{"id":7316,"date":"2026-06-09T13:50:09","date_gmt":"2026-06-09T13:50:09","guid":{"rendered":"https:\/\/pawel.stefanoff.pl\/bugs\/?p=7316"},"modified":"2026-07-22T19:03:59","modified_gmt":"2026-07-22T19:03:59","slug":"2026-06-double-life-of-bromius-obscurus-es","status":"publish","type":"post","link":"https:\/\/pawel.stefanoff.pl\/bugs\/es\/posts\/2026-06-double-life-of-bromius-obscurus-es\/","title":{"rendered":"Costureras de hojas y hembras independientes: La extraordinaria doble vida del Bromius obscurus"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Les presento al <em>Bromius obscurus<\/em>, un escarabajo de las hojas fascinante que tiene el honor de ser el \u00fanico representante de su g\u00e9nero. Descrita por primera vez por el legendario taxonomista Carlos Linneo en 1758, esta especie hol\u00e1rtica se distribuye ampliamente por Norteam\u00e9rica, Europa y Asia. Los adultos dejan una firma inconfundible en el dosel del bosque: muerden las hojas creando ranuras largas y lineales que recuerdan al delicado punto de cadeneta, lo que puede hacer que el follaje muy da\u00f1ado parezca aut\u00e9ntico encaje. Su ciclo vital se divide entre dos mundos completamente opuestos. Mientras los adultos viven sobre el suelo aliment\u00e1ndose de las hojas de la vid, las rosas y el epilobio, sus larvas habitan en la oscuridad subterr\u00e1nea, excavando t\u00faneles y royendo los sistemas radiculares. Curiosamente, las poblaciones europeas de este escarabajo son completamente partenogen\u00e9ticas\u2014lo que significa que las hembras se reproducen y ponen huevos viables sin necesidad de machos\u2014, mientras que las poblaciones norteamericanas se reproducen sexualmente. Me cruc\u00e9 con este escarabajo tan singular e hist\u00f3ricamente significativo en varias ocasiones mientras recorr\u00eda el norte de Suecia en junio de 2026.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les presento al Bromius obscurus, un escarabajo de las hojas fascinante que tiene el honor de ser el \u00fanico representante 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