Kalliapseudes dongarae, Drumm & Heard, 2011

DRUMM, DAVID T. & HEARD, RICHARD W., 2011, Systematic revision of the family Kalliapseudidae (Crustacea: Tanaidacea), Zootaxa 3142 (1), pp. 1-172 : 95-101

publication ID	https://doi.org/ 10.11646/zootaxa.3142.1.1
persistent identifier	https://treatment.plazi.org/id/AF5F87C3-DE35-FF93-B19F-C44BFC3F92A3
treatment provided by	Felipe
scientific name	Kalliapseudes dongarae
status	sp. nov.

Treatment

Kalliapseudes dongarae View in CoL n. sp.

(Figs 60–64)

Material examined. Holotype, female with oostegites ( MV J15688 View Materials ); allotype, adult male ( NMV J61793 View Materials ); paratypes: 5 females with oostegites (1 dissected), 1 ovigerous female, 1 adult male (partly dissected) and 6 juveniles ( NMV J61794 View Materials ), Cliff Head, 30 km off Dongara, Indian Ocean, SW Australia, 29°32'S, 114°59'E; paratypes: 2 adult males, 1 juvenile ( MV J15687 View Materials ), Cliff Head, 30 km off Dongara, Indian Ocean, SW Australia, 29°32'S, 114°59'E; paratypes: 1 adult female, 1 adult male ( MV J15690 View Materials ), North Lumps , 2 km off Mullaloo, Indian Ocean, SW Australia, 31°47'18"S, 115°42'48"E; paratype: 1 female with oostegites ( MV J15691 View Materials ), near Dongara, Indian Ocean, SW Australia. GoogleMaps

Diagnosis (adult female). Rostrum round and pronounced. Pleotelson with numerous posterior setae. Antennule with accessory flagellum of three articles, first peduncle article lacking ventral spiniform setae. Antenna third peduncle article with one plumose seta on inner margin; flagellum with six articles, second and third articles with several pectinate setae on outer margin. Labrum lacking cusps. Terminal spiniform seta of mandibular palp approximately 3.5 times as long as broad. Cutting edge of cheliped fixed finger with numerous spinules along entire margin. Cutting edge of cheliped dactylus (≥ 10) with numerous setae along entire margin. Cheliped and pereopod 1 exopodite with three 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 1.5 times as long as second article.

Etymology. Named after Dongara, one of the towns from which this species was collected.

Description. Adult female with oostegites (MV– J15688 View Materials ). Body (Fig. 60A): length approximately 6.2 mm, 5.5 times as long as broad. Carapace (Fig. 60A). As long as broad, one pair mid–lateral setae and two pair shorter dorsal setae; rostrum rounded, pronounced.

Pereonites (Fig. 60A). Pereonites 4 and 5 longer than others and pereonite 6 shortest, all rounded laterally; one onite fully illustrated), one pair lateral simple and four pairs simple setae on dorsal surface; hyposphaenia present on all pleonites. Pleotelson 1.5 times shorter than combined length pleonites 1—5, rounded, narrowing posteriorly to rounded tip, with several lateral, posterior and dorsal simple setae.

Antennule (Fig. 60B). First peduncle article approximately 2.9 times as long as second and third articles combined and approximately 2.4 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 3.8 times shorter than first article, with several simple and broom setae. Third and fourth (including common article) peduncle articles subequal. Outer flagellum shorter than first peduncle article, with nine articles, one aesthetasc each on articles 4, 5 and 7. Inner flagellum with three articles, last article with three terminal simple setae.

Antenna (Fig. 60C). First peduncle article with one small simple seta on outer distal corner and medial extension bearing five plumose setae. Second peduncle article naked and squama with seven simple setae. Third peduncle article with one plumose seta on inner margin. Peduncle article 4 (last) longer than flagellum, with double row plumose setae, two proximal and two distal broom setae. Flagellum with six articles, second and third articles with several pectinate setae and one or two plumose setae on each article, distal article with four terminal simple setae.

Labrum not examined.

Mandibles (Figs. 60D–F). Left mandible (Fig. 60D): incisor process and lacinia mobilis with approximately nine teeth; spine row with four serrate spiniform setae. Right mandible (Fig. 60E): incisor process with six teeth; spine row with five serrate spiniform setae. Palp with short terminal spiniform seta, approximately 3.5 times as long as broad.

Labium (Fig. 60G) with short hair–like setae and spinulate on outer margin. Palp with long hairs on margins; ending in fairly long acuminate inner tip, approximately 5.5 times as long as broad.

Maxillule ( Fig. 61A View FIGURE 61 ). Inner endite bearing four terminally setulate setae and dense rows of hair–like setae on outer and inner margins. Outer endite with 11 long and one short spiniform setae, two subterminal setae and dense rows of hair–like setae on outer and inner margins.

Maxilla ( Figs. 61B, C View FIGURE 61 ). Inner lobe of fixed endite with posterior row of three serrate spiniform setae and with long anterior row of setae. Outer lobe of fixed endite with four distal serrate, several simple setae, and one serrate spiniform seta on posterior face. Inner lobe of moveable endite with several pectinate setae and setae terminating in three cusps. Outer lobe of moveable endite with three pectinate and two plumodenticulate (bearing proximal setules and distal denticles). Inner margin spinulate.

Maxilliped ( Figs. 61D, E View FIGURE 61 ). Basal article fringed with plumose setae on outer margin, inner margin naked. First article of palp with five simple setae on inner 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 with eight pappose setae along inner margin and one long simple and several pappose distal setae; two coupling hooks.

Cheliped ( Figs. 61F, G View FIGURE 61 ). Basis with one one long and one short simple setae near ventrodistal margin. Merus longer than broad, with five distal/subdistal simple setae (two long and three short) and one short simple seta on ventral margin. Carpus approximately four 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 spinules as in Fig. 61G View FIGURE 61 ; palm with several simple setae. Dactylus with three simple setae midway on inner surface and three simple setae just proximal to distal unguis; cutting edge with several setae (approximately 11) increasing in length distally; unguis present. Exopodite with three plumose setae (two long and one short).

Pereopod 1 ( Figs. 62A, B View FIGURE 62 ). Basis approximately 2.6 times as long as broad, with two short ventrodistal spiniform and one simple setae. Ischium with one simple seta on ventral margin. Merus longer than broad, shorter than and as broad as basis, with several simple setae distally and on ventral margin, and one spiniform seta on each distal corner. Carpus approximately 2.8 times shorter than merus, with several simple setae and two ventrodistal and one dorsodistal serrate spiniform setae. Propodus shorter than carpus, with several simple setae and five ventral and two dorsal serrate spiniform setae, one broom seta on dorsal margin, and one pectinate seta distally on the inner surface. Dactylus represented by sensory organ, shorter than propodus, with several long, terminal sensory setae with two setae on inner surface; unguis absent. Exopodite present, with three plumose distal setae (two long and one short).

Pereopod 2 ( Figs. 62C, D View FIGURE 62 ). Basis approximately three times as long as broad, with two broom setae near dorsal margin, two long simple setae near ventral margin and two shorter simple setae on ventrodistal corner. Ischium with four simple setae on ventrodistal corner (one long and three short). Merus approximately same length as carpus, with four simple setae on ventral margin and one simple seta on outer surface. Carpus approximately 1.4 times as long as broad, with several distal simple setae, five serrate spiniform setae on ventral margin and four serrate spiniform setae on distal outer surface. Propodus approximately three times shorter than basis, with several distal simple setae, one middorsal broom seta, five ventral and one dorsodistal serrate spiniform setae, and three 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. 62E View FIGURE 62 ). Similar to pereopod 2. Merus with one spiniform seta on ventral margin. Propodus with six ventral serrate spiniform setae.

Pereopod 4 ( Figs. 62F, G View FIGURE 62 ). Basis approximately 3.3 times as long as broad, with three short ventrodistal simple setae, two longer dorsodistal simple setae, and two proximal broom setae on dorsal margin. Ischium with five ventrodistal simple setae. Merus shorter than carpus, with three distal simple setae and two spiniform setae ventrodistally. Carpus with seven spiniform setae on outer surface and seven spiniform setae on inner surface. Propodus with seven serrate spiniform setae on outer surface, nine serrate spiniform setae on inner surface, one terminal serrate spiniform seta, four short bipinnate setae on outer surface and four on inner surface, and one proximal broom seta on dorsal margin. Dactylus shorter than propodus, with tuft of approximately seven sensory setae; unguis absent.

Pereopod 5 ( Figs. 63A, B View FIGURE 63 ). Similar to pereopod 4. Merus with three spiniform setae ventrodistally. Carpus

Pereopod 6 ( Fig. 63C, D View FIGURE 63 ). Basis slender, approximately 4.4 times as long as broad, with seven plumose setae on dorsal margin, six plumose and three simple setae on ventral margin, and one proximal broom seta on outer surface. Ischium with four simple setae on ventral margin. Merus as long as ischium, with four plumose setae on dorsal margin and six simple setae on ventral margin. Carpus approximately 2.1 times as long as merus, with 11 simple setae on ventral margin, one plumose and three simple setae on dorsal margin, and four simple setae distally on outer surface. Propodus shorter than the carpus, with four spiniform setae on ventral margin and 28 short bipinnate setae. Dactylus shorter than carpus and propodus combined, with single subdistal seta; unguis absent.

Pleopods ( Fig. 63E View FIGURE 63 ). Basal article with four long plumose setae. Exopodite with 21 plumose setae and endopodite with 21 plumose setae. as second article, with three simple setae. Endopodite with approximately 20 articles (exact number difficult to determine due to incomplete fusion in some articles).

Male (adult, MV– J15688 View Materials ). Very similar to female but with the following differences:

Antennule ( Fig. 63G View FIGURE 63 ). Proximal articles of outer flagellum with cluster of aesthetascs, decreasing in number distally.

Cheliped ( Figs. 64A–C View FIGURE 64 ). Basis with one short spiniform seta on ventral margin. Carpus approximately 3.6 times as long as broad. Propodus slightly more robust; fixed finger cutting edge with proximal tooth proximal to the spinules. Dactylus cutting edge with five setae distal to proximal tooth.

Remarks. Kalliapseudes dongarae n. sp. is the second known member of the genus to be recorded from SW Australia ( K. struthi Bamber, 2005 is from Esperance, Western Australia). Kalliapseudes dongarae n. sp. can be distinguished from K. struthi by having a much larger body size, a more pronounced rostrum, more setae on the pleotelson and antennal squama, the cheliped and pereopod 1 exopodite with three plumose setae, more sensory setae on the dactylus of pereopods 4 and 5, and more setae on pereopod 6.

One female specimen had a mandibular palp terminating in two spiniform setae (Fig. 60F). This is attributed to an abberrancy, since this is the first record of this occurring within the genus Kalliapseudes . A larger male specimen from the same locality (MV– J15687 View Materials ) had a different dentition on the chelae ( Fig. 64C View FIGURE 64 ) than the smaller male illustrated ( Fig. 64B View FIGURE 64 ). The proximal tooth on the dactylus cutting edge is much larger in the larger male, and the tooth on the fixed finger cutting edge is closer to the terminal unguis with fewer spinules inbetween. Males have been known to show variation in their chelae dentition depending on the developmental stage so this character should be used with caution in diagnoses and phylogenetic inference.