Plumarius fidalgoi Diez & Roig-Alsina

Diez, Patricia A. & Roig-Alsina, Arturo, 2016, Revision of Plumarius Philippi 1873 (Hymenoptera: Chrysidoidea, Plumariidae) from Argentina north of Patagonia, with description of eighteen new species, Zootaxa 4098 (3), pp. 442-470 : 466-467

Plumarius fidalgoi Diez & Roig-Alsina , sp. nov.

( Figs 19 A–D)

Diagnosis. This species falls in a group with the anterior ocellus above the supra-torular line and the marginal cell with the anterior margin short and the apex not narrowed. It is characterized by the torulus at nearly equal distance from the lateral ocellus and the clypeus and by the moderate ocelli, the lateral ones ellipsoidal and separated from eye by 1.6–1.7 × their maximum diameter.

Description. Holotype, ♂. Body length: 5.1 mm (paratypes 3.3–7.1 mm). Color. Light brown, with head darker.

Head. 1.2 × as wide as high in frontal view; wider in dorsal view than width of scutum between tegulae (7.5:6.7). OOD 1.3 × diameter of lateral ocellus; POD 1.2 × OOD. Antenocular distance 0.6 × diameter of torulus; interantennal distance 2.6 × antenocular distance. Vertex weakly reticulated, without punctures between lateral ocelli. Torulus nearly as close to lateral ocellus as to clypeus (1.4:1.5). Lateral ocelli in frontal view below upper margin of head. Median ocellus above supra-torular line ( Fig. 19 A). Genal carina present. Length of area between preoccipital carina and suboral swelling shorter than length of suboral swelling (0.6:1.3); without median, longitudinal carina; low area of genal bridge close to mandibular articulation without carinae or punctures ( Fig. 19 B). Malar area equal than apical width of F1 (0.7:0.7); striate anteriorly. Supraclypeal area with weak lateral striae; weakly convex in lateral view. Epistomal suture evident. Clypeus 1.4 × wider than high, with weak lateral striae; weakly rounded in lateral view ( Fig. 19 C). Proportion of lengths of maxillary palp, from base to apex: 9:8:12:15:11:12. Scape without swelling or projection. F1 4.4 × as long as its apical width, shorter than scape and pedicel combined (3.1:4.2).

Mesosoma . Area anterior to pronotal lobe smooth; pronotal lateral carina distinct, forming lower pocket. Notaulus weakly marked, as long as admedian line. Anterior surface of scutum without punctures. Propleuron and mesopleuron without punctures. Metaposnotum without striae reaching posterior margin. Propodeum transverse; swollen behind spiracle, without carina anterior to spiracle. Fore wing: marginal cell with anterior margin 2 × as long as posterior margin; length of vein Rs3 subequal than Rs4 (1.5:1.7); vein M separated from cu-a by 0.2 × length of cu-a; discal cell rectangular. Hind wing: vein cu-a postfurcal to vein M. Protarsomere 1with two outer lateral spines. Length of mesotarsomere 1 shorter than metatarsomere 1 (3.3:4.5); inner metatibial spur 1.6 × as long as outer spur.

Metasoma. T7 pointed with a polish area. Genitalia as in Fig. 19 D.

Examined material. Holotype, ♂. ARGENTINA, San Juan, 1 ♂, 35 km N. Marayes, 14.XI.1982, col Roig- Alsina ( MACN). Paratypes: 11 ♂, same data of holotype ( MACN). Mendoza, 5 ♂, Lavalle, El Retamo, 11.XII.1979, col Roig-Alsina ( MACN). La Rioja, 1 ♂, 20 km N, 24.IX.1968, col Peña ( IFML); 5 ♂, Ruta 40, km 593 ca. Chilecito, 7.IV.2005, col Fidalgo P., Fidalgo G., Torréns ( MACN); 4 ♂, Ruta 141, km 104 ca. Marayes, 29.I.2006, col Fidalgo P. ( MACN); 1 ♂, Patquia ( MACN); 1 ♂, Famatina, 23.XI. 1975, col Stange ( IFML). Tucumán, 2 ♂, entre Amaicha y Santa María, 28.XI.2005, col Fidalgo P., Torréns ( MACN). Catamarca, 1 ♂, ca. Amaicha del Valle, Ruta 307 km 122, 2.XI.2005, col Fidalgo, Porter ( MACN).

Distribution. Argentina (Tucumán, Catamarca, La Rioja, San Juan, Mendoza).

Etymology. The species is named after Dr. Patricio Fidalgo, who collected numerous plumariids in Argentina.

Figures

FIGURE 19. Plumarius fidalgoi sp. nov., ♂. A, Head, frontal view; B, Head, ventral view; C, Head, lateral view; D, Genital capsule, ventral view. Scale bars = 0.5 mm.