Androdeloscia micropunctata, Grangeiro & Souza & Christoffersen, 2021

Grangeiro, Daniela Correia, Souza, Leila Aparecida & Christoffersen, Martin Lindsey, 2021, Three new species of Androdeloscia Leistikow, 1999 (Oniscidea: Philosciidae) from the Brazilian Amazonia, Zootaxa 5047 (3), pp. 321-341: 333-338

publication ID

https://doi.org/10.11646/zootaxa.5047.3.5

publication LSID

lsid:zoobank.org:pub:F54F51CA-A27C-4EF0-BE54-D68E15D64DA5

persistent identifier

http://treatment.plazi.org/id/0390879D-F219-FFA7-FF19-FE50FF0782D8

treatment provided by

Plazi

scientific name

Androdeloscia micropunctata
status

sp. nov.

Androdeloscia micropunctata   sp. nov.

( Figs 9–12 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 , 13C View FIGURE 13 )

Material examined. Holotype: Male ( INPA 2544 View Materials ), Brazil, Amazonas , Manaus, Januari lake: mixed water, 3º20’S, 60º17’W, Jun 15, 1988, J. Adis et al. col GoogleMaps   . Paratypes: 6 males, 6 females ( INPA 2545 View Materials ), same data as for holotype GoogleMaps   ; 2 females ( CRUST. UFPB 7405 View Materials ), same data as for holotype GoogleMaps   ; 3 males, 3 females ( LABISO-UECE 0088), same data as for holotype GoogleMaps   ; 2 males, 4 females ( MZUSP 41609 View Materials ), same data as for holotype GoogleMaps   ; 1 male ( INPA 2546 View Materials ), same locality as for holotype GoogleMaps   , Jun 30, 1988, J. Adis et al. col.; 3 males ( INPA 2547 View Materials ), same locality as for holotype GoogleMaps   , May 16, 1988, J. Adis et al. col.; 1 male ( LABISO-UECE 0089), Brazil, Amazonas , Manaus , Reserva Florestal A. Ducke: solid ground, 2º55’S, 59º59’W, Nov 6-11, 1998, J. Adis et al. col GoogleMaps   .; 1 male ( INPA 2548 View Materials ), Brazil, Amazonas , Manaus , Reserva Florestal A. Ducke: solid ground, 2º55’S, 59º59’W, Nov 6, 1983, S. Golovatch leg GoogleMaps   ; 1 male ( LABISO- UECE 0090), Brazil, Amazonas , Manaus, Tarumã Mirim river: secondary forest, 3º02’S, 60º17’W, Oct 26, 1982, J. Adis et al. col GoogleMaps   .; 2 males ( CRUST. UFPB 7406 View Materials ), Brazil, Amazonas , Manaus , Reserva Florestal A. Ducke: solid ground, 2º55’S, 59º59’W, May 16, 1988, J. Adis et al. col GoogleMaps   .; 2 males ( LABISO-UECE 0091), Brazil, Amazonas , Manaus, Tarumã Mirim river: secondary forest, 3º02’S, 60º17’W, Jan 30, 1983, J. Adis et al. col GoogleMaps   .; 1 male ( MZUSP 41610 View Materials ), Brazil, Amazonas , Manaus , Reserva Florestal A. Ducke: solid ground, 2º55’S, 59º59’W, Jun 9, 1983, J. Adis et al. col GoogleMaps   .

Etymology. The species name is reference to tiny tip on outer corner of truncate apex of male pleopod I endopod.

Diagnosis. Eyes with nine dark brown ommatidia. First antenna distal article with two apical aesthetascs, separated by wide gap from group of seven subapical aesthetascs. First maxilla outer endite with 5 simple teeth (two of them smaller) + 5 teeth (4 bifid, 1 simple, smaller), lateral margin fringed with setae; concavity absent. Left mandible with 5 penicils and right mandible with 6 penicils on molar process. Male pleopod I endopod distal portion simple, truncated, with row of minute setae in distal margin and tiny tip in outer corner, exopod inner margin slightly convex, rounded portion expanded laterally. Male pleopod V exopod without elongate tip.

Description. Largest male ( Fig. 9B View FIGURE 9 ), 3 mm in length, 1 mm in width; largest non-ovigerous female, 3 mm long, 1 mm wide. Habitus narrow, pigmented dark brown ( Fig. 13C View FIGURE 13 ). Cephalothorax not involved by pereonite 1; frontal and lateral lobes slightly developed; linea frontalis absent; linea supraantennalis bent downwards in middle ( Fig. 9A View FIGURE 9 ); eyes with nine dark brown ommatidia. Pereon with noduli laterales flagelliforms, peak of coordinates b/c and d/c on coxal plates 1 and 4, respectively ( Fig. 9E View FIGURE 9 ). Pereonite 1 with anterior margin nearly straight; pereonite coxal plates 6 – 7 with conspicuous tips. Pleon narrower than pereon ( Figs 9B View FIGURE 9 , 13C View FIGURE 13 ). Pleon epimera 3–5 with very small tips ( Figs 9B View FIGURE 9 , 13C View FIGURE 13 ). Pleotelson triangular with slightly rounded apex and lateral margins slightly convex ( Figs 9B View FIGURE 9 , 13C View FIGURE 13 ).

First antenna three-jointed ( Fig. 9C View FIGURE 9 ), distal article with two apical aesthetascs separated by wide gap from a group of seven subapical aesthetascs.

Second antenna ( Fig. 9D View FIGURE 9 ) with flagellum of three articles, distal article longest, proximal and median articles subequal in length; apical organ subequal in length to third article of flagellum; aesthetascs not seen in flagellum.

Mandibles hairy lobe with many setae and two penicils on left mandible ( Fig. 10A View FIGURE 10 ) and one penicil on right mandible ( Fig. 10B View FIGURE 10 ). One penicil between molar and incisive processes in both mandibles. Molar process with fivebranched penicils on left mandible ( Fig. 10A View FIGURE 10 ) and six-branched penicils on right mandible ( Fig. 10B View FIGURE 10 ).

First maxilla inner endite ( Fig. 10D View FIGURE 10 ) with two penicils, small spine-like seta on laterodistal corner; outer endite ( Fig. 10C View FIGURE 10 ) with 5 simple teeth (two smaller) + 5 teeth (4 bifid and 1 smaller and simple).

Second maxilla ( Fig. 10E View FIGURE 10 ) inner and outer lobes hairy; inner lobe detached from outer lobe, with seven thick setae; outer lobe without tick setae.

Maxilliped ( Fig. 10F View FIGURE 10 ) basis with some conspicuous setae and sulcus lateralis; palp with one large seta on proximal article and medial article with simple setae; endite subrectangular, setose, with one seta in distal portion and without penicil.

Pereopods with strong and slender spine-like setae; dactylar seta simple; inner claw very short. Pereopod I ( Fig. 12A, C View FIGURE 12 ) merus with one trifid seta; carpus with antennal brush, ornamental sensory spine serrate, and three trifid setae.

Pleopod exopod respiratory areas not discernible. Pleopod V exopod ( Fig. 11E, G View FIGURE 11 ) triangular, bearing conspicuous transversal field of setae and hairy groove along medial margin.

Uropod exopods slightly longer than endopods, endopods inserted proximally.

Male. No apparent sexual dimorphism on pereopod I and VII ( Fig. 11A–D View FIGURE 11 ) except for small differences in size, number and topology of spine-like setae. Pleopod I endopod ( Fig. 11B View FIGURE 11 ) with simple distal portion, without “hyaline lamellae”; apex truncate, bearing groups of little thin setae and small acute tip in outer corner; exopod ( Fig. 11A View FIGURE 11 ) inner margin convex (slightly concave in female; Fig. 11G View FIGURE 11 ); rounded portion expanded laterally (shortened in female; Fig. 11G View FIGURE 11 ). Pleopod II endopod ( Fig. 11C View FIGURE 11 ) non-flagelliform, tapering towards apex; exopod ( Fig. 11D View FIGURE 11 ) subtriangular, as long as wide, one bifurcate seta on outer margin, distally, and some conspicuous setae along inner margin. Pleopod V exopod ( Fig. 11E View FIGURE 11 ) without elongate tip, two setae on outer margin, one simple, one bifurcate.

Remarks. Androdeloscia micropunctata   sp. nov. differs from all other species of genus by distinct morphology of simple distal portion of male pleopod I endopod bearing thin setae and small acute tip in outer corner; number of ommatidia (nine); number of subapical aesthetascs on first antenna (seven); and number of teeth of first maxilla (5+5).