Spinoliella tadeyi Compagnucci

Gonzalez, Victor H., Smith-Pardo, Allan H. & Engel, Michael S., 2017, Phylogenetic Relationships Of A New Genus Of Calliopsine Bees From Peru, With A Review Of Spinoliella Ashmead (Hymenoptera: Andrenidae), Bulletin of the American Museum of Natural History 2017 (412), pp. 1-72 : 65-67

Spinoliella tadeyi Compagnucci

Figure 21

Spinoliella tadeyi Compagnucci, 2015: 79 (holo-

type ♀, MACN: Neuquén, Argentina).

DIAGNOSIS: This Argentinean species can be recognized easily by the following combination of features: small body size (~ 4 mm); female mesobasitarsus robust, 2.6× longer than broad (fig. 21C); metabasitibial plate of both sexes slightly depressed, asetose on disc, delimited by weak border (fig. 21D); female pygidial plate broad, with lateral margins converging toward apex at a 50° angle, apically bifid; frons, mesoscutum, mesoscutellum, and propodeum with minute, contiguous punctures (fig. 21B); and metasoma predominantly yellowish in the female, with dark brown bands on discs of T2– T4, that of male mainly dark brown with lateral maculation on basal four terga. Both sexes of this species resemble S. aidae in the small body size, bifid female pygidial plate, and coloration, but in the latter species the integument of the head and mesosoma is smooth, shiny, and largely impunctate.

MATERIAL EXAMINED (n = 6♀♀, 21♂♂): ARGENTINA: Chubut: 1♀, 1♂, Chubut, Sarmiento, 24 km W, 45°32.17′S, 69°17.62′W, 310 m, 21–31 Dec 2006, M.E. Irwin, malaise trap, FDP88795 ( BBSL); 1♀, 1♂, Rada Tilly, -45.9639, -67.5734, 19.xii.05 [19 December 2005], AI Gravel, Rocha J (1♂ PCYU, 1♀ SEMC); 5♂♂, 8 km S of Rada Tilly, -45.9845, -67.6056, 30 m, 24.xi.2003 [24 November 2003], L. Packer (4♂♂ PCYU, 1♂ SEMC); Santa Cruz: 3♂♂, Santa Cruz, Los Antiguos, 18.xi.06 [18 November 2006], pan traps ( PCYU); 1♀, 1♂, Estancia La Serena, near Los Antiguos, S46°37.044′, W71°16.133′, 26.xi–19. xii.05 [26 November–19 December 2005], pan trap, AI Gravel ( PCYU); 1♀, 7♂♂, near Los Antiguos, -46.6174, -71.2687, 17.xii.05–01.i.06 [17 December 2005 – 1 January 2006], pan traps, AI Gravel ( PCYU); 1♀, 1♂, 25 km E of Los Antiguos, -46.6195, -71.3047, 250 m, 17–19. xi.2003 [17–19 November 2003], L. Packer (1♀ PCYU, 1♂ SEMC); 1♀, 2♂♂, same as previous except 46°37′187″S, 71°18′322″W, 250 m, 01. iii.2007 [1 March 2007], blue vane trap, AI & M Gravel ( PCYU).

DISTRIBUTION: Argentina: Chubut, Neuquén, Santa Cruz. This species was previously known from Neuquén (see Compagnucci, 2015) but is recorded here from two further provinces.

Figures

FIGURE 21. Female of Spinoliella tadeyi Compagnucci from Santa Cruz, Argentina (PCYU). A. Detail of frons. B. Detail of mesoscutum, mesoscutellum, and metanotum in dorsal view. C. Mesobasitarsus. D. Metabasitibial plate.