Coreomyces corixae Thaxt.

MB#183819

Fig. 4G

Proceedings of the American Academy of Arts and Sciences 38: 56 (Thaxter 1902: 56, as corisae). –

Type: “ On inferior surface of abdomen of Corisa Kennicottii Uhler, Arlington, Mass ”; FH. [USA] [this is the type according to Tavares 1985 and the host is Hesperocorixa kennicotti (Uhler)]

Coreomyces italicus Speg. (Spegazzini 1918: 321) [MB#192011]

Diagnostic features

Cells I and II 1.5–2 times as long as broad. Terminal cell (III) flattened. [Detailed descriptions: Thaxter 1908; Majewski 1994b; Santamaria 2003]

Distribution and hosts

This species has been reported on Corixidae (Hemiptera) of the genera Callicorixa White, 1873, Corixa Geoffroy, 1762 (= Corisa), Cymatia Flor, 1860, Hesperocorixa Kirkaldy, 1908, Micronecta ? Kirkaldy, 1897 (Lee et al. 2008), and Sigara from Europe: Bulgaria, France, Germany, Hungary, Italy, Poland, Romania, Spain; America: Chile, USA; and Asia: China, Indonesia, Japan, Taiwan (Majewski 2008). Recently reported from Denmark, Sweden, Turkey (Sundberg 2018), and Slovenia (Rossi & Christian 2020).

Collections examined from Denmark

On Sigara distincta (Fieber, 1848) . (Heteroptera Corixidae)

DENMARK – Lolland, Falster, Møn (LFM) • Jydelejet, Møns Klint; 54°59.127′ N, 12°31.517′ E; UA49; 12 May 2018; JP 1198; M. Holmen det.; ZMUC C-F-123723 . – Vestjylland (WJ) • Simmelmose; 55°46.299′ N, 9°3.519′ E; NG08; 2 Jun. 2019; JP 1528; M. Holmen det.; ZMUC C-F-124283 • ibid.; JP 1529; M. Holmen det.; ZMUC C-F-124286 • ibid.; JP 1530; M. Holmen det; ZMUC C-F-124288 .

Remarks

This species is very common, although according to Majewski (1994b) less frequent than C. macropus which very often coexists on the same host.