Phycitiplex trichroma Porter, 2008

Porter, Charles C., 2008, New Phycitiplex Porter (Hymenoptera, Ichneumonidae) from Subandean Desert in northwest Argentina, Insecta Mundi 2008 (56), pp. 1-13 : 9-10

Phycitiplex trichroma Porter , new species

( Fig. 5 )

Description. Female Holotype. Color: much as in P. peralta except with no white below on scape, white flagellar band on segments 4-7; only a small white spot on face, white on pronotal collar and again well below on front margin of pronotum, only a narrow white band on apex of postpetiole, a little white apico-laterally on tergite 2, no white on tergites 5-7; fore and mid legs red, their coxae marked also with black and white, their trochanters, trochantelli, and femora bright red, tibiae and tarsi duller with slight dusky staining; hind leg red with a large white blotch on coxa and tibia and tarsi rather dusky.

Length of forewing 5.3 mm. Flagellum: first segment 6.6 times as long as deep at apex. Malar space 0.44 times as long as basal width of mandible. First gastric tergite: postpetiole rather weakly expanded, 1.2 times as wide at apex as long from spiracle to apex and with well developed micro-reticulation that fades out only near apex as well as with scattered faint punctures of small to medium size. Second gastric tergite: dully shining with very fine micro-reticulation throughout and with numerous obscure, well spaced medium sized to small punctures. Ovipositor: decurved, compressed, sheathed portion 0.63 a times s long as forewing; nodus well defined, a little raised; dorsal valve in profile falling off directly from nodus to apex; tip 0.20 times as high at notch as long from notch to apex.

Type material. Holotype female, ARGENTINA, La Rioja Province, Sierra de Velasco, Santa Vera Cruz , 1700 m, I-2002, P. Fidalgo, Malaise trap [ IMLA].

Relationships. This species may be recognized by its long, decurved ovipositor, relatively slender postpetiole, uniformly white upper metapleuron, and by its unusually long first flagellar segment (6.6 times as long as deep at apex).

Specific name. From the Greek prefix tri- (three) and the Greek noun chroma (color). This name is treated as a Greek neuter noun in apposition.

Figures

Figure 5. Phycitiplex trichroma, female, holotype. Santa Vera Cruz, La Rioja, Argentina. Lateral view of entire insect.