Derelomus discus Haran & Benoit & Dufaÿ & Procheş & Kergoat 2025, sp. nov.
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2025
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| author | Haran, Julien M. Benoit, Laure Dufaÿ, Mathilde Procheş, Serban Kergoat, Gael J. |
| author_facet | Haran, Julien M. Benoit, Laure Dufaÿ, Mathilde Procheş, Serban Kergoat, Gael J. |
| contents | <p><b><i>Derelomus discus</i> Haran sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 709DB3EC-E923-453D-BD88-C1C31004CF04</p><p>Fig. 31</p><p><b>Diagnosis</b></p><p>In the <i>D. ephippiger</i> group, this species can be distinguished by the uniformly pale brown pronotum and elytra in the males, their shape almost forming a disc, and the comb of erect setae on the protibiae (Fig. 31D). It is closest to <i>D. ephippiger</i> and <i>D. costiger</i>, but the rostrum is longer than in those two species which also lack a comb on the protibiae in the males. The body of the penis and the stridulatory plate are diagnostic in all these species. Females are unknown.</p><p><b>Etymology</b></p><p>This species is named in reference to the very wide elytra in male, almost forming a disc with the pronotum.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>REPUBLIC OF SOUTH AFRICA – <b>Limpopo Province</b> • ♂; “SOUTH AFRICA, Venda; Nwanedi Waterfall; 22.38S 30.24E [22°37′34.8″ S 30°24′21.6″ E]; 8.ii.1994 R. Oberprieler ” “collected from; <i>Phoenix reclinata</i>; (ARECACEAE)” “National coll.; of insects; Pretoria, S. Afr” “Holotype ♂; <i>Derelomus discus</i>; Haran, 2025”; SANC.</p><p><b>Paratype</b></p><p>REPUBLIC OF SOUTH AFRICA – <b>Limpopo Province</b> • 1 ♂; Hans Merensky Nature Reserve; 23°41′42.0″ S, 30°40′04.8″ E; 23–25 Jan. 1987; R. Oberprieler coll.; collected on leaves of <i>Phoenix reclinata</i>; ANIC.</p><p><b>Description</b> (♂)</p><p>MEASUREMENTS. Body length 3.2 – 3.3 mm.</p><p>COLOR. Body integument uniformly pale brown, apical ¾ of rostrum and club dark brown, post ocular area slightly darker than rest of head capsule; dorsum with minute recumbent whitish setae, glabrous in appearance.</p><p>HEAD. Rostrum a little longer than pronotum in lateral view (1.1×), regularly downcurved; in dorsal view about 4.75 × as long as wide, integument densely punctate, forming 5 longitudinal carinae; antennae inserted at apical 1/5 of length in lateral view; head capsule densely punctate in dorsal view, forehead flat; eyes convex, exceeding lateral curve of head capsule in dorsal view; antennal funicle with first segment 2.5× as long as wide, as long as segments 2–3 together, 3–7 transverse.</p><p>PRONOTUM. Wider than long (W: L ratio: 1.85), widest near base, a little narrower there than elytra at humeral angles (0.85×), side rounded, converging apicad, forming deep notch near middle of length; apical constriction distinct, about as deep as width of scape in middle of length; integument with punctures rounded, space between punctures rough, shiny, micropunctate, wider or narrower than diameter of punctures in middle, narrower laterally.</p><p>METATHORAX. Metanepisterna with recumbent white setae, non-contiguous.</p><p>ELYTRA. A little longer than wide (W: L ratio: 0.92); sides strongly convex, widest near basal ¼ of length; humeri not distinct from lateral curvature of elytra; apex rounded, jointed at level of suture; striae with punctures about ½ to ⅓ as wide as width of interstriae; interstriae flat, 5 slightly raised on basal 3/5 of length; scutellar shield rounded, coated with small recumbent scales not concealing integument.</p><p>ABDOMEN. Underside uniformly pale brown, with minute recumbent whitish setae, not contiguous. Stridulatory plate with lines of 11–12 granules about as long as median line from base, space between granules 1–2× as wide as diameter of a granule. Central sclerotized area slightly longer than wide, rounded at base (Fig. 31E).</p><p>LEGS. Profemora moderately thickened near middle of length; protibiae with external margin straight, internal bisinuate, with a comb of erect setae on apical ½ of length, setae longer than a claw (Fig. 31D); claws simple.</p><p>TERMINALIA. Body of penis elongate (W: L ratio: 0.33), about as long as apodemes; sides subparallel in basal ⅔, converging apicad in apical ⅓ in dorsal view, apex rounded; in lateral view curvature moderate, stronger in basal ⅓ of length, width narrowing regularly from apical ¼ of length to apex, apex downcurved (Fig. 31C).</p><p><b>Life history</b></p><p>Adults were collected on <i>Phoenix reclinata</i> (Arecaceae) in January and February.</p><p><b>Distribution</b></p><p>This species is known from two male specimens from the Limpopo Province in the Republic of South Africa. Its putative host, <i>P. reclinata</i> is widely distributed in Africa.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17251934 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Derelomus discus Haran & Benoit & Dufaÿ & Procheş & Kergoat 2025, sp. nov. Haran, Julien M. Benoit, Laure Dufaÿ, Mathilde Procheş, Serban Kergoat, Gael J. Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Curculionidae Derelomus Derelomus discus <p><b><i>Derelomus discus</i> Haran sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 709DB3EC-E923-453D-BD88-C1C31004CF04</p><p>Fig. 31</p><p><b>Diagnosis</b></p><p>In the <i>D. ephippiger</i> group, this species can be distinguished by the uniformly pale brown pronotum and elytra in the males, their shape almost forming a disc, and the comb of erect setae on the protibiae (Fig. 31D). It is closest to <i>D. ephippiger</i> and <i>D. costiger</i>, but the rostrum is longer than in those two species which also lack a comb on the protibiae in the males. The body of the penis and the stridulatory plate are diagnostic in all these species. Females are unknown.</p><p><b>Etymology</b></p><p>This species is named in reference to the very wide elytra in male, almost forming a disc with the pronotum.</p><p><b>Material examined</b></p><p><b>Holotype</b></p><p>REPUBLIC OF SOUTH AFRICA – <b>Limpopo Province</b> • ♂; “SOUTH AFRICA, Venda; Nwanedi Waterfall; 22.38S 30.24E [22°37′34.8″ S 30°24′21.6″ E]; 8.ii.1994 R. Oberprieler ” “collected from; <i>Phoenix reclinata</i>; (ARECACEAE)” “National coll.; of insects; Pretoria, S. Afr” “Holotype ♂; <i>Derelomus discus</i>; Haran, 2025”; SANC.</p><p><b>Paratype</b></p><p>REPUBLIC OF SOUTH AFRICA – <b>Limpopo Province</b> • 1 ♂; Hans Merensky Nature Reserve; 23°41′42.0″ S, 30°40′04.8″ E; 23–25 Jan. 1987; R. Oberprieler coll.; collected on leaves of <i>Phoenix reclinata</i>; ANIC.</p><p><b>Description</b> (♂)</p><p>MEASUREMENTS. Body length 3.2 – 3.3 mm.</p><p>COLOR. Body integument uniformly pale brown, apical ¾ of rostrum and club dark brown, post ocular area slightly darker than rest of head capsule; dorsum with minute recumbent whitish setae, glabrous in appearance.</p><p>HEAD. Rostrum a little longer than pronotum in lateral view (1.1×), regularly downcurved; in dorsal view about 4.75 × as long as wide, integument densely punctate, forming 5 longitudinal carinae; antennae inserted at apical 1/5 of length in lateral view; head capsule densely punctate in dorsal view, forehead flat; eyes convex, exceeding lateral curve of head capsule in dorsal view; antennal funicle with first segment 2.5× as long as wide, as long as segments 2–3 together, 3–7 transverse.</p><p>PRONOTUM. Wider than long (W: L ratio: 1.85), widest near base, a little narrower there than elytra at humeral angles (0.85×), side rounded, converging apicad, forming deep notch near middle of length; apical constriction distinct, about as deep as width of scape in middle of length; integument with punctures rounded, space between punctures rough, shiny, micropunctate, wider or narrower than diameter of punctures in middle, narrower laterally.</p><p>METATHORAX. Metanepisterna with recumbent white setae, non-contiguous.</p><p>ELYTRA. A little longer than wide (W: L ratio: 0.92); sides strongly convex, widest near basal ¼ of length; humeri not distinct from lateral curvature of elytra; apex rounded, jointed at level of suture; striae with punctures about ½ to ⅓ as wide as width of interstriae; interstriae flat, 5 slightly raised on basal 3/5 of length; scutellar shield rounded, coated with small recumbent scales not concealing integument.</p><p>ABDOMEN. Underside uniformly pale brown, with minute recumbent whitish setae, not contiguous. Stridulatory plate with lines of 11–12 granules about as long as median line from base, space between granules 1–2× as wide as diameter of a granule. Central sclerotized area slightly longer than wide, rounded at base (Fig. 31E).</p><p>LEGS. Profemora moderately thickened near middle of length; protibiae with external margin straight, internal bisinuate, with a comb of erect setae on apical ½ of length, setae longer than a claw (Fig. 31D); claws simple.</p><p>TERMINALIA. Body of penis elongate (W: L ratio: 0.33), about as long as apodemes; sides subparallel in basal ⅔, converging apicad in apical ⅓ in dorsal view, apex rounded; in lateral view curvature moderate, stronger in basal ⅓ of length, width narrowing regularly from apical ¼ of length to apex, apex downcurved (Fig. 31C).</p><p><b>Life history</b></p><p>Adults were collected on <i>Phoenix reclinata</i> (Arecaceae) in January and February.</p><p><b>Distribution</b></p><p>This species is known from two male specimens from the Limpopo Province in the Republic of South Africa. Its putative host, <i>P. reclinata</i> is widely distributed in Africa.</p> |
| title | Derelomus discus Haran & Benoit & Dufaÿ & Procheş & Kergoat 2025, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Curculionidae Derelomus Derelomus discus |
| url | https://doi.org/10.5281/zenodo.17251934 |