Littoral Willemia (Collembola: Hypogastruridae) of China with a Description of Two New Species and a New Case of Convergence Between Hypogastruridae and Onychiuridae

Authors

  • Yun Bu
  • Mikhail B. Potapov
  • Yan Gao

Abstract

Two new species Willemia antennomonstrum sp. nov. collected in Hainan and W. dhaesei sp. nov. collected in Shandong from sand beaches of the Pacific coast of China are described. Both species belong to the buddenbrocki group. Willemia antennomonstrum sp. nov. shows convergence to family Onychiuridae, because it has a remarkable expanded granulated guard sensilla in sensory organ of antennal segment III. Willemia dhaesei sp. nov. differs principally from other members of the group by presenting a m-row of setae on abdominal segment IV. Willemia koreana Thibaud & Lee, 1994 (anophthalma group) is recorded in China for the first time; having been found at Zhejiang.

Resumen: Se describen dos nuevas especies, Willemia antennomonstrum sp. nov. recolectada en Hainan y W. dhaesei sp. nov. recolectada en Shandong, ambas de las playas de arena de la costa Pacífica de China. Ambas especies pertenecen al grupo buddenbrocki; la especie nueva W. antennomonstrum muestra una convergencia hacia la familia Onychiuridae debido a la notable ampliación de la sensilla de guardia granulada en el órgano sensorial del segmento III de la antena. Se diferencia de la especie nueva, W. dhaesei, de otros miembros del grupo, principalmente, por las setas desarrolladas de la fila-m en el IV segmento abdominal. Se registra la especie, W. koreana Thibaud y Lee, 1994 (grupo anophthalma) por primera vez en China (Zhejiang).

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Published

2012-09-01

Issue

Vol. 95, No. 3 (September 2012)

Section

Research Papers

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