New Ptiliidae (Coleoptera) from Sarawak in the spirit collection of the Natural History Museum, London Author Darby, Michael Department of Life Sciences, Natural History Museum, London, SW 7 5 BD UK. m.darby@nhm.ac.uk text European Journal of Taxonomy 2019 2019-04-04 512 1 50 journal article 10.5852/ejt.2019.512 85c6241d-5e5a-4022-945f-e207d31458ef 2118-9773 2628794 urn:lsid:zoobank.org:pub:8DF89CFD-A549-4C69-8FBC-90EC8DEA9A66 Acrotrichis globosa sp. nov. urn:lsid:zoobank.org:act: 87156BD9-1A60-4E21-84F4-4A96D82E9FA2 Fig. 19 Diagnosis The rounded body form, possession of elytra with wide epipleura and a medial foveola in the mesoventral collar distinguish this species. Etymology Refers to the globular form of the species. Type material Holotype MALAYSIA-BORNEO • ♀ ; Sarawak , 4 th Division, Gunung Mulu National Park ; May–Aug. 1978 ; P.M. Hammond and J.E. Marshall leg., BM 1978-49 ; comp 5, alluvial forest litter; BMNH . Paratypes MALAYSIA-BORNEO • 1 ♂ , 1 ♀ ; same data as for holotype; BMNH • 1 ♀ , same data as for holotype; comp 1, litter near stream; BMNH . Description SIZE. Habitus ( Fig. 19A ), length 0.82 mm . COLOUR. Yellowish brown, antennae and legs pale yellow, dorsal surface densely covered with short yellow pubescence. HEAD. Distance across eyes 0.38 mm ; antennomeres III–XI, length 0.34 mm ; mentum and submentum chaetotaxy ( Fig. 19G ). PRONOTUM. Length 0.29 mm , width 0.63 mm , hind angles right angled (viewed from 45°) ( Fig. 19B ). ELYTRA. Length 0.48 mm , width 0.62 mm , widest across humeri, with wide epipleura in basal half ( Fig. 19F ). VENTRUM. Mesoventrum reticulate with scattered pubescence at lateral margins which are shallowly concave, collar with a small medial fovea, keel obliterated anteriorly before collar, posteriorly narrowing to a point between the mesocoxae ( Fig. 19F ). Metaventrum reticulate, pubescent, posterior margin between metacoxae wide, with two sharp points at corners, metacoxae separated by ± ¹∕₅ the width of the sclerite. FEMALE GENITALIA. Spermatheca ( Fig. 19D ). MALE GENITALIA. Aedeagus ( Fig. 19E ).