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2010
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| author | Delgado, Juan A. Palma, Ricardo L. |
| author_facet | Delgado, Juan A. Palma, Ricardo L. |
| contents | <p><b><i>Podaena hauturu</i> Delgado and Palma, new species</b></p><p>(Figs 5, 6, 40, 44, 96, 107)</p><p><b>Description. <i>Male</i></b> as in Fig. 107.</p><p><i>Body</i>: length (taken from anterior margin of labrum to elytral apex) 2.00 mm. <i>Colour</i>: head, pronotum and elytra dark brown; elytra with lighter proximal third and shoulders; legs and maxillary palps dark brown, similar to the body.</p><p><i>Head</i>: prognathous, not retracted under the prothorax; evenly convex dorsally, smooth and glabrous, with sparse but distinct punctures; frons slightly convex, with well marked, narrow paraocular areas; eyes moderately protruding; labrum wider than long, bilobed and with a U-shaped median incision; maxillary palps long and modified (Figs 5−6), with the two distal palpomeres together longer than the second, and the penultimate well grooved, subtriangular on the lateroventral view.</p><p><i>Thorax</i>: Pronotum uniformly convex with inconspicuous lateral depressions, and with a subtle transverse posterior depression; surface smooth, moderately dense but clearly punctuated. <i>Legs</i>: relatively long and with very long middle and hind tarsi; foretibiae curved inwards in their distal third, with a shallow invagination and a long narrow distal end on lateral view (Fig. 44); on the anterior view (Fig. 40), the distal end associated with rows of setae is well expanded with an irregular edge. Metaventrite (as in Fig. 47) with a flat, cordiform glabrous area on the disc, with a central, oval and shallow concavity. Elytra with a smooth lateral rim in the anterior part but slightly serrate distally (as in Fig. 94).</p><p><i>Abdomen</i>: Ventrite 7 and spiculum as in Fig. 57, firmly attached. Ventrite 7 oval, distally emarginated; spiculum moderately long. Male genitalia as in Figs 75−76, 79−80; main piece cylindrical and well sclerotized in its proximal half, flattened and laminar in the distal half; uniformly curved on lateral view (as in Figs 75, 79); distal lobe of variable shape and indistinguishable from the distal part of the main piece; parameres wide and unsclerotized distally, very curved proximally, and weakly inserted to the phallobase, becoming easily dislodged when manipulated.</p><p><b>Female.</b> <i>Body</i>: Similar to the male in shape; length (taken from anterior margin of labrum to elytral apex) 2.00 mm. Without modified maxillary palps and foretibiae.</p><p><i>Abdomen</i>: Last tergite as in Fig. 65; gonocoxite as in Fig. 68; spermatheca as in Figs 87−92 with the proximal lighter area of the central piece about a fourth of its total length (as in Figs 89, 91), and the central piece variably curved in different specimens (as in Figs 87−88, 90, 92).</p><p><b>Differential diagnosis.</b> The long and modified male maxillary palps (Figs 5−6) clearly separate <i>P. hauturu</i> from <i>P. aotea</i>, <i>P. glabriventris</i>, <i>P. maclellani</i>, <i>P. kuscheli</i> and <i>P. mariae</i>. The male foretibiae (Figs 40, 44) further separate <i>P. hauturu</i> from <i>P. glabriventris</i>, <i>P. maclellani</i> and <i>P. mariae</i>, while the distance between tibial spines 1 and 2 further separate <i>P. hauturu</i> from <i>P. kuscheli</i> (Figs 35, 44). The modified male maxillary palps of <i>P. hauturu</i> (Figs 5−6) are sufficiently diagnostic to distinguish it from <i>P. dentipalpis</i>, <i>P. obscura</i> and <i>P. trochanteralis</i> (Figs 11−18), but the shape and chaetotaxy of the male foretibiae, especially on the anterior view, are even more diagnostic (compare Figs 32−34 with Fig. 40).</p><p><i>Podaena hauturu</i> is the largest species of the <i>P. latipalpis</i> complex. The male maxillary palps (Figs 5−6) easily separate <i>P. hauturu</i> from <i>P. aotea</i> (Figs 1−2) and <i>P. moanaiti</i> (Figs 3−4). Although the male palps of <i>P. hauturu</i> are similar to those of <i>P. latipalpis</i> (Figs 7−10), the third (penultimate) and fourth (distal) palpomeres are clearly longer in <i>P. hauturu</i>, making the whole palp longer and narrower than in <i>P. latipalpis</i>. Additional characters to distinguish <i>P. hauturu</i> from <i>P. latipalpis</i> are the shape and chaetotaxy of the male foretibiae, especially in the distal half, best seen on the anterior view (Figs 40, 42).</p><p><b>Etymology.</b> The species epithet <i>hauturu</i> is the name given to Little Barrier Island by Maori people, and also the type locality of this species. It is to be treated as a noun in apposition.</p><p><b>Type locality.</b> Little Barrier Island, CL, North Island, New Zealand.</p><p><b>Distribution.</b> As in Fig. 96. Endemic to Little Barrier Island.</p><p><b>Material examined.</b> <b>Holotype: North Island: Coromandel (CL):</b> Male (dry-mounted) (NZAC): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”.</p><p><b>Paratypes: North Island: Coromandel (CL):</b> 1 male, 4 females (1 male dry-mounted: printed label, 2 females dry-mounted: printed labels, 2 females in alcohol) (NZAC): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”. 1 male, 1 female (dry-mounted: printed labels) (MONZ): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_5310490 |
| institution | Zenodo |
| language | |
| publishDate | 2010 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Podaena hauturu Delgado and Palma 2010, new species Delgado, Juan A. Palma, Ricardo L. Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Hydraenidae Podaena Podaena hauturu <p><b><i>Podaena hauturu</i> Delgado and Palma, new species</b></p><p>(Figs 5, 6, 40, 44, 96, 107)</p><p><b>Description. <i>Male</i></b> as in Fig. 107.</p><p><i>Body</i>: length (taken from anterior margin of labrum to elytral apex) 2.00 mm. <i>Colour</i>: head, pronotum and elytra dark brown; elytra with lighter proximal third and shoulders; legs and maxillary palps dark brown, similar to the body.</p><p><i>Head</i>: prognathous, not retracted under the prothorax; evenly convex dorsally, smooth and glabrous, with sparse but distinct punctures; frons slightly convex, with well marked, narrow paraocular areas; eyes moderately protruding; labrum wider than long, bilobed and with a U-shaped median incision; maxillary palps long and modified (Figs 5−6), with the two distal palpomeres together longer than the second, and the penultimate well grooved, subtriangular on the lateroventral view.</p><p><i>Thorax</i>: Pronotum uniformly convex with inconspicuous lateral depressions, and with a subtle transverse posterior depression; surface smooth, moderately dense but clearly punctuated. <i>Legs</i>: relatively long and with very long middle and hind tarsi; foretibiae curved inwards in their distal third, with a shallow invagination and a long narrow distal end on lateral view (Fig. 44); on the anterior view (Fig. 40), the distal end associated with rows of setae is well expanded with an irregular edge. Metaventrite (as in Fig. 47) with a flat, cordiform glabrous area on the disc, with a central, oval and shallow concavity. Elytra with a smooth lateral rim in the anterior part but slightly serrate distally (as in Fig. 94).</p><p><i>Abdomen</i>: Ventrite 7 and spiculum as in Fig. 57, firmly attached. Ventrite 7 oval, distally emarginated; spiculum moderately long. Male genitalia as in Figs 75−76, 79−80; main piece cylindrical and well sclerotized in its proximal half, flattened and laminar in the distal half; uniformly curved on lateral view (as in Figs 75, 79); distal lobe of variable shape and indistinguishable from the distal part of the main piece; parameres wide and unsclerotized distally, very curved proximally, and weakly inserted to the phallobase, becoming easily dislodged when manipulated.</p><p><b>Female.</b> <i>Body</i>: Similar to the male in shape; length (taken from anterior margin of labrum to elytral apex) 2.00 mm. Without modified maxillary palps and foretibiae.</p><p><i>Abdomen</i>: Last tergite as in Fig. 65; gonocoxite as in Fig. 68; spermatheca as in Figs 87−92 with the proximal lighter area of the central piece about a fourth of its total length (as in Figs 89, 91), and the central piece variably curved in different specimens (as in Figs 87−88, 90, 92).</p><p><b>Differential diagnosis.</b> The long and modified male maxillary palps (Figs 5−6) clearly separate <i>P. hauturu</i> from <i>P. aotea</i>, <i>P. glabriventris</i>, <i>P. maclellani</i>, <i>P. kuscheli</i> and <i>P. mariae</i>. The male foretibiae (Figs 40, 44) further separate <i>P. hauturu</i> from <i>P. glabriventris</i>, <i>P. maclellani</i> and <i>P. mariae</i>, while the distance between tibial spines 1 and 2 further separate <i>P. hauturu</i> from <i>P. kuscheli</i> (Figs 35, 44). The modified male maxillary palps of <i>P. hauturu</i> (Figs 5−6) are sufficiently diagnostic to distinguish it from <i>P. dentipalpis</i>, <i>P. obscura</i> and <i>P. trochanteralis</i> (Figs 11−18), but the shape and chaetotaxy of the male foretibiae, especially on the anterior view, are even more diagnostic (compare Figs 32−34 with Fig. 40).</p><p><i>Podaena hauturu</i> is the largest species of the <i>P. latipalpis</i> complex. The male maxillary palps (Figs 5−6) easily separate <i>P. hauturu</i> from <i>P. aotea</i> (Figs 1−2) and <i>P. moanaiti</i> (Figs 3−4). Although the male palps of <i>P. hauturu</i> are similar to those of <i>P. latipalpis</i> (Figs 7−10), the third (penultimate) and fourth (distal) palpomeres are clearly longer in <i>P. hauturu</i>, making the whole palp longer and narrower than in <i>P. latipalpis</i>. Additional characters to distinguish <i>P. hauturu</i> from <i>P. latipalpis</i> are the shape and chaetotaxy of the male foretibiae, especially in the distal half, best seen on the anterior view (Figs 40, 42).</p><p><b>Etymology.</b> The species epithet <i>hauturu</i> is the name given to Little Barrier Island by Maori people, and also the type locality of this species. It is to be treated as a noun in apposition.</p><p><b>Type locality.</b> Little Barrier Island, CL, North Island, New Zealand.</p><p><b>Distribution.</b> As in Fig. 96. Endemic to Little Barrier Island.</p><p><b>Material examined.</b> <b>Holotype: North Island: Coromandel (CL):</b> Male (dry-mounted) (NZAC): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”.</p><p><b>Paratypes: North Island: Coromandel (CL):</b> 1 male, 4 females (1 male dry-mounted: printed label, 2 females dry-mounted: printed labels, 2 females in alcohol) (NZAC): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”. 1 male, 1 female (dry-mounted: printed labels) (MONZ): “Awaroa CK, Little Barrier / I. in litter, downstream / end of pool 90 m. / 9 March 74 J.S. Dugdale ”.</p> |
| title | Podaena hauturu Delgado and Palma 2010, new species |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Hydraenidae Podaena Podaena hauturu |
| url | https://doi.org/10.5281/zenodo.5310490 |