Porrhomma altaica Růžička 2018
- Dataset
- A review of the spider genus Porrhomma (Araneae, Linyphiidae)
- Rank
- SPECIES
- Published in
- Růžička, Vlastimil (2018): A review of the spider genus Porrhomma (Araneae, Linyphiidae). Zootaxa 4481 (1): 1-75, DOI: 10.11646/zootaxa.4481.1.1
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Linyphiidae
- genus
- Porrhomma
- species
- Porrhomma altaica
biology_ecology
Ecology. Collected at an altitude of 2200 – 2400 m a. s. l. Note. All records of P. pallidum in Altai Mountains are misidentification and actually refer to P. altaica new species.
description
Global distribution. Known only from the Altai Mountains, Asia (Fig. 8).
description
Male paratype (from Altai Mts., Gor ̓ ky Belok Mt. Ridge, 26 Jun 2011): A palp (Fig. 7). Female paratype (together with holotype): Carapace width 0.63 mm, Fe without dorsal spines, Fe I with one prolateral spine. Ti I with one prolateral and one retrolateral spine, Ti II with one retrolateral spine. Mt I / CW = 1.11, Tm Mt I = 0.46. Spermathecae start at the midway of the ascending part of copulatory ducts. Main sacks are in contact and directed to the abdomen. They end at the base of appendices in the caudal view. Appendices are oriented towards the abdominal wall (Figs. 6 C – F). Variation. Ƌ ♀. Carapace width 0.63 – 0.74 mm. One dorsal spine on Fe I sometimes on one side only. Mt I / CW = 1.01 – 1.13, Tm Mt I = 0.40 – 0.46 (n = 3).
etymology
Etymology. The specific name is derived from the Altai Mountains. Diagnosis. This new species shares the following characters with the species P. egeria, P. campbelli and P. terrestre: embolus is short (reaching to the tip of AP) and vulva is of the most simple type (spermathecae start at the midway of the ascending part of the copulatory ducts). It can be distinguished from P. egeria and P. campbelli by absence of femoral spines and the form of AP, and from P. terrestre by size (CW> 0.60). Description. Male holotype (from Altai Mts., Azutau Ridge, 10 Jul 1997). Carapace yellow-brown, 1.03 mm long, 0.74 mm wide, eyes somewhat reduced, PME – PME = 1.4 (Fig. 6 A). Abdomen greyish-brown. Fe without dorsal spines, Fe I with one prolateral spine. Ti I with one prolateral and one retrolateral spine, Ti II with one retrolateral spine. Mt I / CW = 1.04. Embolus short with a narrow velum, AP indicates the form of a bird head (Fig. 6 B).
Name
- Homonyms
- Porrhomma altaica Růžička 2018