Gastrodynerus yungaensis Grandinete & Carpenter, 2019

Grandinete, Yuri Campanholo, Cortes, Gustavo Bellini & Carpenter, James Michael, 2019, On the genus Gastrodynerus Bohart, 1984 (Hymenoptera: Vespidae: Eumeninae), Zootaxa 4671 (2), pp. 240-250 : 243

Gastrodynerus yungaensis Grandinete & Carpenter , sp. nov.

( Figs 5 , 15, 20 , 26)

Comments and diagnosis. Gastrodynerus yungaensis may be readily identified by the weak and homogeneously distributed punctures on T1 ( Fig. 15 ) and by having T2 covered with weak and shallow punctures near the pre-apical region ( Fig. 20 ).

Description. Holotype female

Color: Same as Gastrodynerus guatemalensis , except for smaller spots on clypeus; posterior portion of metanotum black; dorsal and posterior surface of propodeum black, with yellow mark only on submarginal carina; yellow stripe only on apex of S1.

Pubescence: Same as Gastrodynerus guatemalensis , except on metanotum and posterior surface of propodeum which is brownish as well. Submarginal carina with some erect and whitish pubescence with longer bristles reaching the dorsolateral surface of propodeum.

Sculpture: Small and shallow punctures on clypeus, more concentrated on basal half; coarse and reticulate punctation on frons, vertex and upper half of gena (on basal half it becomes slightly separated), pronotum and mesoscutum; coarse (as in mesoscutum), but more separate punctures on scutellum and center region of metanotum (lateral region without punctures); row of coarser and deep punctures on anterior margin of scutellum. Posterior surface of propodeum with coarse (smaller than on mesoscutum) and reticulate punctation, except around the longitudinal carina where they become incipient. Lateral surface of propodeum with coarse and separate punctures. T1 with coarse (same size of propodeum) and separate punctures, homogeneously distributed, except on apical edge, where there are no evident punctures. S1 with sparse and weak punctures, more visible at the laterals. T2 with punctures weaker than T1, homogeneously distributed, becoming slightly stronger towards pre-apical region; apical region with a narrow stripe without punctures; S2 with the same pattern, except on the basal region (before the summit of the truncate area), where the punctures become incipient; T3–T5 with weak punctures on apical region; no evident punctures on T6; S3 with punctures the same size of S2 concentrated on the central portion; S4–S6 without evident punctures.

Structure: Clypeus wider than long, convex in lateral view, with two apical teeth; inter-antennal region longitudinally cariniform, with a deep pit right beside the carina, on lower half, and one adjacent to the antennal socket, on upper half; cephalic fovea present, close to each other; occipital carina well developed along gena, becoming weak- er on dorsal surface. Lateral pronotal carina present; pronotal carina on dorsal surface present, but interrupted on center region; pronotal fovea present; humeral region weakly projected; parategula lamelliform, flattened laterally; scutellum flattened; a longitudinal furrow on the dorsal surface of propodeum; longitudinal carina on posterior surface of propodeum uniform along all extension; submarginal carina fused to the propodeal valve, weakly projected and pointed; external margin of propodeal valve rounded; longitudinal carina on posterior coxa weakly projected, rounded; T1 as wide as long, strongly concave on central region, on lateral view; transverse carina on anterior region of S1; T2 longer than wide; S2 strongly truncate at the base; row of small teeth on apex of S6.

Male: Same color pattern, except for: clypeus smaller and yellow, except for a black stripe basally. F11 hookedshape, narrow, with the apex not surpassing the apex of F9. Male genitalia as in Figure 26 .

Variation: Clypeal concavity between two apical teeth often weaker; yellow clypeus marks often reduced; humeral region more projected, tooth-like. Some males may present small black marks on the center region of clypeus.

Etymology. The epithet is due to the region known as Yungas in Argentina, where the type was collected.

Distribution. Argentina (Jujuy, Salta, Tucuman).

Type material. The holotype female ( AMNH) of Gastrodynerus yungaensis is in good condition and bears the label: ‘ ARGENTINA: Jujuy /P. N. de Calilegua , 1620 m./ 23º39’34”S 64º55’51”W / 24 October 1994 / James M. Carpenter’ . One paratype female ( AMNH) is in good condition and bears the label: ‘ ARGENTINA; Tucumán / Piedra Tendida nr. El Cajon / 26º27’49”S 64º54’32”W / 25 Dec. 2004, 779m. / Carpenter & Davidson’ . Two paratype males ( AMNH) are in good conditions and bear the labels: ‘ ARGENTINA: Salta / Cuesta del Obispo /31 Km. W Chicoana / 22 Jan. 1989 2100m./ James M. Carpenter’; ‘ ARGENTINA: Jujuy /P. N. de Calilegua , 1620m./ 23º39’34”S 64º55’51”W / 24 October 1994 / James M Carpenter’ . One paratype female ( RAM) is in good condition and bears the label: ‘ ARGENTINA: El Rey Natl. Pk. / Rio Los Puestos, 880m. / 6–16-XII-1987, MT, FIT / Prosopis forest , S & J Peck’ . Two paratype males ( RAM), are in good condition and bear the labels: ‘ ARGENTINA: El Rey Natl. Pk. / Rio Los Puestos, 880m. / 6–16-XII-1987, MT, FIT /Prosopis forest, S & J Peck’; ARGENTINA: Salta Province / El Rey National Park, 900m / Rio La Sala , MT, FIT / 5–10-XII-1987, S. & J. Peck / Open streamside’.

Figures

FIGURES 1–8. Habitus from species of Gastrodynerus: 1: G. vanduzeei (Holotype, female); 2: G. stangei (Holotype, male); 3: G. tacubayae (Holotype, female—photo taken by Dr. Bernard Landry—Muséum d’Histoire Naturelle de Geneve [MNHN]); 4: G. searsi (Holotype, male); 5: G. yungaensis (Holotype, female); 6: G. guatemalensis (Holotype, female); 7: G. barretti (Holotype, female); 8: G. aimara (Holotype, male). Scale bar = 1mm.

FIGURES 15–21. 15: T1 of G. yungaensis; 16: T1 of G. searsi; 17: T1 of G. tacubayae; 18: T1 of G. barretti; 19: T1 of G. aimara; 20: T2 of G. yungaensis; 21: T2 of G. aimara. Scale bar = 1mm.

FIGURES 22–28. Male genitalia (aedeagus and paremere + volsella, respectively). 22: G. vanduzeei; 23: G. stangei; 24: G. searsi; 25: G. tacubayae; 26: G. yungaensis; 27: G. barretti; 28: G. aimara. Scale bar = 1mm.