{"id":9152,"date":"2026-07-25T15:00:18","date_gmt":"2026-07-25T15:00:18","guid":{"rendered":"https:\/\/pawel.stefanoff.pl\/bugs\/?p=9152"},"modified":"2026-08-15T12:32:17","modified_gmt":"2026-08-15T12:32:17","slug":"2026-07-the-story-of-the-red-longhorn-beetle-es","status":"publish","type":"post","link":"https:\/\/pawel.stefanoff.pl\/bugs\/es\/posts\/2026-07-the-story-of-the-red-longhorn-beetle-es\/","title":{"rendered":"Levaduras, madera y flores: Los secretos del escarabajo longicornio rojo"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">El escarabajo longicornio rojo (<em>Stictoleptura rubra<\/em>) exhibe un dimorfismo sexual tan marcado que hist\u00f3ricamente machos y hembras fueron descritos como especies totalmente diferentes. Las hembras alcanzan entre 10 y 20 mm de longitud y muestran un color rojo ladrillo o casta\u00f1o uniforme en la cabeza, el t\u00f3rax y los \u00e9litros. Los machos, en cambio, son m\u00e1s peque\u00f1os y estilizados, con la cabeza y el t\u00f3rax negros en contraste con \u00e9litros de tono amarillo paja o leonado. En su fase larval, estos cole\u00f3pteros act\u00faan como descomponedores fundamentales, viviendo de 2 a 3 a\u00f1os en tocones y troncos de con\u00edferas en descomposici\u00f3n (como pinos y abetos) para reciclar nutrientes en el suelo forestal. Su aparato digestivo alberga levaduras especializadas capaces de producir celulasa para digerir la celulosa de la madera, aunque tambi\u00e9n requieren los nutrientes que aportan ciertos hongos del tronco para completar su desarrollo. A diferencia de las larvas xil\u00f3fagas, los adultos se dejan ver entre mayo y septiembre sobre las flores (especialmente umbel\u00edferas y zarzamoras), aliment\u00e1ndose de polen y n\u00e9ctar. Me encontr\u00e9 con este vistoso macho correteando entre las flores durante una tarde soleada en un bosque sueco.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El escarabajo longicornio rojo (Stictoleptura rubra) exhibe un dimorfismo sexual tan marcado que hist\u00f3ricamente machos y hembras fueron descritos como 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