Aradus betulae (Linnaeus 1758)

Bai, X., Heiss, E. & Cai, W., 2010, New records, a synonymy and a new species of Aradus Fabricius, 1803 (Hemiptera: Heteroptera: Aradidae) from China, Zootaxa 2388 (1), pp. 59-68 : 60

publication ID	https://doi.org/ 10.11646/zootaxa.2388.1.5
DOI	https://doi.org/10.5281/zenodo.5315050
persistent identifier	https://treatment.plazi.org/id/039A87D7-FFAF-FFAC-FF28-7255FB8FFAEB
treatment provided by	Felipe
scientific name	Aradus betulae (Linnaeus 1758)
status

Treatment

(Photo 1)

Material examined: 1♀ with following labels attached: Inner Mongolia / Hulunbaier, Genhe // 24 V 1983 / Guoxue Zhang lg. // Aradus / betulae (Linnaeus) / det. E. Heiss 2009 ( CAU). The specimen is damaged and lacks the antennal segments III+IV at left, II–IV at right and left fore- and middle legs.

Hsiao 1964 and Liu 1981a reported A. betulae from NE China. However, the photos of Liu 1981a (table 32: 323 ♂ and 326 ♀) showed,that this species is not betulae sensu Linnaeus and following authors. Vásárhelyi 1988 recognised the difference and described this taxon upon specimens from Tianjin as Aradus chinensis . Heiss 2007a discovered that chinensis shares all essential characters, e.g., habitus, structure of antennae, and male genitalia with hieroglyphicus Sahlberg 1878 , which is widespread from the Russian Far East to Korea and Japan, and synonymised chinensis with the latter. A. hieroglyphicus is already reported from China (NE, NW) by Hsiao 1964 and Liu 1981a (as turkestanicus, see Heiss 2001b) and later confirmed from Sichuan by Heiss 2007a.

This female represents the first confirmed record of betulae from China.

Single females of betulae may be confounded with A. herculeanus Kiritshenko 1913 , which was described from Primorsk Territory of Russian and the Far East of neighbouring NE China. Females of both taxa share a particular character, the posteriorly expanded and prolonged abdomen. However A. herculeanus is generally of larger size, its paranota are more rounded and not angularly expanded laterally (see Kanyukova 1984), its antennae are relatively longer (ratio length of antennae / width of head = 2.5 / 1.9 – 2.0 in betulae ), and its antennal segment II is about 1.2 x as long as the width of the head (1.0 in betulae ). It can be expected that herculeanus will also be recorded from the northeastern provinces of China.