Portal de Periódicos da CAPES

Phoresy by Dendrochernes Pseudoscorpions on Cerambycidae (Coleoptera) and Aulacidae (Hymenoptera) in Florida

1987; University of Notre Dame; Volume: 117; Issue: 2 Linguagem: Inglês

10.2307/2425979

1938-4238

Robert A. Haack, R. C. Wilkinson,

Entomological Studies and Ecology

Adult male and female Dendrochernes cf. morosus (Banks) (Pseudoscorpionida: Chernetidae) were phoretic on adults of the wood-boring cerambycids Monochamus titillator (Fabricius), Neacanthocinus obsoletus (Olivier) and Xylotrechus sagittatus sagittatus (Germar), and the aulacid parasitic wasp Pristaulacus niger (Shuckard) that had emerged from trunk sections of two naturally infested slash pine (Pinus elliottii Engelmann var. elliottii) trees in Florida. This is apparently a new record of phoresy by pseudoscorpions on an aulacid host. The pseudoscorpions (collected in a 1:1 sex ratio) were attached to the legs and antennae of cerambycids and to the legs and the pedicel of the abdomen of aulacids. As many as five pseudoscorpions were attached to a single cerambycid and three to a single aulacid. Developmental time of the host cerambycids and aulacids was shortened in pine trunk sections having thick (2.5-3.5 mm thick) as opposed to thin (0.5-1.5 mm thick) inner bark (phloem), leading to earlier emergence of the host insects and phoresy by the pseudoscorpions from the thick-phloem sections.