Willowsia nigromaculata ( Lubbock, 1873 )

Cipola, Nikolas G. & Katz, Aron D., 2021, Morphological and molecular analysis of Willowsia nigromaculata (Collembola, Entomobryidae, Entomobryinae) reveals a new cryptic species from the United States, European Journal of Taxonomy 739 (1), pp. 92-116 : 97-104

publication ID

https://doi.org/ 10.5852/ejt.2021.739.1269

publication LSID

lsid:zoobank.org:pub:4C7F00E0-9567-4E1D-8CAB-AB3724537DC9

DOI

https://doi.org/10.5281/zenodo.4615161

persistent identifier

https://treatment.plazi.org/id/03F787DF-1D08-D96C-FD94-6BBA87B6FA8C

treatment provided by

Plazi

scientific name

Willowsia nigromaculata ( Lubbock, 1873 )
status

 

Willowsia nigromaculata ( Lubbock, 1873)

Figs 2–7 View Fig View Fig View Fig View Fig View Fig View Fig , 10–11 View Fig View Fig ; Tables 2–3 View Table 2 View Table 3

Seira nigromaculata Lubbock 1873: 146 , Great Britain (orig. descr.).

Willowsia nigromaculata – Shoebotham 1917: 432 (comb.). — Zhang et al. 2011 (descr.).

Type species

Seira nigromaculata Lubbock, 1873 .

Diagnosis

Body with pigments laterally on head to Abd III, and spots on Abd IV, femur and tibiotarsus ( Fig. 2 View Fig ); head mac S0 absent, Ps3 mes and Ps5 mac present; sublobal plate with 2 inner appendages ( Fig. 5E View Fig ); Th II–Abd IV formula with 9,8|3,3,3+7,7+14 mac, p2a rarely present on Th III ( Fig. 6A–C View Fig ); manubrium dorsally with 7 lateral chaetae abruptly acuminate at the tip, manubrial plate with 3–4 chaetae, 1 mac ( Fig. 7G–H View Fig ).

Material examined

FRANCE • 2 ♂♂, 5 ♀♀, 1 juvenile on slides, 7 specimens in alcohol; Paris, National Museum of Natural History, Department de Systematique et Évolution; 48°50′30.0″ N, 02°21′33.1″ E; in laboratory benchtop; 1 Jun. 2016; VD Tarli leg.; INPA GoogleMaps .

Description

LENGTH. Total length (head + trunk) of specimens 1.51–1.85 mm (n = 3). Specimens pale yellowish white with violet pigments on Ant II to Ant IV, head laterally, margins of Th II–Abd II, Abd III with one transverse band that expands laterally, Abd IV dorsally with one irregular lateral spot, irregular spots on

dorsoventral plate and posterior border; distal half of Abd V to VI, distal femur and tibiotarsus medially; eyepatches black ( Fig. 2 View Fig ).

HEAD. Antennal ratio as I: II: III: IV = 1: 1.83–2.00 1.68–2.12: 1.81–2.36 (n = 3). Ant IV not annulated, with apical bulb bilobed and sometimes retraticle. Five interocular chaetae (q, v, p, r, t); head dorsal macrochaetotaxy ( Fig. 5B View Fig ) with 5 ‘An’ (An1a–3), 4 ‘A’ (A0, A2–3, A5), 3 ‘M’ (M1–2, M4), 6 ‘S’ (S2– 6), 1 ‘Ps’ (Ps5), 5 ‘Pa’ (Pa1–5), 2 ‘Pm’ (Pm1, Pm3), 5 ‘Pp’ (Pp1–5), and 2 ‘Pe’ (Pe2–3) mac; An2a?, A1, A4? mic present. Maxillary palp with t.a. smooth and b.c. weakly striated, thicker and 1.12 longer than t.a.; sublobal plate with 2 inner (sb.2–3) and 1 outer (sb.4) smooth appendages, sb.2 smaller and sb.4 minute ( Fig. 5E View Fig ). Ventral chaetotaxy with about 68 ciliate chaetae, 36 thin of differents sizes, 31 normal and subequal in length and 1 b.c., cephalic groove with 6 chaetae; postlabial formula with 4 (G1–4), 4 (X, X2–4), 4 (H2–4), 4 (J1–4), 2 (X’, X4’) chaetae ( Fig. 5G View Fig ).

THORAX CHAETOTAXY ( Fig. 6A View Fig ). Th II, anterior collar with numerous chaetae; a, m and p series with 1 (a5), 1 (m4) and 7 (p1–5) mac, respectively. Th III, a, m and p series with 2 (a4, a6), 4 (m5–7) and 5–6 (p1–3, p5–6) mac, respectively, p2a mac rarely present; laterally numerous mes. Ratio Th II: III = 1.48–1.30: 1 (n=3).

ABDOMEN CHAETOTAXY ( Fig. 6B–F View Fig ). Abd I, m series with 3 mac (m2–4) subequal in length. Abd II, a and m series with 1 (a2) and 3 (m3–3e, m5) mac, respectively; a5 and m2 bothriotricha with 9 and 6 accessory chaetae, respectively ( Figs 3C View Fig , 6D View Fig ). Abd III, a, m and p series with 3 (a2–3, a7), 4 (m3, am6, pm6, m7) and 3 (p6, p7–7i) mac, respectively; m2 bothriotrichum with 3 accessory chaetae and a5 and m5 bothriotricha with 15 accessory chaetae between them ( Fig. 6E View Fig ). Abd IV, A to T series with 7 mac (A3–4, A6, B4–6, C1) and E to Fe series with 14 mac (E2a–3, E4p, F1–3p, Fe3–5); T2 and T4 bothriotricha with 2 mic and 8 accessory chaetae between them ( Fig. 6F View Fig ); 2 sens type I (as, ps), 4 sens type II, and 13 posterior chaetae of different sizes. Abd V a, m, pa and p series with 1 (a5), 4 (m2–3, m5–5e), 1 (p6ai) and 5 (p1, p3–6) mac, respectively. Ratio Abd III: IV = 1: 3.61–4.14 (n= 3).

LEGS. Subcoxa I with 3 chaetae and 2 psp; subcoxa II with an anterior row of 7 chaetae and about 16 anterior chaetae, posterior row of 3 chaetae and 2 psp; subcoxa III with one row of 7 chaetae, about 16 anterior chaetae and 2 posterior psp ( Fig. 7A–C View Fig ). Trochanteral organ with 12–16 spine-like chaetae ( Fig. 7D View Fig ). Ratio unguis: unguiculus = 1: 0.52. Tibiotarsal smooth chaeta 1.09 the length of unguiculus; tenent hairs 0.97 the length of unguis.

COLLOPHORE. Anterior side with about 20 chaetae, 5 mac and 3 mes ciliate and abruptly acuminate at the tip, and 13 thin chaetae weakly ciliate; posterior side with 8 chaetae (1 unpaired) weakly ciliate and 2 distally thicker; lateral flap with 3 smooth chaetae and 9 chaetae weakly ciliate ( Fig. 7F View Fig ).

FURCULA. Manubrium ventrally with 4 subapical chaetae of the same length and 14–16 apical chaetae, 6 inner chaetae smaller, others subequal ( Figs 4C View Fig , 7I View Fig ); dorsally with one lateral row of 7 ciliate chaetae abruptly acuminate at the tip, 3 mac and 4 mes (1 basal and 1 antero-subapical); manubrial plate with 3–4 ciliate chaetae of different sizes (1 mac abruptly acuminate at the tip) and 2 psp ( Figs 4A–B View Fig , 7G–H View Fig ).

DNA Barcodes

GenBank KY468311 View Materials ; Teillet, France ( Ding et al. 2018). GenBank MG032239 View Materials , MG036766 View Materials , MG039377 View Materials ; Toronto, Canada ( deWaard et al. 2019).

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Entognatha

Order

Collembola

Family

Entomobryidae

SubFamily

Entomobryinae

Genus

Willowsia

Loc

Willowsia nigromaculata ( Lubbock, 1873 )

Cipola, Nikolas G. & Katz, Aron D. 2021
2021
Loc

Willowsia nigromaculata

Shoebotham 1917: 432
1917
Loc

Seira nigromaculata

Lubbock J. 1873: 146
1873
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF