Camptopoeum nomadoides Spinola, 1851

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 : 20

Camptopoeum nomadoides Spinola, 1851 ,

monobasic and by original designation.

Spinoliella (Peniella) Toro and Ruz, 1972a: 146 . Type species: Camptopoeum maculatum Spinola, 1851 , by original designation. Synonymy after Michener (2000).

DIAGNOSIS: Spinoliella are most similar to Callonychium owing to the subparallel inner margins of the compound eyes and yellow markings on otherwise darker integument. Spinoliella can be differentiated from Callonychium by the absence of maculation on the genae (with a longitudinal yellow band in Callonychium ), cleft pretarsal claws in females (simple in Callonychium ), and antennal toruli positioned in lower third of face (in lower fourth of face in Callonychium ). Both genera can be separated from the related genus Arhysosage by the presence in the latter genus of ventrally divergent compound eyes, a broad metasoma (wider than mesosoma and sometimes wider than head: see Engel, 2000), and strongly incurved meso- and metatibial spurs in females.

DISTRIBUTION AND FLORAL ASSOCIATIONS: The genus is confined to Argentina and Chile (tables 1 and 3); individuals of 12 of the known species have been found at a wide variety of flowers ( table 4), although it is unknown whether these were to collect pollen or merely imbibe nectar. Considerable work is needed on the biology of Spinoliella in association with their flowers.

COMMENTS: Spinoliella are currently known from Argentina and Chile, although at least one species is known from no more than 35 km south of the Peruvian border and it is likely that the genus will be found in that country. The genus was revised by Toro and Ruz (1972a, 1972b) who initially recognized six species and two subgenera. Spinoliella longirostris , S. nomadoides , and S. psamita were grouped in the nominate subgenus, while the remaining species were placed in subgenus Peniella . Both subgenera were further characterized by Ruz (1991) and, although they can be recognized on the basis of morphological characters in both sexes, Michener (2000, 2007) considered them unnecessary given the small number of species and that they are not very distinct from each other. Subsequent to Toro and Ruz’s (1972a, 1972b) account, several species have been described ( Toro, 1995; Rodríguez et al., 2001; Compagnucci, 2015), bringing the diversity known prior to the present work to a total of 13 species (table 2), although one is newly synonymized herein. Of these additional species, all were ascribed to one of the two subgenera except for the four Argentinean species described by Compagnucci (2015), as they appeared to intermingle characters from both subgenera. Although our analysis supported the two subgenera as monophyletic, the distinctions remain minor and we do not advocate their reinstatement at this time.

Key to Species of Spinoliella

FEMALES

1.Apex of pygidial plate narrowly rounded or truncate, not bifid............................................2

–Apex of pygidial plate bifid.................................6

2(1) Outer metatibial spur straight or nearly so, about same thickness and with similar fine branches as on inner spur; mesoscutum and mesoscutellum largely impunctate, with few, scattered punctures ( Argentina)..................... .................................. S. obscura Compagnucci