Tabasconura tapajulapana, Palacios-Vargas, José G. & Catalán, Elihú, 2015

Palacios-Vargas, José G. & Catalán, Elihú, 2015, Tabasconura tapijulapana gen. nov. sp. nov. (Collembola: Neanuridae) from Tabasco, México, Zootaxa 3947 (1), pp. 131-138 : 137

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Tabasconura tapajulapana

sp. nov.

Tabasconura tapajulapana sp. nov.

( Figs. 1‒4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 )

Type material. Holotype adult female and three juvenile paratypes females.

Type locality. México, Cueva de las Sardinas, Tapijulapa, Municipio de Tacotalpa, Tabasco. 17 ° 27 ’05” N and 92 ° 47 ’00”, 50 m altitude. Ex litter, 14 -III- 2002, Daniel A. Estrada coll.

Etymology. The new species is named after the nearest town to the type locality.

Description. Length 1.86 mm. Colour white in alcohol (70 %). Cuticular granulation strong. Tubercles well developed and slightly elongated on thoracic and abdominal segments ( Figs 1 View FIGURE 1 a,b), lacking seta and tubercle Di on Th. I, body with slightly serrate macrosetae (MB) and slightly serrate microsetae (mb) ( Fig. 3 View FIGURE 3 b), sensorial setae (ss) pattern 022/ 11111. Tubercles De and DL, fused on Abd. IV; De +DL+L on Abd V. Abd. VI bilobed with slight cryptopygy ( Fig. 1 View FIGURE 1 b).

Ant. I with seven setae, four slightly serrate dorsal macrosetae, and others smooth and thin. Ant. II with 11 setae, three slightly serrated and the others thin, smooth. Ant. III sensorial organ with two globular microsensilla under a cuticular fold, two long guard sensilla, and one ventro-external microsensillum. Ant. IV as typical for the tribe with sensilla S 7 hypertrophied, S 2 also similarly hypertrophied as is S 7 ( Fig. 2 View FIGURE 2 b). Eyes 2 + 2 with black pigment. Head with tubercles well developed ( Fig 1 View FIGURE 1 a).

Tibiotarsi I, II and III lacking tenent hairs, with 18, 18 and 17 setae respectively ( Fig. 3 View FIGURE 3 a). Thoracic and abdominal chaetotaxy as in Figs. 1 View FIGURE 1 a and 1 b. Total chaetotaxy shown in Table 1 View TABLE 1 .

Labium with 11 pairs of setae ( Fig. 2 View FIGURE 2 a) and labrum typical of the family. Maxilla styletiform lacking molar plate and mandible with two inner teeth, typical of the family ( Figs 3 View FIGURE 3 c,d). Ventral tube with 4 + 4 setae of similar length. Abd. II ventrally with 5 + 5 setae, two longer than others. Furcal vestige with only 3 + 3 macrosetae and 8 + 8 lateral setae. Each anal valve with 10 macrosetae and 2 microsetae, 4 + 4 lateral setae two of them slightly serrated ( Fig. 4 View FIGURE 4 a). Genital plate of female, 4 + 4 pregenital setae, 28 circumgenital setae and 2 eugenital setae ( Fig. 4 View FIGURE 4 b).

Note: Numbers are the amount of setae by demitergite, presence or absence of characters are denoted with symbols (+) and (-) respectively. Species for comparison were selected from phylogenetic analyses made by Palacios-Vargas, et al (2009) and Paniagua Nucamendi (2014).