Deuteraphorura montagudi, Arbea, 2015

Arbea, Javier I., 2015, New Onychiurinae (Collembola ¡ Onychiuridae) from Lugo, northwestern Iberian Peninsula., Arquivos Entomolóxicos 14, pp. 235-244 : 237-238

Deuteraphorura montagudi sp. nov.

( Figs. 11–20 , Tables IV–VI, VIII)

Type locality.

Baamonde, Lugo, Galicia ( Spain). UTM 29TPH08, 400 m a.s.l.

Type material.

Holotype ¡ Female mounted on slide¡ Spain, Baamonde, Lugo (Galicia), 400 m a.s.l., leaf litter, 12.IX.2003, S. Montagud leg. Paratypes ¡ One male, three females, and two juvenile specimens mounted on slides collected together with Holotype . Holotype and Paratypes deposited in MNSV .

Etymology.

The species is cordially dedicated to Sergio Montagud, University of Valencia, responsible for the sampling of this new species.

Description.

Colour in alcohol, white. Body length (excluding antennae) of adults¡ male 1.03 mm, females 1.12- 1.43 mm. Cuticle granulation more or less uniform and fine, somewhat coarser on terga and head capsule.

Antennal bases well marked. Antennae slightly shorter than head; ratio antennae/head diagonal = 0.60–070. Ant IV with subapical organite; microsensillum in latero-external position, approximately two-fifths length from the base; sensilla not well distinguishable from ordinary chaetae, except one latero-internal and one apical sensilla ( Fig. 11 ). Ant I, II and III with 8, 13–14 and 18–19 chaetae respectively. AIIIO as in Fig. 12 , with five papillae, five guard chaetae, two small sensory rods, two bent and smooth sensory clubs and lateral microsensillum (ms).

PAO consists of 12 — 14 finely granulated vesicles ( Fig. 13 ). Labrum with 5,4,2 chaetae. Labial palp of type AB with five proximal chaetae; chaetotaxy of the basomedian field (submentum) with 4+4 chaetae, basolateral field (mentum) with 5 chaetae; outer maxillary lobe with one basal chaeta and with one sublobal hair. Mandible with strong molar plate and four apical teeth; maxilla bearing three teeth and six lamellae. Postlabial chaetae 4+4 along ventral groove ( Fig. 16 ).

Pseudocellar formula dorsally¡ 32/133/33353, ventrally¡ 11/011/3211; all subcoxa I with two pso.

Psx not visible on the body.

Dorsal chaetotaxy as in Fig. 15 and Tables IV — VI; nearly symmetrical, well differentiated into acuminate micro and blunt rod-like meso and short macrochaetae, sometimes extra chaetae and asymmetries have been observed; macrochaetae only differentiated on the two last Abd terga. Th II and III with microsensilla located laterally. Body sensilla short, rod-like, well differentiated on Abd V as 2+2 ( Fig. 17 ). Head with unpaired dorsal chaeta d0. Th I with 7 — 9+7 — 9 chaetae. Th II to Abd III with 4,4,3,3,3 chaetae respectively on both sides of axial line and without unpaired axial chaetae. Abd IV with unpaired axial chaeta (p0); Abd V without unpaired axial chaetae. Ratio chaetae M/sp = 0.5 on Abd V. Abd VI with 2 unpaired axial chaetae¡ a0 and p0 ( Fig. 17 ). Anal spines absent.

Ventral body chaetotaxy as in Fig. 16 . Ventral chaetae acuminate. Without ventral chaetae on Th sterna. VT with 6+6 apical chaetae and without basal chaetae. Furca reduced to a finely granulated area, with 2+2 posterior setulae arranged in one row ( Fig. 20 ). Anal valves with numerous acuminate chaetae; each lateral valve with a0 and 2a1; upper valve with chaetae a0, 2b1, 2b2, c0, 2C1 and 2c2 ( Fig. 18 ).

Appendages. Subcoxa 1 of I, II, III pairs of legs with 4–5,5,5 chaetae, subcoxa 2 with 0,4,3 chaetae, respectively. Tibiotarsi I, II, and III with 18(9, 8,1), 19(9, 8,2) and 17(9,7,1) chaetae respectively, of which 1,2,1 blunt macrochaetae on basal row (R chaetae). Claws without teeth. Empodial appendage slender, slightly shorter than inner edge of a claw, without basal lamella ( Fig. 19 ) (appendage length about 0.72 inner edge of claw).

Figures

Figs. 11-20.- Deuteraphorura montagudi sp. nov.¡