Plumarius exophthalmus 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 : 457-458

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Plumarius exophthalmus Diez & Roig-Alsina

sp. nov.

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

( Figs 11 View FIGURE 11 A – D)

Diagnosis. This species is characterized by the transverse head with prominent ocelli, the lateral ones in frontal view crossed by an imaginary line tangent to the upper margin of the eyes. The supraclypeal area in lateral view is rounded, and F 1 approximately as long as distance between upper margin of clypeus and lower margin of median ocellus.

Description. Holotype, ♂. Body length 10.1 mm (paratypes 6.4–7.8 mm). Color. Body brown, with a darker spot between ocelli.

Head. 1.3 × wider than high in frontal view; wider in dorsal view than width of scutum between tegulae (5.5:5.0). OOD 1.2 × diameter of lateral ocellus; POD 0.8 × OOD. Antennocular distance 0.6 × diameter of torulus; interantennal distance 4.6 × antennocular distance. Vertex weakly reticulated, without striae, moderately punctate between lateral ocelli (punctures separated by 1 × puncture diameter). Torulus closer to lateral ocellus than to clypeus (1.3:3.0). Lateral ocelli in frontal view below upper margin of head. Median ocellus crossed by supratorular line ( Fig. 11 View FIGURE 11 A). Genal carina present, distinct. Length of area between preoccipital carina and suboral swelling subequal to suboral swelling (1.6: 1.4); this area without carinae; lower area of genal bridge close to mandibular articulation with weak carinae and without punctures ( Fig. 11 View FIGURE 11 B). Lengths of malar area and apical width of F 1 equal (0.7: 0.7); malar area anteriorly striate. Supraclypeal area with lateral striae and densely punctate ( Fig. 11 View FIGURE 11 C). Epistomal suture evident. Clypeus 1.2 × wider than high, densely punctate; with lateral striae and apically pointed. Proportion of lengths of segments of maxillary palp, from base to apex: 14: 13: 29: 24: 22: 17. Scape without swelling or projection. F 1 4.1 × as long as its apical width, subequal to scape and pedicel combined (2.9: 2.8).

Mesosoma . Area anterior to pronotal lobe weakly striate; pronotal lateral carina distinct, forming a lower pocket. Notaulus weakly marked, as long as admedian line. Anterior surface of scutum moderately punctate. Propleuron and mesopleuron scarcely punctate. Metaposnotum with striae reaching posterior margin. Propodeum transverse, swollen behind spiracle; without carina anterior to spiracle. Fore wing: marginal cell with anterior margin 2.3 × as long as posterior margin; vein Rs 3 shorter than vein Rs 4 (3.2: 4.3); vein M separated from cu-a by 0.2 × length of cu-a; discal cell rectangular. Hind wing: M and cu-a interstitial. Protarsomere 1 with four outer lateral spines; metatarsomere 1 1.3 × as long as mesotarsomere 1; inner metatibial spur 1.6 × as long as outer spur.

Metasoma. T 7 triangular, apically pointed and with a polished apical margin. Genitalia as in Fig. 11 View FIGURE 11 D.

Examined material. Holotype, ♂. ARGENTINA, La Rioja, 1 ♂, Chilecito, 1.III. 1969, col Willink, Terán, Stange ( IFML). Paratypes: 1 ♂, same data of holotype ( IFML); 2 ♂, Chilecito, Anguiñan , 1–15.II. 1969, col Willink, Terán, Stange ( IFML); 1 ♂, Ruta 40, km 593, ca. Chilecito , 7.IV. 2005, Fidalgo P., Torréns ( MACN). Catamarca, 1 ♂, Belén 10 km E, Ruta 46 , 3.XI. 2005, col Fidalgo P., Porter ( MACN).

Distribution. Argentina (La Rioja, Catamarca).

Etymology. The specific epithet from the Greek, exophthalmos, refers to the prominent ocelli.




Argentina, Buenos Aires, Museo Argentina de Ciencias Naturales


Museo Argentino de Ciencias Naturales Bernardino Rivadavia