Abstract
The Symphyla of Tibet are studied for the first time. Symphylellamacroporasp. n. and Symphylellazhongisp. n. from southeastern Tibet are described and illustrated. Symphylellamacroporasp. n. is characterized by large, elongated oval openings of the Tömösváry organ with its inner margins covered by minute irregular teeth, rudimentary spined sensory organs present on the dorsal side of most antennal segments, and cerci with numerous long and slightly curved setae. Symphylellazhongisp. n. is characterized by a globular Tömösváry organ with a small and roundish opening, mushroom-shaped sensory organs present on apical antennal segments, and by having tergal processes longer than their basal width with ovoid swollen ends. The newly described species are compared to the morphologically closest congeners: S.javanensis, S.asiatica, S.multisetosa, and S.simplex. A key for 43 species of the genus is also provided.
Highlights
Knowledge of the myriapod class Symphyla from China is poor
All specimens are deposited in the collections of Shanghai Natural History Museum (SNHM), Shanghai, China
Symphylella macropora sp. n. is most similar to S. javanensis Scheller, 1988 from Java in the shape of tergites and processes, leg 12 and sensory organs on antennae. It can be readily distinguished from the latter by the shape of Tömösváry organ, central rod, and the stylus
Summary
It can be readily distinguished from the latter by the shape of Tömösváry organ (oval, openings large and elongated with inner margins covered by minute irregular teeth vs subspherical, diameter of opening about half of the organ in S. javanensis), central rod It is closely related to S. asiatica Scheller, 1971 from Indiaand Sri Lanka in the shape and chaetotaxy of tergites 1–3, leg 12 and the sensory organs on antenna, but distinguished by characters of Tömösváry organ (openings very small in S. asiatica), and the cerci
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