Gyrophaena (Phaenogyra) gracilis Seevers 1951
Creators: name: Klimaszewski, Jan
name: Webster, Reginald
name: Savard, Karine
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Gyrophaena
Gyrophaena gracilis

description: 29. <i>Gyrophaena (Phaenogyra) gracilis</i> Seevers Figs 1–3, 28, 184–191; Map 24 <i>Gyrophaena (Phaenogyra) gracilis</i> Seevers, 1951: 727; Moore and Legner 1975: 429. <b>Description.</b> Body length 1.3–1.5 mm, dark brown with light brown pronotum. Punctation: vertex of head, pronotum and elytra evenly punctate (Fig. 1). Microsculpture: reticulate throughout. Antennae light yellow-brown as illustrated (Fig. 1). Pronotum 1.2 times as wide as long. MALE: tergite 8 with two large lateral teeth, and two small teeth, apical margin slightly emarginate medially (Fig. 182); <b>Map 24.</b> Collection localities in New Brunswick, Canada of <i>Gyrophaena gracilis</i> <b>28. <i>G. gracilis</i> 29. <i>E. corruscula</i> 30. <i>E. socia</i></b> <b>Figures 28–30.</b> <i>Gyrophaena</i> and <i>Eumicrota</i> species in dorsal view (apical part of abdomen removed in Fig. 29): <b>28</b> <i>G</i>. (<i>P</i>.) <i>gracilis</i> Seevers <b>29</b> <i>E</i>. <i>corruscula</i> (Erichson) and <b>30</b> <i>E</i>. <i>socia</i> (Erichson). sternite 8 rounded apically (Fig. 183). Median lobe of aedeagus with elongate and apically divided tubus (Figs 184, 185), its base may be slightly swollen basally (Fig. 184), apical projection of internal sac short and irregularly shaped (Figs 184, 185). Paramere as illustrated (Fig. 186). FEMALE. Tergite 8 truncate apically (Fig. 190); sternite 8 broadly rounded apically and pointed medially (Fig. 191); spermatheca as illustrated (Fig. 189). Despite its distinctive external morphology, <i>G. gracilis</i> has genital structures very similar to those of <i>G. meduxnekeagensis</i> and <i>G. subnitens</i> (Figs 161–174). <b>Bionomics. Macrohabitat:</b> Silver maple swamp, flood plain forest, red oak forest. <b>Microhabitat:</b> on <i>Trametes hirsuta</i> (Wolfen) Pilat growing on <i>Populus tremuloides</i> log (two sites), partially dried <i>Pleurotus</i> sp. on dead standing trembling aspen (one specimen) and one specimen from nest contents of barred owl (<i>Strix varia</i> Barton) nest box with small chicks. <b>Collecting period:</b> May, June, and August. <b>Collecting method:</b> sifting mushrooms and aspirating specimens. <b>Distribution</b> (Map 24). <b>CANADA: New Brunswick</b>; UNITED STATES: Wisconsin. <b>Comments.</b> <i>Gyrophaena gracilis</i> is externally the most distinctive species of the genus. Unlike other <i>Gyrophaena</i> species it has an extremely elongate postocular temple area of the head with sides subparallel for most of its length (Fig. 1), a small, evenly punctate pronotum (Fig. 1) and a swollen abdomen (Figs 1, 2). Adults of this species occurred within the pores of the host mushrooms. The elon- gate body of this species would appear to be an adaptation allowing this species to enter the pores of its host.
description: Published as part of <i>Klimaszewski, Jan, Webster, Reginald &amp; Savard, Karine, 2009, Review of the rove beetle species of the subtribe Gyrophaenina Kraatz (Coleoptera, Staphylinidae) from New Brunswick, Canada: new species, provincial records and bionomic information, pp. 81-170 in ZooKeys 22 (22)</i> on pages 126-127, DOI: 10.3897/zookeys.22.219, http://zenodo.org/record/576536
description: {"references": ["Seevers CH (1951) A revision of the North American and European staphylinid beetles of the subtribe Gyrophaenae (Aleocharinae, Bolitocharini). Fieldiana Zoology 32 (10): 659 - 762.", "Moore I, Legner EF (1975) A catalogue of the Staphylinidae of America north of Mexico (Coleoptera). Division of Agricultural Science, University of California Special Publication 3015: 514 pp."]}