Acalitus brevitarsus (Fockeu, 1890)

Type data. Alnus glutinosa (L.) Gaertn. ( Betulaceae); France.

Host plant records from Latvia. Alnus glutinosa (L.) Gaertn., Alnus incana (L.) Moench. ( Betulaceae) Relation to plant host. Gall-making, erineum on under leaf surface (Skoracka et al. 2005).

Bibliographical records from Latvia. Aceria brevitarsus — Shevchenko & Rupais 1964; Rupais 1976b; Eriophyes brevitarsus — Eglītis 1956; Bērziņš 1970b; Plīse 2007.

Distribution in Latvia. Reported to be frequently abundant by Rupais (1976b).

Acalitus calycophthirus (Nalepa, 1891)

Type data. Betula pendula Roth. (Betulaceae); Italy.

Host plant records from Latvia. Betula pendula Roth., Betula pubescens Ehrh. (Betulaceae) .

Relation to plant host. Bud gall-making (Hellrigl 2003).

Bibliographical records from Latvia. Aceria calycophthira — Rupais 1976 a, 1976b, 1999; Plīse 2007; Eriophyes calycophthirus — Shevchenko & Rupais 1964; Eriophyes rudis — Eglītis 1956, 1957; Eriophyes rudis calycophthirus — Eglītis 1956 .

Distribution in Latvia. Frequently abundant according to Rupais (1976 a, 1976b).