Entomobrya leviseta Ma & Shi, 2018, sp. nov
Creators: name: Yitong Ma
name: Shidi Shi
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Entomobryidae
Entomobrya
Entomobrya leviseta

description: Entomobrya leviseta sp. nov
urn:lsid:zoobank.org:act:5FE7323A-E49C-40D9-9576-6B82E3D4D355
Figs 1–5, 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).
Paratypes
CHINA: 2 ♀♀ on slides, same collecting data as for holotype; 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).
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).
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). Lateral process (l.p.) of labial palp curved with tip not reaching apex of same papilla (Fig. 2B). Subapical chaeta of maxillary outer lobe subequal to apical one, 3 smooth hairs on sublobal plate (Fig. 2C). Labial chaetae MREL1L2, all ciliate; chaeta R 0.56–0.63 times as long as chaeta M (Fig. 2D). Labral chaetae 4/5, 5, 4, all smooth; labral papillae 4 and each with 1 minute denticle (Fig. 2E). 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).
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). Coxal macrochaetal formula as 3 (2 pseudopores) / 4+1–2, 3 (5–6 pseudopores)/ 4+2 (2 pseudopores) (Fig. 3B–D). Trochanteral organ with 43–44 (61) chaetae (Fig. 3E). 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).
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). Abd. IV with 33̅46 central and 20̅23 lateral mac (Fig. 4B). Abd. V with 3 sens (Fig. 4C). Ventral tube with 15–23 ciliate chaetae on anterior face (Fig. 5A), 2 apical smooth and many ciliate chaetae on posterior face (Fig. 5B), 6 smooth and 8̅13 ciliate chaetae on each lateral flap (Fig. 5C). Manubrial plaque with 8̅14 ciliate chaetae and 3 pseudopores on each side (Fig. 5D). 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).
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).
description: Published as part of Yitong Ma & Shidi Shi, 2018, Three new species of Entomobrya (Collembola: Entomobryidae) from China, pp. 1-21 in European Journal of Taxonomy 419 on pages 2-8, DOI: 10.5852/ejt.2018.419, http://zenodo.org/record/1211301