Two new species of Bristletails of the genus Pedetontus Silvestri, 1911 (Microcoryphia, Machilidae) from The Russian far East

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The relatively large Indo-Malayan-Holarctic genus Pedetontus Silvestri, 1911 has so far included 33 described species. The genus has two subgenera: the nominative, Pedetontus s. str., with seven species (6 from North America and one from Kamchatka) and Verhoeffilis Paclt, 1972, with 26 species (three species from North America, 12 from the southeastern Palaearctic and 11 from the Indo-Malayan Region). Both subgenera are distinguished by the presence of two pairs of retractable vesicles on abdominal segments II–VI or II–V, respectively. Two new species of the latter subgenus are described from the Primorsky Territory of the Russian Federation: P. furuhjelmi sp. n., from Furugelm Island, and P. nigrus sp. n., from near Ussuriysk. Both these new species are very close to P. ussuriensis Kaplin, 1980, widespread in the Primorsky Territory, and P. silvestrii Mendes, 1993, from North Korea, but differ well in body length, the relative length of the antennae, the structure of the antennal flagella, the compound eyes, the paired ocelli, the maxillary and labial palps, the sternites, styli and coxites of abdominal segment IX, as well as by the chaetotaxy of the legs and urocoxites IX, and the ovipositor.

Full Text

Restricted Access

About the authors

V. G. Kaplin

All-Russian Institute of Plant Protection

Author for correspondence.
Email: ctenolepisma@mail.ru
Russian Federation, 196608, Saint Petersburg, Pushkin, sh. Podbelskogo 3

References

  1. Каплин В.Г., 1980. Новые виды щетинохвосток (Microcoryphia, Machilidae) с Курильских островов и из Приморского края // Таксономия насекомых Дальнего Востока, Владивосток: Биолого-почвенный институт. С. 3–9.
  2. Каплин В.Г., 2013. Новый вид щетинохвосток рода Pedetontus Silv. (Thysanura, Machilidae) из Таиланда // Энтомологическое обозрение. Т. 92. № 2. С. 348–354. [Kaplin V.G., 2013. A new species of the bristletail genus Pedetontus Silv. (Thysanura, Machilidae) from Thailand // Entomological Review. V. 93. Is. 7. P. 887–892.]
  3. Machida R., 1980. A new species of the genus Pedetontus from Japan (Insecta, Thysanura) // Annotationes Zoologicae Japonenses. V. 53. № 3. P. 220–225.
  4. Mendes L.F., 1981. Sur quelques Microcoryphia de l’Asie orientale: notes et descriptions (Insecta, Apterygota) // Nouvelle revue d’Entomologie. V. 11. № 1. P. 15– 28.
  5. Mendes L.F., 1993. New contribution towards the knowledge of the Nothern Rorean thysanurans (Microcortphia and Zygentoma: Insecta) // Garcia de Orta, Sér. Zool. Lisboa. V. 18. № 1–2. P. 67–78.
  6. Mendes L.F., Gaju-Ricart M., Bach de Roca C., Molero-Baltanás R., 2000. On some Silvestri species of Machilidae (Microcoryphia, Insecta) which types are in the Muséum National d’Histoire Naturelle, Paris. Proceedings of Vth International Seminar on Apterygota, Cordoba 1998 // Pedobiologia. V. 44. № 3–4. P. 268–284.
  7. Paclt J., 1972. Grundsätzliches zur Chorologie und Systematik der Felsenspringer // Zoologischer Anzeiger. V. 188(5–6). P. 422–429.
  8. Silvestri F., 1911. Contributo alla conoscenza dei Machilidae dell’America settentrionale // Bollettino del Laboratorio di zoologia generale e agraria della R. Scuola superiore d’agricoltura in Portici. V. 5. P. 324–350.
  9. Yu D.-N., Zhang W.-W., Zhang J.-Y., 2010. Two new species of the genus Pedetontus (Microcoryphia, Machilidae) from China // Acta Zootaxonomica Sinica. V. 35. № 3. P. 444–450.

Supplementary files

Supplementary Files
Action
1. JATS XML
2. Fig 1. Pedetontus furuhjelmi sp. n., structural details of the female, holotype: 1 – main segment (scapus), pedicle and basal part of the segments of the antennal flagellum; 2 – distal chain of the antennal flagellum; 3 – distal part of the cerci; 4 – compound eyes and paired eyes; 5 – mandibular tentacle; 6 – lower labial palpi; 7 – upper jaw; 8 – pelvis, vertebral column, thigh, shin and foot of the middle leg. The scale is 0.1 mm.

Download (2MB)
3. Fig. 2. Pedetontus furuhjelmi sp. n., structural details of the female, holotype: 1 pronotum; 2 – coxit IX with a neck and anterior gonapophyses; 3 – distal segments of the anterior gonapophysis of the ovipositor; 4 – the same, posterior gonapophysis. The scale is 0.1 mm.

Download (2MB)
4. Fig 3. Pedetontus nigrus sp. n., details of the male's structure, holotype: 1 – distal chain of the antennal flagellum; 2 – apical part of the cercle; 3 – compound eyes and paired eyes; 4 – mandibular tentacle; 5 – mandibular tentacle; 6 – upper jaw; 7 – acetabulum, femur, tibia and the foot of the middle leg; 8 – the basin of the middle leg with a handle. The scale is 0.1 mm.

Download (3MB)
5. Fig 4. Pedetontus nigrus sp. n., details of the male's structure, holotype: 1 – sternite and coxites with grooves and retracted vesicles of the V segment of the abdomen; 2 – tergite of the X segment of the abdomen; 3 – coxite IX with a groove, paramere and penis; coxites VIII with grooves. The scale is 0.1 mm.

Download (2MB)

Copyright (c) 2025 Russian Academy of Sciences