Lepidocyrtus pallidus Reuter, 1890

Mateos, Eduardo & Winkler, Daniel, 2018, New data clarifying the taxonomy of European members of the Lepidocyrtus pallidus - serbicus group (Collembola, Entomobryidae), Zootaxa 4429 (3), pp. 548-568: 550-553

publication ID

https://doi.org/10.11646/zootaxa.4429.3.5

publication LSID

lsid:zoobank.org:pub:AA87BBFC-DF19-4A05-A227-133C0A92049A

persistent identifier

http://treatment.plazi.org/id/553A87DD-FF84-FFCA-DCB6-FA3359D23D89

treatment provided by

Plazi

scientific name

Lepidocyrtus pallidus Reuter, 1890
status

 

Lepidocyrtus pallidus Reuter, 1890 

Figs 3‒8, Tab 1

Material examined. Three specimens (1 male and 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.1999GoogleMaps  , Arne Fjellberg leg. Five specimens (3 males and 2 females) on slides from Nerium oleander  L. soil imported from Germany, Oslo ( Norway, exact position unknown), deposited at the UB (sample LP380), 15.v.2014  , Arne Fjellberg leg. 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.2016GoogleMaps  , 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.

(non European species L. fimicolus  is 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. pseudosinelloides  1, 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 A 0 (?) A 2 A 3 M 2 S 3 Pa 5 2 A 0 A 2 aA 2 A 3 M 2 S 3 Pa 5 A 0 A 2 aA 2 A 3 M 2 S 3 Pa 5 A 0 A 2 aA 2 A 3 M 2 S 3 Pa 5 A 0 A 2 aA 2 A 3 Pa 5 A 0 A 2 aA 2 S 3 Pa 5 A 0 A 2 aA 2 S 3 Pa 5 11 A 0 A 2 aA 2 S 3 Pa 5 13,14 A 0 A 2 aA 2 A 3 S 3 Pa 5

Eyes G & H strongly reduced strongly reduced slightly reduced slightly reduced slightly reduced slightly reduced strongly reduced strongly reduced slightly reduced

Ocular chaeta q absent2 absent absent absent absent7/present8 present present present present

Labial chaeta R ciliated ciliated ciliated ciliated ciliated spine-like ciliated spine-like ciliated

Labial ratio R / M 2 ~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 a2p absent present present present absent present present present absent

Abd. II chaeta m3e present 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 4–5 8? ~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-D1p smooth2 smooth smooth smooth smooth7/ ciliated8 smooth / ciliated ciliated ciliated ciliated

Abd. IV ratio D1p / T3 ~1 2 ~1 ~1 ~1 ~1 7/ 1.4–1.9 8 ~2 ~2 ~2 1–1.4

Abd.IV F2 cM cM cM cM cM? sm cM / sm14 cM

Abd. IV F2–E2 F2 be E2 2 F2 be E2 F2 be E2 F2 be E2 F2 be E2? F2 ab E2 F2 be/ab14 E2 F2 be E2

Dental tubercle absent absent present absent absent absent absent absent absent

1 L. pseudosinelloides sensu Gisin (1967a)  . 8 L.  arrabonicus from HNHMAbout HNHM and US  .

2 L. pseudosinelloides  from the MHN. 9 L. fimicolus sensu Mari-Mutt (1988)  .

3 L. serbicus  from the ISEA. 10 L. weidneri sensu Hüther (1971)  .

4 L. serbicus sensu Gruia & Popa (2005)  . 11 L. weidneri  from the ZIZM.

5 L. tomosvaryi sensu Winkler & Traser (2012)  . 12 L. pallidus sensu Hüther (1971)  .

6 L. isabellae sensu Winkler (2017)  . 13 L. pallidus  from UB samples LP361, LP380 and LP467.

7 L. arrabonicus sensu Traser (2000)  . 14 L. cf. pallidus  from 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 in row pf, 5 in row f, and 2 in row L). Labial palp with lateral process on papilla E slightly curved, not reaching top of papilla.

Labium chaetotaxy formed by 5 smooth chaetae (a1‒a5) in anterior row; basal row with formula M 1 M 2 rEL 1 L 2 ( Fig. 4 View Figure ), all ciliated except r which  is vestigial, ratio of r/M ~0.05. Ventral cephalic grove with 4+4 ciliated chaetae.

Dorsal cephalic macrochaetotaxy formula A 0 A 2a A 2 S 3 Pa 5 ( Fig. 5 View Figure ). 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, q chaetae 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 View Figure ). Abd.II – III with the same dorsal chaetotaxy as described for L. weidneri  and L. pallidus in Hüther (1971)  , except for mesochaeta a7 on abd.III which is ciliated in the examined specimens. Abd.IV ( Fig. 6 View Figure ) with the same dorsal chaetotaxy as described for L. pallidus in Hüther (1971)  ; on trichobothrial complex chaeta D1p two times longer than chaetae C1p and T3 ( Fig. 7 View Figure ); one female from sample LP380 with one extra accessory chaeta of trichobotrium T2 located between chaetae m and a only on the left side of the body. Abd.V dorsal chaetotaxy as in Fig. 8 View Figure .

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 View Figure ). 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. pallidus  by Hüther (1971: pg. 164) and Gisin (1965: Fig. 1p View Figure ), the presence or absence of dorsal cephalic macrochaeta A 3 cannot 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 A 3 and its dorsal head macrochaetae formula can therefore be described as A 0 A 2a A 2 S 3 Pa 5. It is noteworthy to mention, that the figure of dorsal head of L. pallidus  as provided by Fjellberg (2007: Fig. 79M) erroneously misses macrochaetae A 2 and A 2a (A. Fjellberg pers. comm.).

HNHM

Hungarian Natural History Museum (Termeszettudomanyi Muzeum)

Kingdom

Animalia

Phylum

Arthropoda

Class

Collembola

Order

Collembola

Family

Entomobryidae

Genus

Lepidocyrtus

Loc

Lepidocyrtus pallidus Reuter, 1890

Mateos, Eduardo & Winkler, Daniel 2018

2018
Loc

L. isabellae

sensu Winkler 2017

2017
Loc

L. tomosvaryi

sensu Winkler & Traser 2012

2012
Loc

L. serbicus

sensu Gruia & Popa 2005

2005
Loc

L. serbicus

sensu Gruia & Popa 2005

2005
Loc

L.

sensu Traser 2000

2000
Loc

L. arrabonicus

sensu Traser 2000

2000
Loc

L. fimicolus

sensu Mari-Mutt 1988

1988
Loc

L. weidneri sensu Hüther (1971)

sensu Huther 1971

1971
Loc

L. weidneri

sensu Huther 1971

1971
Loc

L. pallidus sensu Hüther (1971)

sensu Huther 1971

1971
Loc

L. pallidus

sensu Huther 1971

1971
Loc

L. cf. pallidus

sensu Huther 1971

1971
Loc

L. pseudosinelloides

sensu Gisin 1967

1967
Loc

L. pseudosinelloides

sensu Gisin 1967

1967