Opilio rossicus, Snegovaya, 2016

Snegovaya, Nataly Yu., 2016, Two New Opilio Herbst, 1798 Species (Arachnida: Opiliones: Phalangiidae) From Caucasus Region, Ecologica Montenegrina 8, pp. 27-33 : 28-30

publication ID

https://doi.org/ 10.37828/em.2016.8.3

publication LSID

urn:lsid:zoobank.org:pub:7AF86E8C-57BF-4232-ADA6-15C5EAF0B53D

DOI

https://doi.org/10.5281/zenodo.12653802

persistent identifier

https://treatment.plazi.org/id/59358575-FF79-4828-92DB-5D6C4814F2D4

taxon LSID

lsid:zoobank.org:act:59358575-FF79-4828-92DB-5D6C4814F2D4

treatment provided by

Felipe

scientific name

Opilio rossicus
status

sp. nov.

Opilio rossicus View in CoL , sp. n.

( Figs. 2-19 View Figures 2-19 )

Material: Holotype ♂ , Paratypes 7♂, 1♀, Russia, Rostov region, Orlov district, vicinity of Manich settlement, Manich-Gudilo Lake Valley , 2- 9.10.2009, leg. Perepechaenko V .L.

Small size harvestman, 2.9 long, 1.6 wide. Body surface covered with trasverse rows of denticles along margins of tergites. Color of the body light-brown with dark-brown dorsal part. Group of denticles are situated in front of eye mound. Eye mound low, typical for Opilio genus, with 3-4 denticles on each side. Legs short, femora I short (1.75), cylindrical, much thicker than other legs, densely covered with transverse rows of denticles ( Table 1).

Pedipalps small, femur dorsally with black-tipped denticles, ventrally and laterally with large denticles, patella dorsally and ventrally with denticles, tibia dorsally and ventrally with several denticles. Pedipalp lengths 1.4+0.25+0.5+0.95 = 3.1. Chelicera small, basal segment dorsally with some denticles. Cheliceral basal segment length 1.1, distal segment 1.1. Penis small with wide base (1.65 long, glans 0.2, stylus 0.08) narrows to glans, wings small size, glans of the penis oval in form with 2 pairs of setae.

Female differs from male by being larger in size, more oval form of the body and less developed denticles on the body and extremities. Female body length 4.8, wide 2.5. Pedipalp lengths 0.9+0.4+0.6+2.4 = 4.3. Cheliceral basal segment length 2.1, distal segment 1.25.

Diagnosis – The new species is closely related to Opilio caucasicus Snegovaya, 2010 and Opilio lederi Roewer, 1911 , but differs from O.caucasicus by the smaller body size, differences in penis structure: Opilio caucasicus has a large glans, significantly wider base and wider wings. From another species O.lederi , the new species differs by the smaller size, form of femur I and details of the penis ( Table 2).

Etymology. The species is named after Russia, the country from where it was discovered.

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Phalangiidae

Genus

Opilio

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF