L. pseudosinelloides sensu Gisin (1967a) L. L. pseudosinelloides L. fimicolus sensu Mari-Mutt (1988) L. serbicus L. weidneri sensu Hüther (1971) L. serbicus sensu Gruia & Popa (2005) L. weidneri L. tomosvaryi sensu Winkler & Traser (2012) L. pallidus sensu Hüther (1971) L. isabellae sensu Winkler (2017) L. pallidus L. arrabonicus sensu Traser (2000) L. cf. pallidus New data clarifying the taxonomy of European members of the Lepidocyrtus pallidus - serbicus group (Collembola, Entomobryidae) Mateos, Eduardo Winkler, Daniel Zootaxa 2018 2018-06-07 4429 3 548 568 8YYQC Reuter, 1890 Reuter 1890 [151,575,1508,1535] Collembola Entomobryidae Lepidocyrtus CoL Animalia Entomobryomorpha 2 550 Arthropoda species pallidus     Materialexamined. Threespecimens ( 1 maleand 2 females) on slides from garden compost, Vilanova( Philadelphia, USA), position N40°01’30.7” W75°21’04.0”, deposited at the UB(sample LP361),  28.xii.1999,  Arne Fjellbergleg. Five specimens ( 3 malesand 2 females) on slides from  Nerium oleanderL. soil imported from Germany, Oslo( Norway, exact position unknown), deposited at the UB (sample LP380),  15.v.2014,  Arne Fjellbergleg. Three females from soil of highly humanized area, Songjiang Qu( Shangai, China), position N31°05’46.3” E121°11’17.1”, deposited at the UB (sample LP467),  30.viii.2016, Bing Zhang leg.  Description based on specimens from three world localities.Body length 0.8‒1.3 mm(without head nor furca). Th.II not projecting over the head. Head, antennae, trunk and legs up to the femurs bluish-grey. Head apically and laterally bluish-grey, posteriorly white with blue marbling. Blue shades also on manubrium ( Fig. 3a). Antennae, legs beyond coxae, posterior side of the manubrium and ventral tube without scales.   TABLE 1.European  Lepidocyrtusspecies without scales on antennae, legs (beyond coxae) and posterior face of the manubrium, and with thorax/abdomen macrochaetotaxy such as: 00/0101+2. (non European species  L. fimicolusis also included) “?”, impossible to establish with the available current information; M, macrochaeta; shM, short macrochaeta; cM, ciliated macrochaeta; cm, ciliated mesochaeta; sm, smooth mesochaeta; ab, above; be, below. Features  L. pseudosinelloides1, 2  L.serbicus 3, 4  L.tomosvaryi 5  L.isabellae 6  L.arrabonicus 7, 8  L.fimicolus 9  L.weidneri 10, 11  L.pallidus 12,13, 14  L.florae  sp. nov. Colour diffuse bluish-grey pale-light purple white greyish-blue to dark dark blue light violet-gray to granulated blue diffuse bluish-grey dark blue bluish-black almost black Max length (mm) 2.0 1.9 1.0 1.6 1.35 1.2 1.6 1.6 1.1 Ant. IV apical bulb absent present4/absent3 absent absent absent absent absent absent absent Head macrochaetae A0( ?) A2A3M2S3Pa52 A0A2aA2A3M2S3Pa5 A0A2aA2A3M2S3Pa5 A0A2aA2A3M2S3Pa5 A0A2aA2A3Pa5 A0A2aA2S3Pa5 A0A2aA2S3Pa511 A0A2aA2S3Pa  513,14 A0A2aA2A3S3Pa5 Eyes G & H strongly reduced strongly reduced slightly reduced slightly reduced slightly reduced slightly reduced strongly reduced strongly reduced slightly reduced Ocular chaeta qabsent2 absent absent absent absent7/present8 present present present present Labial chaeta Rciliated ciliated ciliated ciliated ciliated spine-like ciliated spine-like ciliated Labial ratio R/ M2~0.75 ~0.7 ~0.7 ~0.7 ~0.6? ~0.2–0.5 ~0.05 ~0.7 Abd.II chaeta Li? absent absent absent absent present absent absent absent Abd. II chaeta a2pabsent present present present absent present present present absent Abd. II chaeta m3epresent present3/absent4 absent absent present present present present present Abd. II chaeta m5? M M M shM shM shM shM shM Abd. II ratio m3/ m5?? ~1.6 ~1.6 4–58? ~2.7 ~2.5 ~4.6–5.4 Abd. III chaeta a7? cm cm cM sm7/cm8 sm sm sm / cm 14 cm Abd. III chaeta d3? present3/absent4 present present present absent absent absent present Abd.IV chaeta m'absent absent absent absent absent absent / present absent absent / present14 absent Abd. IV ratio D1/ a~1 2 ~1.5 ~1.5 ~1.3 ~1 ~1 ~1 ~1 ~1 Abd. IV C1p -T3-D1psmooth2 smooth smooth smooth smooth7/ ciliated8 smooth / ciliated ciliated ciliated ciliated Abd. IV ratio D1p/ T3~1 2 ~1 ~1 ~1 ~1 7/ 1.4–1.98 ~2 ~2 ~2 1–1.4 Abd.IV F2cM cM cM cM cM? sm cM / sm14 cM Abd. IV F2–E2 F2be  E22 F2be E2 F2be E2 F2be E2 F2be E2? F2ab E2 F2be/ab14 E2 F2be E2 Dental tubercle absent absent present absent absent absent absent absent absent  1  L. pseudosinelloidessensu Gisin (1967a).  8  L.arrabonicus from HNHMand US. 2  L. pseudosinelloidesfrom the MHN. 9  L. fimicolussensu Mari-Mutt (1988). 3  L. serbicusfrom the ISEA. 10  L. weidnerisensu Hüther (1971). 4  L. serbicussensu Gruia & Popa (2005). 11  L. weidnerifrom the ZIZM. 5  L. tomosvaryisensu Winkler & Traser (2012). 12  L. pallidussensu Hüther (1971). 6  L. isabellaesensu Winkler (2017). 13  L. pallidusfrom UB samples LP361, LP380 and LP467. 7  L. arrabonicussensu Traser (2000). 14  L.cf. pallidusfrom UB, samples LP362, LP379 and LP540 Ratio antennal length to head diagonal length about 1.5 (head diagonal measured from cervical edge to apex of the mouth part). Relation of antennal joints I‒IV as 1:1.8:1.7:3.3. Ant. III sense organ composed of two bent sensory rods partially behind a cuticular fold. Ant. IV without apical bulb.  Labrum chaetae 4/554, prelabral chaetae ciliated, all labral chaetae smooth and pointed. Labrum intrusion inverted V-shaped, labral edge with four rounded papillae. Outer maxillary palp with two smooth chaetae and three smooth sublobal chaetae. Clypeus with ten ciliated chaetae ( 3 inrow pf, 5 inrow f, and 2 inrow L). Labial palp with lateral process on papilla E slightly curved, not reaching top of papilla.   FIGURE 3.Habitus (lateral view): a,  L. pallidus; b,  L.cf. pallidus. Labium chaetotaxy formed by 5 smooth chaetae ( a1‒a5) in anterior row; basal row with formula M1M2rEL1L2( Fig. 4), all ciliated except  rwhichis vestigial, ratio of r/M~0.05. Ventral cephalic grove with 4+4 ciliated chaetae. Dorsal cephalic macrochaetotaxy formula A0A2a A2S3Pa5( Fig. 5). Eye patches dark blue, eyes well visible. Diameters of eye A‒F about the same; eyes G and H smaller (A:G ≈ 2.7; A:H ≈ 1.7). Interocular chaetotaxy with s, t, p, qchaetae and 3‒4 intraocular scales. Body macrochaetae 00/0101+2. Th.II to abd.I dorsal chaetotaxy the same as described for  L. florae  sp. nov.( Figs 20 –22). Abd.II –III with the same dorsal chaetotaxy as described for  L. weidneriand  L. pallidusin Hüther (1971), except for mesochaeta a7on abd.III which is ciliated in the examined specimens. Abd.IV ( Fig. 6) with the same dorsal chaetotaxy as described for  L. pallidusin Hüther (1971); on trichobothrial complex chaeta D1ptwo times longer than chaetae C1pand T3( Fig. 7); one female from sample LP380 with one extra accessory chaeta of trichobotrium T2located between chaetae mand aonly on the left side of the body. Abd.V dorsal chaetotaxy as in Fig. 8. Trochanteral organ with 16‒21 smooth spiny chaetae forming a V shape pattern. Unguiculus acuminate with finely serrated outer edge. Inner edge of unguis with a basal pair of teeth 50% along its length, and two unpaired teeth at 75% and 95%, respectively. Of the basal pair teeth one tooth is much larger than the other, the proximal unpaired tooth is very strong, and the distal one is very weak and difficult to see in many specimens. This unguis morphology match the description done by Hüther for  L. weidneri( Hüther 1971: pg 163, Figs 13 –15). Tibiotarsal tenent hair spatulate. Ventral tube with a maximum of 13+13 ciliated chaetae on anterior side and 18 on posterior side. Lateral flap with a maximum of 10 laterodistal chaetae (7 smooth and 3 ciliated). Manubrium with 2+2 ciliated apical chaetae on anterior side. Manubrial plate with 2 inner chaetae and 3 –4 chaetae outer to the 2 pseudopores. Dental tubercle absent.   Discussion.Based on the redescription of  L. pallidusby Hüther (1971: pg. 164)and Gisin (1965: Fig. 1p), the presence or absence of dorsal cephalic macrochaeta A3cannot be argued with certainty. Comments in later papers ( Rusek 1985, Traser 2000, Mateos 2008, Winkler & Traser 2012) suggested that this macrochaeta is present. Thanks to the present study of freshly collected specimens of  L. pallidus, we can draw the conclusion that this species lacks the dorsal cephalic macrochaeta A3and its dorsal head macrochaetae formula can therefore be described as A0A2a A2S3Pa5. It is noteworthy to mention, that the figure of dorsal head of  L. pallidusas provided by Fjellberg (2007: Fig. 79M)erroneously misses macrochaetae A2and A2a(A. Fjellberg pers. comm.). 1848580537 1999-12-28 Material & Three United States of America 40.025196 Philadelphia 1 -75.35111 Vilanova 2 550 3 2 1 UB 1848580539 2014-05-15 Arne Fjellberg Germany Oslo 2 550 5 2 3 Oslo 1848580540 2016-08-30 Arne Fjellberg & Songjiang Qu China 31.096195 Shangai 1 121.18809 2 550 1 Shangai 1848580541 [699,984,1371,1391] HNHM United States of America US 3 551 8