Protanura papillata Cassagnau & Delamare Deboutteville, 1955

Smolis, Adrian, Skarżyński, Dariusz, Kahrarian, Morteza & Kaprus’, Ighor J., 2016, Redescription of Protanura papillata Cassagnau & Delamare Deboutteville, 1955 (Collembola, Neanuridae, Neanurinae), with new records from Middle East, and with supplemented diagnosis and key to the genus, Zootaxa 4092 (2), pp. 293-300 : 295-298

Protanura papillata Cassagnau & Delamare Deboutteville, 1955

Figs 1–16 , Tab.1

Protanura papillata Cassagnau et Delamare Deboutteville, 1955: 374 .

Type material. Lectotype: juvenile on slide, Lebanon, Ouasa el Bechane, ex soil, 10.XI.1951, coll. Museum National ďHistoire Naturelle, Paris.

Other material. 2 females and 4 males on slides, Israel, Nahal Keziv, Quercus calliprinos forest, litter, N slope, 16.II.1999, leg. T. Pavliček. on slides; 4 females and 5 males on slides, Iran, Kermanshah area, Halashi county, 1600 m a.s.l., litter in oak forest, 15.II.2014, leg. M. Kahrarian; 3 females, male and 2 juveniles on slide, Iran, Kermanshah area, Ravansar, litter in willow shrubs, 20.I.2014, leg. M. Kahrarian.

Diagnosis. Habitus typical of the genus Protanura . Dorsal tubercles present and well developed. Colour of body bluish-grey, 2+2 medium dark pigmented eyes. Buccal cone short and wide, labrum non ogival with formula of chaetotaxy: 4/2, 5, 4. Maxilla massive with 2 dentate lamellae and two apical teeth. Mandible strong with 7 teeth. Head with chaetae A, B, C, D and E. Chaeta O absent. Tubercles Cl and Af separate. Tubercle Cl with chaetae D. Tubercles Dl and (L+So) on head with 4 and 9 chaetae respectively. Tubercles De on th. II and III with 2–3 and 3–4 chaetae respectively. Tubercles L on abd. III and IV with 3 and 6 chaetae respectively. Abd. IV with 7 tubercles, tubercles Di fused along midline. Tibiotarsi with chaetae B4 and B5 short.

Redescription. Body length (without antennae): 0.95–1.95 mm (lectotype 1.2 mm). Body bluish-grey. 2+2 medium dark pigmented eyes ( Fig. 1 ).

Types of dorsal ordinary chaetae. Macrochaetae Ml relatively long and thickened, almost cylindrical, straight, narrowly sheathed, feebly serrated, apically pointed ( Figs 1 , 11, 16 ); macrochaetae Mc and Mcc thickened, straight and pointed; mesochaetae and microchaetae short, thin, feebly serrated and pointed.

Head. Labrum non ogival, with ventral sclerifications as in Fig. 2 . Labrum chaetotaxy 4/2, 5, 4; 5 labral chaetae in middle row tiny and without chaetopores ( Figs 3–5 ). Labium with four basal, three distal and four lateral chaetae, two relatively large papillae x present ( Fig. 6 ). Mandible strongly developed with 3 basal and 4 apical teeth ( Figs 7–8 ). Maxilla massive with two dentate lamellae, maxillary capitulum with two apical teeth ( Figs 9–10 ). Chaetotaxy of antennae as in Tab. 1 c and Figs 12–15 . Ant. IV with broad-based, weakly trilobed apical vesicle ( Figs 13–14 ). S-chaetae of ant.IV of medium length, subequal, cylindrical and moderately thickened ( Fig. 15 ). Sensillum sgd shifted towards midline of ant. IV. Sensillum sgv slightly curved and shorter than nearby chaeta vi ( Fig. 12 ). Chaetotaxy of head as in Tab. 1 a, b, and Figs 1, 6 . Chaeta D connected with tubercle Cl. Tubercle Dl with 4 chaetae, chaetae Dl2 and Dl3 absent( Fig. 1 ). Tubercle (L+So) with 9 chaetae, chaeta So2 absent, chaetae So3 and So6 as Mcc. Elementary tubercles BE and CD present. Chaeta A distinctly shorter than B.

Thorax, abdomen, legs. Body s-chaeta thin and smooth, shorter than nearby macrochaetae ( Figs1 , 11 ). Chaetotaxy of th. and abd. as in Tab. 1 d and in Figs 1 , 11 . Tubercles Di on th. I differentiated. Chaetae De 2 on th. II and De 3 on th. III present or absent. Chaetae De 2 on th. II–III and De 3 on th. III free and not connected with tubercle De. Chaetae De 2 and De 3 on abd. I–III within tubercle De ( Fig. 1 ). Line of chaetae De 1–chaeta s not perpendicular to the dorsomedian line on abd. I–III. Furca rudimentary without microchaetae. Tubercles Di on abd. IV fused along midline. Tubercles Di on abd. V fused, with chaetae Di 2 as Mc or Mcc, chaetae Di 3 as Mcc or mi ( Fig.11 ). Chaetae L' on abd. V absent. No cryptopygy. Chaetotaxy of legs as in Tab. 1 d.

Discussion. P. papillata belongs to the pseudomuscorum - papillata - lutea - deharvengi group (Deharveng 1982), characterized by the presence of 2+2 eyes and separate tubercles Af and Cl on the head. Within this group and the genus, the redescribed species is unique in having a high number of labral chaetae and fused tubercles Di on the fourth abdominal segment. In general appearance (body colour, shape of maxillae and dorsal macrochaetae, chaetotaxy of antennae and abdominal segments), P. papillata resembles P. deharvengi , the species known to date from Morocco. Differences between them and other species of the genus are summarized in the key presented below.

Variability. The number of ordinary chaetae De on th. II–III is variable within the examined material.

Figures

FIGURES 1 – 10. P. papillata: 1, dorsal and lateral chaetotaxy of head, thorax and first abdomen; 2, ventral sclerifications of labrum (lectotype); 3, apical part of labrum; 4, chaetotaxy of labrum; 5, labral chaetae of middle row; 6, chaetotaxy of labium and group Vi (lectotype); 7, mandible; 8, mandible; 9, maxilla, ventral view; 10, maxilla, dorsal view.

FIGURES 11 – 16. P. papillata: 11, dorsal chaetotaxy of abdomen IV – VI; 12, ventral chaetotaxy of antenna III (lectotype); 13, apical vesicle, ventral view (lectotype); 14, apical vesicle, dorsal view (lectotype); 15, dorsal chaetotaxy of antennae III – IV (lectotype); 16, chaeta Di 1 of abdomen V (lectotype).

Tables

TABLE 1. Chaetotaxy of P. papillata:

Tubercle	Number of chaetae	Types of chaetae	Names of chaetae
Cl	6	Ml Mcc	F D, G
Af	8	Ml Mc Mcc	B A C, E
Oc	3	Ml Mc mi	Ocm Ocp Oca
Di	2	Mc Mcc	Di1 Di2
De	2	Ml Mcc	De1 De2
Dl	4	Ml Mcc Mcc or mi	Dl1, Dl5 Dl4 Dl6
(L+So)	9	Ml Mcc me or mi	L1, L4, So1 L2, L3, So6, So5 So3–4