Gracilentulus sarmaticus, Shrubovych, Julia & Szeptycki, Andrzej, 2008

Shrubovych, Julia & Szeptycki, Andrzej, 2008, Gracilentulus sarmaticus sp. nov. from Southeast Ukraine (Protura: Acerentomidae, Berberentulinae), Zootaxa 1898, pp. 34-40: 34-39

publication ID 10.5281/zenodo.184476

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scientific name

Gracilentulus sarmaticus

sp. nov.

Gracilentulus sarmaticus  sp. nov.

Material examined. Type material. Holotype, female (nr 16.1 a), litter and soil in bushes on the western bank of the river Ingul, Mykolajivski district, Ukraine, 5. V. 2006, leg. I. Kaprus. Paratypes: 16 females and 1 male, the same data as holotype. Other materials: 1 maturus junior and 2 larvae II, the same data as holotype, 2 females and 1 maturus junior, soil on steppe meadow in valley of river Velyka Korabelna, near Blagodatne, Mykolajivski district, Ukraine, 3. V. 2006, leg. I. Kaprus.

Holotype, 13 females and 1 male (slides nr 16.1–16.9) and other materials are deposited in the collection of SNHM; 3 females (slides nr 16.10 and 16.11) in the collection of ISEA.

Figs 6View FIGURES 1 – 9 — paratype 16.1 b, others—holotype.

All specimens are mounted as microscopic slides in the medium of Faure ( Dunger & Fiedler 1989).

Description. Head setae short, additional seta absent, postpseudocular seta present ( Fig. 1View FIGURES 1 – 9). Dorsal side with 3 + 3 thin, linear microchaetae, ventral side with 1 + 1 such microchaetae. Rostrum short. Pseudoculus slightly elongated, with short lever, PR 14–16 ( Fig. 4View FIGURES 1 – 9). Maxillary gland short, with large, nearly semiglobular calyx, and simple, short and relatively thick posterior filament with irregular posterior dilation, CF 5–6 ( Fig. 3View FIGURES 1 – 9). Maxillary palps short; sensilla equal, short, thin and pointed, nearly seta-like ( Fig. 2View FIGURES 1 – 9). Labial palps with no terminal tuft, with three setae and short, sausage-like sensillum ( Figs. 6, 7View FIGURES 1 – 9). Inner margin of labium smooth.

Figs 10, 15 and 16View FIGURES 10 – 19 — paratype 16.1 b, 11 and 13 — paratype 16.1 c, others—holotype. Arrows—pores.

Main setae on nota strongly differentiated ( Fig. 10View FIGURES 10 – 19). Setae M and A 2 on meso- and metanotum short, thin, hair-like. Seta P 2 on mesonotum 1.5–2.3 times longer than P 1. Accessory setae P 1 a and P 2 a as gemmate microchaetae; P 2 a nearer to P 3 than to P 2; P 5 as small sensillum ( Figs. 11, 13View FIGURES 10 – 19). Seta P 4 a on metanotum as thin, linear microchaeta ( Fig. 13View FIGURES 10 – 19). Mesonotum with pores al and sl, metanotum with pore sl. Setae A 2 on thoracal sterna and M 2 on prosternum as thin, linear microchaetae (shorter than P 4 a on metanotum). Thoracal sterna with no pores.

Figs 22 and 24View FIGURES 20 – 27 — paratype 16.1 c, 26 — paratype 16.3 c, 27 and 28 — paratype 16.2 a, others—holotype.

Foretarsal sensilla a, c, d short and thin ( Fig. 8View FIGURES 1 – 9), d situated close to c (nearly on level of b); b very long (and thicker than the other sensilla), passing base of claw; e, f, g long, thin; t 2 of medium length, relatively thick; t 3 large ( Fig. 5View FIGURES 1 – 9), subequal in length to t 1; a’ of medium length, mostly slightly passing base of t 2, situated on level of t 1; b’ short and thin, situated on level of α 4; c’ of medium length, thin, slightly passing base of claw ( Fig. 9View FIGURES 1 – 9). All sensilla parallel – sided. Seta β 1 short and thin, blunt; δ 5 situated proximally to level of c’, as β 1. Length formula of sensilla: t 1 <t 3 <a’ = b’ <a = c = d = g <t 2 <c’ <f <e << b. Claw with no inner tooth, empodial appendage relatively long. BS 0.4–0.5, TR 3.3–3.9, EU about 0.3.

Urotergite I without P 1 a; P 2 a of same shape as accessory setae on nota; A 5 as a short and thin linear microchaeta. Urotergites II –VI without setae P 1 a and P 3 a; another accessory setae as short and thin linear microchaetae ( Fig. 12View FIGURES 10 – 19). Urotergite VII with 3 + 3 anterior setae (A 2, A 4, A 5) and 8 + 8 posterior setae (seta P 1 a absent, P 3 a present), accessory setae of same shape as on another tergites, but slightly longer ( Fig. 14View FIGURES 10 – 19); seta P 4 a situated close to P 4, of same shape as other accessory setae ( Fig. 15View FIGURES 10 – 19). Pore psm present on urotergites I – VIII, psl on VI and VII, al on II –VII: dorsal to A 5 on urotergites II –VI, ventral to it on VII.

Abdominal legs with 4, 2, 2, setae; apical seta on legs II and III less than half the length of subapical seta. Accessory setae on urosternites I –VII as that on tergites. Lineation of urosternites distinct, connecting line present. Urosternites I –IV with no pores ( Fig. 16View FIGURES 10 – 19). Urosternite V with 1 + 1 pore situated laterally (close to margin of sternite) on anterior line, and single pore situated asymmetrically between setae Ac and A 2 ( Fig. 18View FIGURES 10 – 19). Urosternite VI with 1 + 1 pore situated anterolaterally (as on V), and three pores—two of them are situated asymmetrically on both sides of Ac and the third one, situated asymmetrically, anteriorly to P 1 ( Fig. 17View FIGURES 10 – 19). Urosternite VII with single pore situated medially, more or less in the middle of sternite ( Fig. 19View FIGURES 10 – 19). The distribution of pores is more or less the same in all specimens studied.

Abdominal segment VIII with well developed striate band. Striae on tergite are denser and more differentiated than that on sternite ( Figs. 20, 23View FIGURES 20 – 27). Tergite smooth, sternite with traces of row of small, scattered granules. Pore psm with no surrounding teeth, others pores absent. Comb VIII with straight hind margin, composed of 7–9 (mostly 8) small, more or less regular teeth ( Fig. 25View FIGURES 20 – 27). Hind margin of tergite, sternite and laterotergite smooth. Urosternite VIII mostly with 4 / 2 setae, 1 a variable ( Fig. 22View FIGURES 20 – 27).

Seta 1 a on urotergite IX subequal to seta 1, on X shorter ( Fig. 24View FIGURES 20 – 27). Seta 2 a on urotergites IX and X shorter than the other setae, nearly spine-like. Seta 3 on urotergite X longer and thinner than other setae. Internal anterolateral seta on dorsal lobe of telson distinctly longer than external one ( Fig. 21View FIGURES 20 – 27). Segments IX –XI with no pores. Dorsal lobe of telson with single median pore, ventral lobe with 1 + 1 anterolateral pores. Hind margin of segments IX –XI and telson smooth.

Squama genitalis short ( Fig. 27View FIGURES 20 – 27). Acrostyli subapically situated, elongated, with long terminal “spine” (Fig. 28). Penis with 4 + 4 setae ( Fig. 26View FIGURES 20 – 27).

Body measurements (in Μm):

Variability. Chaetotaxy very variable, in most of specimens some irregularities exist. The following anomalies were recorded in 18 imagines studied: pronotum—asymmetrical lack of seta 1 (1 specimen); mesonotum—asymmetrical lack of A 2 (1 sp-n); urotergite I—asymmetrical lack of A 2 (2 sp-ns); urotergite IIasymmetrical lack of A 1 (1 sp-n); urotergite III—asymmetrical lack of A 1 (1 sp-n), P 2 a asymmetrically in posterior position (1 sp-n); urotergite IV—asymmetrical lack of A 2 (1 sp-n); urotergite V—asymmetrical lack of A 1 (1 sp-n); urotergite VI—asymmetrical lack of A 1 (1 sp-n) and A 4 (1 sp-n); urotergite VII—asymmetrical lack of P 2 (1 sp-n), asymmetrical presence of P 2 a’ (1 sp-n); prosternum—irregular distribution of setae “ P ” (1 sp-n); mesosternum—asymmetrical lack of P 2 (1 sp-n); metasternum—asymmetrical lack of A 4 (1 sp- n); urosternite I—symmetrical lack P 1 a (2 sp-ns); presence of additional seta anteriorly to Ac (1 sp-n); urosternite II—presence of additional seta anteriorly to Ac (2 sp-ns); urosternite III—asymmetrical lack of A 2 (1 sp-n) and P 2 a (1 sp-n); urosternite IV— P 1 a asymmetrically in anterior position (1 sp-n); urosternite VII— P 1 a posterior to P 1 (1 sp-n); urosternite VIII—asymmetrical lack of seta 1 (1 sp-n), asymmetrical (4 sp-ns) and symmetrical lack of 1 a (2 sp-ns); urosternite X—asymmetrical lack of seta 1 (2 sp-ns).

Maturus junior (1 sp-n): urosternite IV—asymmetrical lack of P 1 a.

Larvae II (2 sp-ns)—chaetal variability not observed.

Variability of porotaxy on urosternite V and VII not observed, on VI lack of one pore or different than in the description distribution of pores was observed in single specimens.

Etymology. The species name is derived from the name of the ancient nation of Sarmatians, who were living in the territory around the type locality.

dorsal ventral a. lateral side of tergite in maturus junior invisible b. in maturus junior: Mc

c. in maturus junior: 0

bold —primary and secondary setae normal—tertiary setae

italic —additionary setae


Sudan Natural History Museum