Entomobrya leviseta, Ma & Shi, 2018

Yitong Ma & Shidi Shi, 2018, Three new species of Entomobrya (Collembola: Entomobryidae) from China, European Journal of Taxonomy 419, pp. 1-21 : 2-8

publication ID	https://doi.org/ 10.5852/ejt.2018.419
DOI	https://doi.org/10.5281/zenodo.5672089
persistent identifier	https://treatment.plazi.org/id/343F87A7-FFB8-5E3D-EF52-F98DFBDC5D79
treatment provided by	Plazi
scientific name	Entomobrya leviseta
status	sp. nov.

Treatment

Entomobrya leviseta View in CoL sp. nov

urn:lsid:zoobank.org:act:5FE7323A-E49C-40D9-9576-6B82E3D4D355

Figs 1–5 View Fig. 1 View Fig. 2 View Fig. 3 View Fig.4 View Fig. 5 , Table 1

Diagnosis

Eyepatches and lateral margin of Th. II with blue pigment; a longitudinal blue stripe present along midline from head to Th. II, Th. III with a broad transverse blue stripe; Abd. IV with two irregular transverse blue stripes; prelabral chaetae of labrum smooth; subapical tooth of mucro equal to or slightly larger than apical tooth.

Etymology

The specific epithet is named after the smooth (from Latin ‘ levis ’) prelabral chaetae of the labrum.

Type material

Holotype

CHINA: ♀ on slide, 108 National Highway, Mazhao Town , Zhouzhi County, Xi’an City, Shaanxi Province, 34°03′35″ N, 108°11′47″ E, altitude ca 566 m, in litter, with aspirator, 15 Jul. 2012, Yitong Ma leg. ( Nantong University, collection number 1115 ). GoogleMaps

Paratypes

CHINA: 2 ♀♀ on slides, same collecting data as for holotype; GoogleMaps 5 ♀♀ on slides, Famen Temple , Fufeng County, Baoji City, Shaanxi Province, 34°25′29″ N, 107°53′59″ E, altitude ca 602 m, in litter, with aspirator, 11 Jul. 2012, Yitong Ma leg. ( Nantong University, collection number 1101 ). GoogleMaps

Description

MEASUREMENTS. Body length up to 2.68 mm.

COLOUR. Ground colour yellowish. Eyepatches dark blue. Antennae and lateral margin of head and Th. II with blue pigment. A longitudinal blue stripe present along midline from head to Th. II. Th. III with a broad transverse blue stripe. Abd. II with scattered pigment laterally and Abd. III with a very narrow blue stripe posteriorly.Abd. IV with two irregular transverse blue stripes. Coxae and tibiotarsi with weak pigment ( Fig. 1A–B View Fig. 1 ).

HEAD. Antenna 0.47–0.63 times as long as body. Antennal segments ratio as I: II: III: IV = 1.00:1.28– 1.72: 1.28–1.65: 1.84–2.57. Distal part of Ant. IV with many sensory chaetae, normal ciliate chaetae and apical bulb bilobed ( Fig. 2A View Fig. 2 ). Lateral process (l.p.) of labial palp curved with tip not reaching apex of same papilla ( Fig. 2B View Fig. 2 ). Subapical chaeta of maxillary outer lobe subequal to apical one, 3 smooth hairs on sublobal plate ( Fig. 2C View Fig. 2 ). Labial chaetae MREL1L2, all ciliate; chaeta R 0.56–0.63 times as long as chaeta M ( Fig. 2D View Fig. 2 ). Labral chaetae 4/5, 5, 4, all smooth; labral papillae 4 and each with 1 minute denticle ( Fig. 2E View Fig. 2 ). Clypeus not clearly seen. Dorsal cephalic chaetotaxy with 4 antennal (An), 4 median (M) and 8 sutural (S) mac, 7 mac in Gr. II, interocular chaetae as p, s, t ( Fig. 2F View Fig. 2 ).

THORAX. Th. II with 4 (m1, m2, m 2i, m 2i 2) medio-medial, 3 (m4, m 4i, m4p) medio-sublateral, 31–34 posterior mac, 1 ms and 2 sens. Th. III with 38–43 (46) mac and 2 sens ( Fig. 3A View Fig. 3 ). Coxal macrochaetal formula as 3 (2 pseudopores) / 4+1–2, 3 (5–6 pseudopores)/ 4+2 (2 pseudopores) ( Fig. 3B–D View Fig. 3 ). Trochanteral organ with 43–44 (61) chaetae ( Fig. 3E View Fig. 3 ). Tenent hair subequal to inner side of unguis, with tip strongly clavate. Unguis with 4 inner teeth, basal pair located 0.44̅0.49 distance from base of inner edge of unguis, distal unpaired two respectively at 0.68̅0.73 and 0.85̅0.87 distance from base. Unguiculus acuminate with outer edge serrate ( Fig. 3F View Fig. 3 ).

ABDOMEN. Abd. IV 5.31–7.55 times as Abd. III in length along dorsal midline. Abd. I with 11(10) (m 2i, m2, m3, m4, m 4i, m4p, a1, a1a, a2, a3, a5, m 4i sometimes absent) mac, 1 ms and 1 sens; sens inner to ms. Abd. II with 6 (7) (a2, a3, m3e, m3ea, m3ep, m3, m 3ei sometimes present) central, 1 (m5) lateral mac and two sens. Abd. III with 3 (a2, a3, m3) central, 4 (am6, pm6, m7a, p6) lateral mac, 1 ms and 2 sens ( Fig. 4A View Fig.4 ). Abd. IV with 33̅46 central and 20̅23 lateral mac ( Fig. 4B View Fig.4 ). Abd. V with 3 sens ( Fig. 4C View Fig.4 ). Ventral tube with 15–23 ciliate chaetae on anterior face ( Fig. 5A View Fig. 5 ), 2 apical smooth and many ciliate chaetae on posterior face ( Fig. 5B View Fig. 5 ), 6 smooth and 8̅13 ciliate chaetae on each lateral flap ( Fig. 5C View Fig. 5 ). Manubrial plaque with 8̅14 ciliate chaetae and 3 pseudopores on each side ( Fig. 5D View Fig. 5 ). Distal smooth part of dens about 1.00–1.28 times as long as mucro. Mucro bidentate and subapical tooth equal to or slightly larger than apical tooth. Basal spine almost reaching apex of subapical tooth ( Fig. 5E View Fig. 5 ).

Remarks

The prelabral chaetae on labrum are ciliated in Entomobrya generally ( Jordana 2012) or finely ciliate ( Katz et al. 2015), but they are smooth in E. striatella Börner, 1909 ( Jordana 2012; Yosii et al. 1963). The new species is the second species of Entomobrya with smooth prelabral chaetae and it is also similar to E. striatella in colour pattern on Th. II, with three longitudinal stripes, but the colour pattern on Th. III, Abd. IV̅V and chaetotaxy on Abd. I & IV are different ( Table 1).