Eight new species of Ptenidiini and Discheramocephalini (Coleoptera: Ptiliidae) from Ecuador Author Darby, Michael text European Journal of Taxonomy 2020 2020-01-31 599 1 19 journal article 24119 10.5852/ejt.2020.599 2bd2cec3-b699-4d26-8d1a-b08d374fe14d 3659580 1A3606F2-91CC-4414-AE13-8F086D882AF3 Nossidium harrietae sp. nov. urn:lsid:zoobank.org:act: 808DC202-D54F-4596-A8C4-974DB 2200 DF5 Fig. 1 A–G Etymology Named after Harriet Oram, a close friend of the author’s family. Material examined Holotype ECUADOR • ♂ ; Napo , Cosanga , Camp ; 2100 m a.s.l. ; 7 Jun. 2017 ; sifting; J . McClarin leg.; QCAZM . Paratypes ECUADOR • 6 spec. ; same data as for holotype ; one mounted ventral side uppermost; BMNH , QCAZM • 3 spec. ; same data as for holotype but 8 Jun. 2017 ; BMNH , QCAZM • 2 spec. ; same data as for holotype but 6 Jun 2017 ; QCAZM • 1 spec. ; same data as for holotype but 11 Jun. 2017 ; abdomen only; mounted as a slide; BMNH • 35 spec. ; Napo , Cosanga , Camp , flotsam; 2100 m a.s.l. ; 1 Jul. 2017 ; in alcohol; BMNH . Description SIZE. Habitus length 0.89 mm , globose species, ( Fig. 1A ). COLOUR. Dark brown, shining; pubescence, antennae and legs dusky yellow. HEAD. Smooth, shining, with sparse pubescence, width across eyes 0.32 mm ; antennomeres III–XI length 0.38 mm , the two basal segments forming a scape and IX–XI a loosely jointed club; mentum tapering posteriorly, with two long setae situated medially on lateral margins, anterior margin concave before sinuate corners, prementum with 5–6 setae ( Fig. 1E ); labrum setose. Fig. 1. Nossidium harrietae sp. nov. A . Habitus. B . Spermatheca. C . Aedeagus. D . Bifurcate projection of the metaventrite between the metacoxae ×1480. E . Mentum and prementum ×900. F . Venter ×288. G . Mesoventrite keel ×855. PRONOTUM. Length 0.20 mm , width 0.58mm , widest basally, disc simple, pubescence confined to sides, hind corners posteriorly directed in dorsal view, lateral margins with narrow borders in lateral view. ELYTRA. Length 0.67 mm , width 0.60 mm , widest at humeri, completely covering abdomen, shallowly foveolate, pubescent setae of same length as those on pronotum, with wide pubescent epipleura. SCUTELLUM. Small, triangular. PROSTERNUM. Very narrow in front of procoxae, which are adjacent and with short keel anteriorly reaching midpoint of coxal cavities; coxal cavities open behind. MESOVENTRITE. Collar reticulate, narrow, with sharply defined anterior margin produced medially as a narrow extension to posterior margin, extended onto humeri without forming a humeral tooth; mesocoxae separated by a broad, flattened, reticulate, pubescent keel, which slopes sharply anteriorly as narrow ridge to posterior margin of collar ( Fig. 1G ), posterior margin sinuate before meeting lateral margin ( Fig. 1F ). METAVENTRITE. Length 0.18 mm , width 0.49 mm , with sparse pubescence, anterior margin with broad raised border around mesocoxae, metepisternal sutures clearly marked, turning sharply posteriad before lateral margin, metacoxae separated by a bifurcate extension of metaventrite, which is not sharply pointed ( Fig. 1D ), coxal plates rounded before tapering to a point at lateral margin ( Fig. 1F ). WINGS. Without clear medial restriction, fringed with setae. MALE GENITALIA. Aedeagus with narrow parameres ( Fig. 1C ). FEMALE GENITALIA. Spermatheca rounded ( Fig. 1B ). Remarks Nossidium harrietae sp. nov. shares with N. katyae Darby, 2015 and N. schuelkei Darby, 2016 a wide and flattened mesoventrite keel separating the mesocoxae, but is distinguished from the former by its more globular rounded form, disc of pronotum without pubescence and the sharp spines on the bifurcate metaventrite process, and from the latter by the much less densely punctured and pubescent dorsum.