus with four serrate spiniform setae on ventral margin, and four serrate spiniform setae on distal outer surface. Propodus with five ventral serrate spiniform setae.

Pereopod 4 ( Figs. 67D, E View FIGURE 67 ). Basis approximately 2.1 times as long as broad, with two short ventrodistal simple ventrodistally. Carpus with seven spiniform setae on outer surface and six spiniform setae on inner surface. Propodus with seven serrate spiniform setae on outer surface, six serrate spiniform setae on inner surface, one terminal serrate spiniform seta, four short bipinnate setae on outer surface and three on inner surface, and one proximal broom seta on dorsal margin. Dactylus shorter than propodus, with a tuft of approximately five sensory setae; unguis absent.

Pereopod 5 ( Figs. 67F, G View FIGURE 67 ). Similar to pereopod 4. Propodus with seven serrate spiniform setae on inner surface. Bipinnate setae on outer and inner surfaces lacking. Dactylus with four sensory setae.

Pereopod 6 ( Fig. 68A View FIGURE 68 ). Basis slender, approximately 4.6 times as long as broad, with five plumose setae on dorsal margin, three plumose and three simple setae on ventral margin. Ischium with three simple setae on ventral margin. Merus as long as ischium, with two plumose setae on dorsal margin and three simple setae on ventral margin. Carpus approximately 2.3 times as long as merus, with seven simple setae on ventral margin, one plumose and three simple setae on dorsal margin, and two simple setae distally on outer surface. Propodus shorter than the carpus, with four spiniform setae on ventral margin and 22 short bipinnate setae. Dactylus longer than carpus and propodus combined, with one subdistal seta; unguis absent.

Pleopods ( Fig. 68B View FIGURE 68 ). Basal article with three long plumose setae. Exopodite with 17 plumose setae and endopodite with 18–19 plumose setae.

Uropods ( Fig. 68C View FIGURE 68 ). Basal article with several distal simple setae. Exopodite with three articles, distal article longest, approximately 1.8 times as long as second article, with three simple setae. Endopodite multiarticulated (exact number difficult to determine due to incomplete fusion in some articles).

Female. unknown.

Wales, Eastern Australia [ K. obtusifrons ( Haswell, 1882) , and K. longisetosus Drumm, 2007 being the other species]. Kalliapseudes gutui n. sp. can be distinguished from K. longisetosus by lacking the long simple setae on the basis of pereopods 2 and 3 and not having as many setae on the posterior region of the pleotelson. Kalliapseudes gutui n. sp. can be distinguished from K. obtusifrons by having the antennule with inner flagellum having three articles (four in obtusifrons ), the terminal spiniform seta of the mandibular palp being naked (pectinate in obtusifrons ), and the pereopod 6 dactylus with one subterminal seta (two in obtusifrons ). Kalliapseudes gutui n. sp. can be further distinguished by having a quadrate rostrum. The only other species of Kalliapseudes with a quadrate rostrum is Kalliapseudes quadrirobustirostris n. sp. from Queensland, northeastern Australia but is more pronounced than that of Kalliapseudes gutui n. sp. (see the “remarks” section under the description of Kalliapseudes quadrirobustirostris n. sp. for additional differences between these two species).