Acroceridae, known as spider flies, are exclusive endoparasitoids of spiders. This study reports the first host association for Ogcodes pygmaeus White, 1914 (Diptera: Acroceridae) after discovering dead acrocerids and their host spiders inside Sceliphron formosum Smith, 1856 (Hymenoptera: Sphecidae) nests in ACT, Australia. From a total of 650 sampled wasp nests, 14 were discovered with multiple spiders parasitised by species of Ogcodes Latreille, 1796. Two species of jumping spiders in the genus Servaea Simon, 1887 (Araneae: Salticidae), including an undescribed species, were identified as hosts of O. pygmaeus in this study. We hypothesise that the parasitised spiders were brought back to the nest as S. formosum prey items, and when acrocerid adults emerged they were trapped inside the sealed nests. Dead pupae were also found in the nests along with the dead adult acrocerids. To our knowledge, this entrapment of spider parasites inside S. formosum nests has not been documented before, and this study represents a new method for obtaining acrocerid fly host records.

Disteniidae and Cerambycidae (Coleoptera) taken in Guatemala are recorded along with the political department in which they were collected. Nineteen species are added to the list known from Guatemala.

A new species, Jacaena jinxini Liu & Xu, sp. nov. (Liocranidae) is described from Guangxi Zhuang Autonomous Region, China.

The genus MacrophthalmothripsKarny,1922 is recorded from China for the first time with M. splendidusAnanthakrishnan, 1968 from monsoon forest. The male is described and illustrated for the first time. The species is dimorphic, and characters are provided that differentiate M. splendidus from M. quadricolor Karny, 1923.

Three new species of longhorned beetles (Coleoptera: Cerambycidae) from Central and South America are described and illustrated: Strangalia yoryinethaesp. nov. and Strangalia lourdesaesp. nov. (Lepturinae: Lepturini), both from Monteverde, Costa Rica; and Peritrox shanebouchardisp. nov. (Lamiinae: Onciderini) from Paraguay. In addition, a key to the known species of Peritrox Bates, 1865 is provided.