Gorde:
| Egile Nagusiak: | , , |
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| Formatua: | Recurso digital |
| Hizkuntza: | |
| Argitaratua: |
Zenodo
2026
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| Gaiak: | |
| Sarrera elektronikoa: | https://doi.org/10.5281/zenodo.19166103 |
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Aurkibidea:
- <p><b><i>Phengodes</i> (<i>Phengodella</i>) <i>wittmeri</i> sp. nov. Uchima-Taborda, Vega-Badillo & Zaragoza-Caballero</b></p><p>(Figs: 12D–F, 19G–I, 25D–G, 28D–F)</p><p><b>Description:</b></p><p>Male. <b>General Body</b>: Body length 10.09, body width at shoulder height 1.86. Body general coloration ochre yellow, except the lighter toned head and pronotum; areas around eyes, inner edge, and apical half of the mandible brownish. Elytral disc darker than apex and internal border. Last two ventrites and last three tergites brown (Fig 12D–F).</p><p><b>Head (Fig 19G–I):</b> Head 1.72 times wider (2.56) than long (1.48), narrower than pronotum (2.24). Eye 0.56 in length, 0.56 in height (lateral view), 0.35 in dorsal width (dorsal view), and 0.37 in ventral width (ventral view). Eye in lateral view twice temple length (0.25); its posterior border concave, gena is still visible (Fig 19I); in dorsal interocular distance (1.02) 2.94 times eye width; in ventral interocular distance (0.90) 2.23 times eye width.Antennal tubercles gradually pronounced and spaced, covered by superficial punctures; interantennal distance (0.43) 2.15 times antennal fossae width (0.20), and subequal to scape length (0.46); antennal length (4.27) ending between middle and elytral apex and above apex of second abdominal segment. Scape cylindrical, widen at the middle; antennomeres I–III length (0.69), II conic (0.16) and III cupuliform (0.07), III not projected ventrally or dorsally; antennomeres IV–VI (1.06), formula IV<V=VI, flabellae of these antennomeres 3–5 times longer than respective antennomere, antennomere XII (1.15) 2.80 times XI (0.41).</p><p>Vertex with converging transverse carinae, without longitudinal medial sulcus. Longitudinal sulcus in frons absent, punctuation incipient, lumen narrower than puncture diameter. Fronto-clypeal suture convex. Clypeus divided and apically notched; clypeal lobes fusiform; clypeus covered with punctures, diameter greater than lumen, denser near borders. Mandibles short (0.68), shorter than head and dorsoventrally flattened; mandibles widened at base, then thinning towards apex; setae and punctures present from base to curvature, external and internal border without marks (Fig 19G). Galea expanded with abundant setae at apex; maxillary palpi long (1.02) and thick, two times labial palpi length (0.46), maxillary palpi formula I<II>III<IV, II<IV, second 1.8 times first; labial palpi formula 0<I<II<III, second 1.2 times the first (Fig 19H).</p><p><b>Thorax:</b> Pronotum quadrangular, 1.08 times wider at base (1.43) than long (1.32), wider in middle (1.62); anterior and lateral borders convex, latter constricted near posterior border, posterior undulate, discontinuous, with incipient sulcus along entire discontinuity; posterior corners acute-angled and angled. Lateral expansions narrow, pronotum width 16.5 times expansion width (0.092), expansions widen at middle. Pronotal disc quadrangular, without medial sulcus, two incipient pronotal tubercles near middle; punctures superficial with lumen greater than its diameter, lumen lustrous (Fig 19G). Scutellum 1.86 times longer (0.65) than wide (0.35). Elytra 3.7 times longer (3) than wide (0.81) and 2.27 times longer than pronotum, ending at middle of abdominal segment III; surface chagrined, punctuation denser at apex (Fig 12D). Membranous wings 5.76 times longer (6.70) than wide (1.17). Tibial apex with uniform spines; arolium present in the tarsomere IV, covering the first quarter of V.</p><p><b>Abdomen:</b> Abdominal segments feebly expanded, covered with minute yellow hairs. Posterior border of tergite VII straight; posterior border of ventrite VII straight with a rounded medial projection that is not sunken, ventrite VIII emarginate (25D–G). Aedeagus short (1.44) and slightly asymmetric; central lobe longer than parameres; parameres 3.29 times longer (0.613) than wider (0.186). Apex of each paramere with two pronounced teeth, equal in size (Fig 28F); internal border of paramere not sinuate. Flagellum (2.98) 3.4 times aedeagus length (Fig 28D–F).</p><p><b>Female:</b> Unknown.</p><p><b>Diagnosis:</b> Small specimen 10.09, divided clypeus with fusiform lobes, pronotum quadrangular with rounded lateral borders, and pronotum width 16 times the expansion width; elytra not strongly constricted in the middle, antennae short and ending in between middle and apex of the elytra. Medial projection in the ventrite VII incipient, non-sunken below the level of the posterior border, and two equal sized denticles at paramere apex. Additionally, interocular distance 1, and antennomeres IV–VI distance 0.75.</p><p><b>Remarks:</b> This species is similar to <i>P. (Pla.) leonilae</i>, but differentiated especially for the pronotum form, which in <i>P. (Pla.) leonilae</i> is not quadrangular, usually transverse, additionally parameres in <i>P</i>. <i>(Pla.) wittmeri</i> are wider than those in <i>P. (Pla.) leonilae.</i></p><p><b>Distribution and ecology:</b> Chiapas (Fig 30). Reported in Mapastepec, municipality influenced by mangrove, xerophile ecosystems, and mountain forests (CONABIO 1999; Instituto Nacional de Estadistica y Geografia. INEGI 2010).</p><p><b>Etymology:</b> This species is dedicated to Dr. Walter Wittmer, former researcher of Phengodidae, who made great advances in the study of the family.</p><p><b>Examined material:</b> <b>HOLOTYPE: MEXICO:</b> Chiapas, Mapastepec, 11/04/1940, 15°26’8.00”N, 92°54’0.53”O, (CNIN) (1 ♂).</p>