物种评估与保护

Iris polystictica

Source:IUCN

Taxonomy

Taxonomy in detail

Scientific name

Authority

Synonyms

Common names

Taxonomic sources

Identification Information

Taxonomic notes

Assessment Information

IUCN Red List Category and Criteria: Data Deficient ver 3.1
Assessment language: English
Year published: 2020
Date assessed: 2018-07-03 00:00:00 UTC

Assessment Information in detail

Previously published Red List assessments

Regional assessments

Assessor(s)

Reviewer(s)

Contributor(s)

Facilitator(s) / Compiler(s)

Partner(s) / Institution(s)

Authority / Authorities

Justification

Iris polystictica is a widespread species adapted to many different habitats. This species is historically, and currently, listed in many Red Data Book of the Russian Federation, however, no real information on population or habitat trends are reported. Its wide extent of occurrence of about 8,800,000 km² may qualify this species as Least Concern, but all the information within the regional Red Data Books and local situations of habitat degradation suggests a more cautious assessment. Because of a lack of solid information on its conservation status, this species is cautiously assessed as Data Deficient, but further updates are encouraged.

Geographic Range

Native

Extant (resident)

Extant

Number of locations

Geographic Range in detail

FAO Fishing Areas

Estimated area of occupancy (AOO) (km²)

Continuing decline in area of occupancy (AOO)

Extreme fluctuations in area of occupancy (AOO)

Estimated extent of occurrence (EOO) (km²)

Continuing decline in extent of occurrence (EOO)

Extreme fluctuations in extent of occurrence (EOO)

Continuing decline in number of locations

Extreme fluctuations in the number of locationsN

RANGE DESCRIPTION

Iris polystictica is a wide spread species, distributed from East Europe to West China and Mongolia (Ehrmann 2002, Battiston et al. 2010, Zhu et al. 2012). In the Russian Federation it is reported from Saratov, Volgograd, Rostov, Astrakhan, Omsk and Novosibirsk Oblasts, as well as and Krasnodar and Altai Krais (Shcherbakov et al. 2013). Its type locality in Dauria, Siberia, represents its easternmost and northernmost locality of distribution; the actual presence of this species in that area needs to be now confirmed. Even if, at genus level, this mantis is easy to be identified, at species level there are some taxonomic problems especially regarding the Eastern and Southern Asian species and subspecies; in these areas the collecting records need to be verified. The exact western boundary is also unclear. The extent of occurrence is about 8,800,000 km².

Population

Current population trend

Unknown

Number of mature individuals

Population severely fragmented

Continuing decline of mature individuals

Population in detail

Extreme fluctuations

No. of subpopulations

Continuing decline in subpopulations

Extreme fluctuations in subpopulations

All individuals in one subpopulation

No. of individuals in largest subpopulation

Description

Population trends are unknown. This species is generally rarely encountered in nature (e.g. 1 specimen per 100-200 m² in Saratov Oblast, Russia: Anikin in: Shlyakhtin, 2006), probably because it is cryptic when hidden in the vegetation and probably more active during the night, but also as fragmented or low-density populations are expected. During the summer of 2012, a population explosion was observed in Pavlodar Oblast, Kazakhstan, when, in a short time period, over 200 specimens were recorded at the collection point (Shcherbakov et al. 2013). This was probably the result of the unusually high summer temperatures in the region, showing that climate plays an important role in the population trends of this species.

Habitat and Ecology

System

Terrestrial

Number of mature individuals

Continuing decline in area, extent and/or quality of habitat

Generation length (years)

Congregatory

Movement patterns

Habitat and Ecology in detail

Habitat and Ecology

Iris polystictica is a generalist mantis which can be observed on bushes or dry grasses in the Mediterranean area (Battiston et al. 2010) but, in the Russian Federation, may occur also in intact mixed grass steppe communities, semi-deserts and deserts (Shcherbakov et al. 2013).

Classification scheme

Habitats	Suitability	Major importance

Threats

Use trade

There is no information available.

Residential & commercial development

Agriculture & aquaculture

Energy production & mining

Transportation & service corridors

Biological resource use

Human intrusions & disturbance

Natural system modifications

Pollution

Geological events

Climate change & severe weather

Threats in detail

Threats

The threats for this species are not well known. However, in some parts of its distribution habitat degradation (steppe fires, overgrazing, plowing, forest destruction and the use of pesticides) is generally reported as a threat in the Red Data Books.

Classification scheme Threats

title	scope	timing	score	severity

Use trade

There is no information available.

Text summary

Text summary in detail

Conservation Actions Information

This species is included in the regional Russian Red Data Books of Saratov Oblast ("rare", Anikin in: Shlyakhtin 2006), Novosibirsk Oblast ("rare", Sergeev 2008), the Republic of Crimea ("rare", Gorochov in: Alyomov et al. 2015), Omsk Oblast ("declining", Sidorov & Kassal in: Antipova et al. 2015), Krasnodar Krai ("EN B1ab(iii)+2ab(ii,iii)", Popov, Knomitsky & Shchyurov in: Zamotajlov et al. 2017), and protected both at individual level and inside protected areas.

It is also included in the Red Data Book of Ukraine, as "rare" (Pushkar and Ermolenko in: Akimov 2009).