Grynoma Sharp, 1877

Kolibac, Jiri, 2013, Trogossitidae: A review of the beetle family, with a catalogue and keys, ZooKeys 366, pp. 1-194 : 116-117

Genus Grynoma Sharp, 1877 Fig. 10 ; Map 12

Grynoma Sharp, D. 1877: 267

Type species.

Grynoma diluta Sharp, 1877 [designated by Kolibáč 2005]

Léveillé, A. 1910: 29. Crowson, R. A. 1964a: 299 (as Grynoma Broun). Kolibáč, J. 2005: 59. Kolibáč, J. 2006: 111 (phylogeny)

Description.

Body size: about 5.0-5.5 mm. Body shape flat. Gular sutures wide, convergent at apex. Frontoclypeal suture present. Frons: longitudinal groove or depression absent. Cranium ventrally: tufts of long setae at sides absent. Submentum: ctenidium absent. Antennal groove absent. Eyes: size large, lateral. Eyes number: two. Epicranial acumination moderate. Lacinial hooks absent. Galea: shape sub-clavate. Galea: ciliate setae absent. Mediostipes-Lacinia partially fused. Palpifer: outer edge even. Mandibular apical teeth number: two, horizontally situated. Mola absent. Penicillus (at base) long setae. Pubescence above mola or cutting edge absent. Ventral furrow absent. Basal notch shallow or absent. Labrum-Cranium fused. Epipharyngial sclerite absent. Lateral tormal process: projection projection not developed (all remaining). Ligula: ciliate setae absent. Ligula membranous, not retroflexed, weakly emarginate. Hypopharyngeal sclerite consisting of two separate parts. Antenna 10-segmented. Antennal club weakly asymmetrical, sensorial fields absent. Front coxal cavities externally open, internally open. Pronotum transverse. Prepectus present. Middle coxal cavities open. Elytra: long hairs absent. Epipleuron moderate. Elytral interlocking mechanism absent, carinae reduced. Elytral punctation irregular, scales absent. Wing: radial cell moved down, often small, wedge cell absent, cross vein MP3-4 absent, cross vein AA1+2-3+4 absent. Front tibiae: spines along side moderate. Hooked spur absent, apical spurs not hooked or weakly hooked. Claws: denticle absent. Parasternites number along ventrites III-VII: one. Spiculum gastrale absent. Tegmen composed of three parts.

Larva: Paragular sclerites absent. Cardo-Stipes not fused. Cardo: size nearly as large as stipes. Torma H-shaped. Abdominal segment IX transversely divided. Tergite IX flat. Urogomphi present, hooked; median process present.

Biology.

Crowson (1964a) found " only detrital material and vegetable fibres " in the gut of adult Grynoma varians ; however, there were " insect fragments as well as detrital material " in the gut of a larva of the same species. I assume that the adults and larvae are predatory.

Distribution.

New Zealand.

Species:

Grynoma albosparsa Broun, 1909; New Zealand (AL)

Léveillé, A. 1910: 29

Grynoma ambiguum Broun, 1880; New Zealand (AL)

Léveillé, A. 1910: 21 ( Leperina ambigua ). Leschen, R. A. B. & Lackner, T. 2013: 301 (comb. from Leperina )

Grynoma diluta Sharp, 1877; New Zealand (AL)

Léveillé, A. 1910: 29. Kolibáč, J. 2005: 59 (redescription)

Grynoma fusca Sharp, 1877; New Zealand (AL)

Léveillé, A. 1910: 29

Grynoma regularis Sharp, 1882; New Zealand (AL)

Léveillé, A. 1910: 29

Grynoma varians Broun, 1893; New Zealand (RAC)

Crowson, R. A. 1964a: 297 (adult and larva). Kolibáč, J. 2006: 107 (larva)

Note: The species was omitted by Léveillé (1910).

Figures

Figure 10. A Thymalus limbatus B Phloiophilus edwardsi C Eronyxa marginicollis D Decamerus haemorhoidalis E Diontolobus punctatipennis F Afrocyrona ciskeiensis G Afrocyrona dwesae H Grynoma sp., New Zealand I Grynoma diluta.

Map 12. A distribution of the tribe Ancyronini.