Literature
- Baymak, D. & S. Kıyak 2022. About of the fauna of Kosovo Heteroptera (Hemiptera) and new faunistical record of Pterotmetus staphyliniformis (Schilling, 1829) [in Turkish] 4 (2: 85-128. Journal of the Heteroptera of Turkey.
- Coulianos, C.-C. 2005. Annotated checklist and distribution of the true bugs (Hemiptera-Heteroptera) of Estonia 54: 136-165. Proceedings of the Estonian Academy of Sciences. Biology and Ecology.
- Fabricius, J.C. 1798. Entomologia systematica emendata et aucta, secundum classes, ordines, genera, species adjectis synonymis, locis, observationibus, descriptionibus. Supplementum Entomologiae Systematicae: 1-572. Proft, Hafniae.
- Gillerfors, G. & C.-C. Coulianos 2005. Fynd av för Sverige nya och sällsynta skinnbaggar (Hemiptera Heteroptera) 126: 215-224. Entomologisk Tidskrift.
- Gulde, J. 1937. Die Wanzen Mitteleuropas. Hemiptera Heteroptera Mitteleuropas. V. Teil, 2. 7. Familie: Lygaeidae: 107-222. Verlag des Internationalen Entomologischen Vereins, Frankfurt am Main..
- Horváth, G. 1883a. Heteroptera Anatolica in regione Brussae collecta enumeravit 7: 21-30. Természetrajzi Füzetek.
- Opinion 798 1966. Lygaeus quadratus Fabricius, 1798 (Insecta, Hemiptera): designation of a neotype under the plenary powers 23: 275-276. Bulletin of Zoological Nomenclature.
- Protić, Lj. 2001a. Catalogue of the Heteroptera fauna of Yugoslav countries. Part Two 39: 1-272. Prirodnjački Muzej u Beogradu, Posebna Izdanja.
- Puton, A. 1886a. Catalogue des Hémiptères (Hétéroptères, Cicadines et Psyllides) de la faune paléarctique. 3me édn: 1-100. Blanc-Hardel, Caen..
- Scudder, G.G.E. & E. Wagner 1964. Lygaeus quadratus Fabricius, 1798 (Insecta, Hemiptera): proposed designation of a neotype under the plenary powers 21: 357-359. Bulletin of Zoological Nomenclature.
- Scudder, G.G.E. 1970a. The world Rhyparochrominae (Hemiptera, Lygaeidae). XI. The Horváth types 62: 197-206. Annales Historico-Naturales Musei Nationalis Hungarici.
- Scudder, G.G.E. 1976b. The World Rhyparochrominae types (Hemiptera: Lygaeidae). XIII. The Stål types 8: 29-35. Entomologica Scandinavica.
- Seidenstücker, G. 1980b. Der Trapezonotus von Brussa (Heteroptera, Lygaeidae) 17: 105-113. Reichenbachia.
- Spuņģis, V. 2009. Fauna of ground bugs (Hemiptera: Lygaeidae) in Latvia 47: 76-92. Latvijas Entomologs.
- Stichel, W. 1959b. Illustrierte Bestimmungstabellen der Wanzen. II. Europa. (Hemiptera-Heteroptera Europae) 4: 225-384. Stichel, Berlin-Hermsdorf.
- Stål, C. 1872c. Genera Lygaeidarum Europae disposuit 29: 37-62. Öfversigt af Kongl. Vetenskaps-Akademiens Förhandlingar.
- Vinokurov, N.N. 1990. True bugs of the genus Trapezonotus (Heteroptera, Lygaeidae) in the fauna of the USSR and Mongolia 11: 70-90. Nasekomye Mongolii.
- Woodroffe, G.E. 1960. The identity of the British Trapezonotus Fieber (Hem. Lygaeidae) 93: 218-224. Entomologist.