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Research Article ISSN 2336-9744 (Online) | ISSN 2337-0173 (Print) the Journal Is Available on Line At Research Article ISSN 2336-9744 (online) | ISSN 2337-0173 (print) The journal is available on line at www.biotaxa.org/em https://zoobank.org/urn:lsid:zoobank.org:pub:7A76F10A-148C-477F-B978-B88C16F49EF3 One new species of the family Niphargidae from Bosnia and Herzegovina (Contribution to the Knowledge of the Amphipoda 289) GORDAN S. KARAMAN Montenegrin Academy of Sciences and Arts, 20000 Podgorica, Montenegro E-mail: [email protected] Received 10 March 2016 │ Accepted 24 April 2016 │ Published online 26 April 2016. Abstract From the subterranean waters of the Velika Bukovička špilja Cave near Bukovica village (Tomislavgrad region, Bosnia and Herzegovina) is described and figured one new species of the family Niphargidae (Amphipoda, Gammaridea), Niphargus bukovicensis, sp. n. This species is characterized by presence of elevated number of spines on dactylus of pereopods 6 and 7 only, by numerous setae along dactylus outer margin of gnathopods 1-2, pointed epimeral plate 3 and by elongated inner and outer ramus of uropod 3 in males. The taxonomical relation of this species regarding other similar members of genus Niphargus Schiödte, 1849, is discussed. Key words: taxonomy, new species, Amphipoda, Niphargus bukovicensis, Bosnia and Herzegovina, cave. Introduction The fauna of the Amphipoda in Bosnia and Herzegovina has been studied by various authors and over 60 species of various families (Gammaridae, Niphargidae, Bogidiellidae, Hadziidae, Typhlogammaridae, Crangonyctidae, Talitridae, etc.) have been established, including nearly 30 members of the genus Niphargus Schiödte, 1849 (G. Karaman, 2010); over half of known Niphargus taxa in Bosnia and Herzegovina are endemic for this and adjacent regions. During the recent investigations of caves in Bosnia and Herzegovina, organized by the speleological Society Mijatovi Dvori in Tomislavgrad, in association with the speleologists from Bosnia and Herzegovina, Croatia, Montenegro and other countries, various samples of Amphipoda have been collected and gave me at disposition for study. During the study of this material, one new species of the family NIphargidae (Amphipoda Gammaridea) is established and described here. The existence of over 300 known taxa of genus Niphargus from Europe, Asia Minor and Near East request more and more detailed descriptions of each species to make possible recognition of each species and its variability, and eventual comparison of morphological characters with results of genetic investigations of these species. Ecol. Mont., 6, 2016, 15-33 NEW SPECIES OF THE FAMILY NIPHARGIDAE FROM BOSNIA AND HERZEGOVINA Material and Methods The sample was collected in the subterranean water by hand-net and catching by hands. The collected specimens were preserved in 70% ethanol. Specimens were examined and dissected using a Wild M 20 stereomicroscope and drawn using a camera lucida attachment. The animals were temporarily mounted in the mixture of glycerin and water for dissection and drawing of body parts, and later transferred on slides with liquid of Faure for final preservation. The body length of examined specimens was measured by tracing individual’s mid-trunk lengths (tip of the rostrum to end of telson) and drawings were made using a camera lucida and inked manually. Some morphological terminology and setae formulae follow G. Karaman’s terminology (Karaman, G., 1969; 1970; 2012b) for palpus article 3 of mandible [A-setae= setae on outer face; B-setae= setae on inner face of article; D-setae= short setae along ventral lateral margin of article; F-setae= long setae at distal part of article], and distal corner of propodus of gnathopods 1 and 2 [S-spine= corner palmar spine on outer face; L-spines= slender serrate spines sitting near S-spine on outer face; M-setae= row of long facial submarginal setae on outer face; R-spine= subcorner spine on inner face]. This study is based on the morphological, ecological and zoogeographical data. Taxonomical part Family NIPHARGIDAE Niphargus bukovicensis sp. n. Figures 1-9 Material examined: Bosnia and Herzegovina: S-7234- Velika Bukovička špilja Cave [Velika Bukovača Cave] near Bukovica village (Tomislavgrad reg.), coordinates: X=4837278, y= 6434669, z= 987] including source going out of the cave, 5.9.2014, many exp. (leg. Gordan Karaman & Božana Karaman). Diagnosis Body very slender, with short antennae and legs, and with long uropod 3. Epimeral plates 1 and 2 with almost subrounded ventroposterior corner, epimeral plate 3 with pointed corner and concave posterior margin. Maxilla 1 inner plate with 2-3 setae, outer plate with 7 spines (most of them with one lateral tooth each); Inner plate of maxilliped short, with 3 distal spines. Antenna 2 flagellum longer than last peduncular article. Coxae 1-4 short, coxa 1 not produced, coxa 4 unlobed. Propodus of gnathopods 1-2 smaller than corresponding coxae, trapezoid, its dactylus with row of setae along outer margin. Dactylus of pereopods 2-5 stout, with one strong spine at inner margin. Dactylus of pereopod 6 with 1-2 spines at inner margin; dactylus of pereopod 7 in larger specimens with 2-3, rarely only one spine at inner margin. Pereopods 5-7 with article 2 longer than broad, without ventroposterior lobe. Pleopods with 2 retinacula, peduncle of pleopods 1-3 scarcely setose. Urosomal segment 1 at each dorsolateral side with seta, urosomal segment 2 on each dorsolateral side with setae or spines. Uropod 3 in males with elongated peduncle and elongated inner ramus; outer ramus 2-articulated, second article in males long, in females shortened, but always much longer than diameter of article itself. Telson slightly longer than broad, incised nearly 2/3 of telson-length, each lobe with distal, lateral and facial spines. Description. Male 20.0 mm (holotype): Body very slender, metasomal segments 1-3 with 3-4 short dorsoposterior marginal setae each (fig. 1G). Epimeral plates 1 and 2 with subrounded ventroposterior corner and convex posterior margin bearing 6-7 short setae each (fig. 1G). Epimeral plate 3 with strongly acute ventroposterior corner and sinusoid posterior margin bearing 5-6 short setae (fig. 1G). Epimeral plate 2 with 3 subventral spines, epimeral plate 3 with 2 subventral spines. 16 KARAMAN Figure 1. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A= antenna 1; B= accessory flagellum; C= aesthetasc; D= antenna 2; E= head; F= mandible palpus, inner face; G= epimeral plates 1-3. Ecol. Mont., 6, 2016, 15-33 17 NEW SPECIES OF THE FAMILY NIPHARGIDAE FROM BOSNIA AND HERZEGOVINA Figure 2. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A-B= gnathopod 1, outer face; C= distal corner of gnathopod 1 propodus [S= corner spine; L= lateral spines; R= subcorner spine; M= facial M-setae]; D-E= gnathopod 2, outer face; F= distal corner of gnathopod 2 propodus [S= corner spine; L= lateral spines; R= subcorner spine]. 18 KARAMAN Figure 3. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A-B= pereopod 3; C-D= pereopod 4; E-labium; F= maxilliped; G= maxilla 2. Ecol. Mont., 6, 2016, 15-33 19 NEW SPECIES OF THE FAMILY NIPHARGIDAE FROM BOSNIA AND HERZEGOVINA Figure 4. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A-B= pereopod 5; C-D-F= left pereopod 6; E= dactylus of right pereopod 6; G-H-I= pereopod 7. 20 KARAMAN Figure 5. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A= peduncle of pleopod 1; B= peduncle of pleopod 2; C= peduncle of pleopod 3; D= maxilla 1; E= urosome with uropods 1-2; F= left uropod 3; G= right uropod 3. Ecol. Mont., 6, 2016, 15-33 21 NEW SPECIES OF THE FAMILY NIPHARGIDAE FROM BOSNIA AND HERZEGOVINA Figure 6. Niphargus bukovicensis, sp. n., Velika Bukovička špilja Cave, male 20.0 mm: A= labrum; B= telson. Male 15.0 mm: C= antenna 2. Female 13.0 mm: D-E= pereopod 3; F-G= pereopod 4. 22 KARAMAN Urosomal segment 1 on each dorsolateral side with 1 seta; urosomal segment 2 on each dorsolateral side with 2 setae; urosomal segment 3 naked (fig. 5E). Urosomal segment 1 at each ventroposterior corner with on weak short spine (fig. 5E). Head with short rostrum and short subrounded lateral cephalic lobes, ventroanterior excavation well developed eyes absent (fig. 1E). Antenna 1 shorter than half of the body (ratio: 8:20), peduncular articles 1-3 progressively shorter (ratio: 68:53:29), scarcely setose (fig. 1A); main flagellum scarcely setose, consisting of 26 articles (most of them with one short aesthetasc) (fig. 1C); accessory flagellum 2-articulated, much shorter than last peduncular article (fig. 1A, B). Antenna 2: peduncular article 3 short, with distoventral bunch of setae; peduncular articles 4 and 5 of equal length; article 4 at ventral margin with 3-4 bunches of setae (the longest setae exceeding the diameter of article itself (fig. 1D), at dorsal margin with 4 bunches of short setae; article 5 at ventral margin with 5 bunches of long setae (setae remarkably exceeding the diameter of article itself), at dorsal margin with several bunches of short setae; flagellum slender, with missing distal part, probably longer than last peduncular article (fig. 1D) (see sub Variability, fig. 6C). Antennal gland cone short (fig. 1D, 6C). Mouthparts well developed. Labrum broader than long, with convex distal margin (fig. 6A). Labium much broader than long, inner lobes well developed; outer lobes subrounded distally (fig. 3E). Mandibles: molar triturative, right mandible molar with 1 long lateral seta. Left mandible: incisor with 5 teeth and lacinia mobilis with 4 teeth and 6-7 rakers. Right mandible: incisor with 4 teeth and lacinia mobilis bifurcate, with several teeth, accompanied by 6-7 rakers. Mandibular palpus 3-articulated: first article naked (fig. 1F); second article hardly shorter than third article and provided with 10 setae (fig.
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