Published April 14, 2020
| Version v1
Dataset
Open
Table 4 in A new species of bristletails of the genus Petrobiellus (Microcoryphia: Machilidae) from Sakhalin
Authors/Creators
Description
Table 4. Main morphological differences between females of the species of Petrobiellus.
| Morphological characters | P. kusakini Kaplin, 1980 | P. curvistylis Uchida, 1954 | P. sachalinensis sp. nov. |
|---|---|---|---|
| General body colour | yellowish | rufous | whitish or slightly yel- lowish |
| Colour of scales on body surface | dark brownish | brownish | whitish or light gray, with several relatively large spots of brown scales |
| Distribution of hypodermal pigment | head, maxillary palps, mandibles, maxillae, thorax and legs highly pigmented | scapus and pedicellus of antenna, trochanter, femur and tibia of all legs with blackish purple pigment | head and tarsi with brown or brown-violet hypoder- mal pigment of weak or medium intensity |
| Colour of paired ocelli | dark, without white bordering | dark | brown, with white bor- dering |
| Shape of paired ocelli | pistiliform, strongly nar- rowed in the middle parts | pistiliform, either of them almost separated in mid- dle into two parts | almost sole-shaped |
| Ratio of length to width of com- pound eye | 1.09 | 1.00–1.02 | 1.13–1.15 |
| Ratios of lengths of apical and pre- ceding articles of maxillary palps | 0.83 | 0.57 | 0.60–0.62 |
| Ratios of lengths of 5th and 4th articles of maxillary palps | 1.20 | 1.10 | 1.04–1.06 |
| Number of spines on 2nd tarsomere | 16–26 | ? | 4–7 |
| Ratio of length of styli to width of coxae | 1.61 | 1.14 | 1.05–1.09 |
| I Ratios of lengths of urosterni- II te and urocoxite VII | 0.32 0.39 0.53 | 0.29 0.52 0.40 | 0.35 0.69 0.67 |
| Ratios of lengths of stylus II (without spine) and urocoxite VII | 0.91 0.77 | 0.77 0.61 | 0.85 0.74 |
| Posterior angle of urosternite II | 128° | 108° | 118° |
| Number of ovipositor divisions | 55 | ? | 52–53 |
Note. Petrobiellus takunagae Silvestri, 1943 is not included in the table due to insufficient data in its original description; the characters distinguishing this species from P. sachalinensis sp. nov. are given in the Comparison section after the description of the new species.
Notes
Published as part of Kaplin, V. G., 2020, A new species of bristletails of the genus Petrobiellus (Microcoryphia: Machilidae) from Sakhalin, pp. 20 in Zoosystematica Rossica (Zoosyst. Rossica) 29 (1) on page 20, DOI: 10.31610/zsr/2020.29.1.17, http://zenodo.org/record/10124220
Files
Files
(3.2 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:5e00bd3e391c9ff7a721faf6b1fce498
|
3.2 kB | Download |
System files
(9.5 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:e4ef0933673c3a660466146da661c367
|
9.5 kB | Download |
Additional details
Identifiers
References
- Kaplin V. G. 1980. New species of bristletails (Microcoryphia, Machilidae) from the Kuril Islands and Primorsky Krai. In: Lehr P. A. (Ed.). Taksonomiya nasekomykh Dal'nego Vostoka [Taxonomy of insects of the Far East]: 3 - 9. Vladivostok. (In Russian).
- Uchida H. 1954. Apterygota of the Hachijo-Jima and its adjacent islands. Science Reports of the Faculty of Literature and Science, Hirosaki University, 1 (1): 1 - 17.
- Silvestri F. 1943. Contributto alla conoscenza dei Machilidae (Insecta, Thysanura) del Giappone. Bollettino del Laboratorio di Zoologia, generale e agraria della R. Scuola superiore d'Agricoltura in Portici, 32: 283 - 306.