Friesea wabao, Weiner & Bedos & Deharveng, 2009

Weiner, Wanda Maria, Bedos, Anne & Deharveng, Louis, 2009, Species of the genus Friesea (Collembola, Neanuridae) from New Caledonia and Vanuatu, Zoosystema 31 (3), pp. 507-518 : 511-513

publication ID	https://doi.org/ 10.5252/z2009n3a8
DOI	https://doi.org/10.5281/zenodo.5470114
persistent identifier	https://treatment.plazi.org/id/EB7AE518-FFBB-FFCB-FEF0-FB30595B7FFF
treatment provided by	Marcus
scientific name	Friesea wabao
status	sp. nov.

Treatment

Friesea wabao View in CoL n. sp.

( Fig. 2 View FIG )

TYPE MATERIAL. — New Caledonia. Loyalty Islands, Maré Island, Wabao , near the chefferie, niaoulis forest, 2 m a.s.l., soil, Berlese extraction, 5.XI.2000, Deharveng & Bedos leg. (sample no. NC00-214), ♀ holotype ( MNHN). — Same data as holotype (sample no. NC00-214), 1 ♂ preadult paratype ( MNHN). — Same data as holotype, litter (sample no. NC00-215), 1 ♀ adult paratype ( ISEA) ; 1 ♂ juvenile paratype ( MNHN) .

TYPE LOCALITY. — New Caledonia, Loyalty Islands, Maré Island, Wabao, near the chefferie, niaoulis forest, 2 m a.s.l., soil.

OTHER MATERIAL EXAMINED. — New Caledonia. Loyalty Islands, Lifou Island, Hanawa,forest on limestone, 40 m a.s.l., soil, Berlese extraction, 27.X.2000, Deharveng & Bedos leg. (sample n° NC00-126), 5 ex. on slide ( MNHN).

Grande-Terre, Rivière Bleue, dry forest, 150 m a.s.l., litter, Berlese extraction, 10.XII.1995, Deharveng & Bedos leg. (sample no. NC95-194), 1 ex. ( MNHN) ; 1 ex. ( ISEA). — Same data, soil (sample no. NC95-195), 4 ex. ( MNHN). — Same data, soil (sample no. NC95-199), 4 ex. ( MNHN) ; 1 ex. ( ISEA) .

ETYMOLOGY. — From the name of its type locality, Wabao, on Maré Island.

ECOLOGY. — Found in forest soil of lowland forest.

DESCRIPTION

Habitus and buccal cone typical for the genus Friesea . Length:0.77 mm (holotype), 0.78-0.92 mm (paratypes). Colour: white in alcohol. Integument secondary granules rather small.

Antennae about ⅔ of head length. Antennal segment I with 7 chaetae, antennal segment II with 12 chaetae. Sensory organ of antennal segment III consisting of 2 small subcylindrical internal s-chaetae, 2 subcylindrical guard s-chaetae, 1 ventral s-microchaeta. Antennal segment IV with 7 subcylindrical s-chaetae (S1-4, S7-9 present), 1 small s-microchaeta placed between S7 and S8, and 1 small subapical organite. Apical vesicle simple ( Fig. 2B, C View FIG ).

Ocelli 0-1+0-1; 1.2-2.0 times of diameter of secondary granule when present. Postantennal organ absent. Chaetotaxy of labrum: 4/5,3,4 ( Fig. 2E View FIG ). Labium with papillated chaeta L ( Fig. 2E View FIG ).

Dorsal chaetotaxy as in Figure 2A View FIG , with rather short, subequal chaetae and slightly longer s-chaetae, their formula per half tergum: 022/11111. Head with chaetae a0, d0 (absent in one specimen) and 3 (sometimes 2) chaetae oc. Thoracic tergum I with 4+4 chaetae. Thoracic tergum II usually with 11+11 chaetae (12+ 12 in one specimen) (4 chaetae Di including a2, 4 chaetae De including s-chaeta in third position of p-row and 3 chaetae DL including 1 s-chaeta), and 1 s-microchaeta in DL. Thoracic tergum III usually with 10+10 chaetae (same arrangement as previous tergum, but without a2). Thoracic sterna II and III without chaetae. Abdominal tergum V with 2+2 chaetae between s-chaetae. Abdominal tergum VI with 3 anal spines. Some macrochaetae of posterior terga weakly capitate. Ventral abdominal chaetotaxy as in Figure 2F View FIG .Ventral tube with 4+4 chaetae.Abdominal sternum II with 6+6 (5+5, 5+4, 6+7), abdominal sternum III with 7+7 (6+5, 6+7, 7+7, 7+8) chaetae Ve. Anal valves each with 3 chaetae hr.

Tibiotarsi I, II and III with 18, 18 and 17 chaetae respectively, of which 11 in distal whorl, without chaetae M ( Fig. 2D View FIG ).Tibiotarsus III without chaeta B7. No clavate tenent hairs. Femora I, II and III with 12, 11 and 10 chaetae respectively, each trochanter with 5 chaetae, coxae I, II and III with 3, 8 and 7-9 chaetae, subcoxae 2 of legs I, II and III with 0, 2 and 2 chaetae, subcoxae 1 of legs I, II and III with 1, 2 and 2 chaetae. Claw untoothed.

Tenaculum with two teeth on each ramus. Furca small, dens with 3 chaetae, mucro small to absent.

REMARKS

The 1+1 ocelli of the new species are in the anterior part of the ocular plate. They are 1.2-2 times as long as the diameter of a secondary granule in the type specimens. In the Hanawa population, they are absent in four specimens and present asymmetrically as a minute round structure in the fifth one. Such variations have already been reported in populations of various microphthalmic species of Friesea ( Jordana et al. 1997) . The size of the mucro is also variable: small but clearly present in the type specimens, very small in the Rivière Bleue specimens, absent or inconspicuous in the Hanawa population. It is possible that the three different populations here identified as F.wabao n. sp., are actually distinct but closely related species, but more specimens need to be studied to support this hypothesis.

Two other species of the mirabilis group have three anal spines and 1+1 or less ocelli: F. monoculata Dunger, 1972 from Germany and F. santo n. sp. described below from Vanuatu. Both have (5)-6 thickened s-chaetae on the fourth antennal segment, which is the standard s-chaetotaxy for Friesea , while F. wabao n. sp. has constantly 7 s-chaetae due to the development of an additional chaeta S9, located below the distal chaetae S7-S8.