Hypanthidioides (Michanthidium) albitarsis (Friese, 1917) Friese, 1917

Gonzalez, Victor H. & Griswold, Terry L., 2011, Taxonomic notes on the small resin bees Hypanthidioides subgenus Michanthidium (Hymenoptera, Megachilidae), ZooKeys 117, pp. 51-58 : 53-54

Hypanthidioides (Michanthidium) albitarsis (Friese, 1917) comb. n. Figs 1-5

Anthidium albitarse Friese 1917: 345 (Holotype: ZMB; ♂, San José, Costa Rica)

Gnathanthidium sakagamii Urban 1993 [1992]: 339 (Holotype: DUZP; ♂, Foz do Iguaçu, Parana, Brazil), new junior synonym

Diagnosis.

Hypanthidioides albitarsis differs from Hypanthidioides ferrugineus in the finer punctures on the scutum, scutellum and terga (Figs 4 and 5). The female can be further recognized by the absence of a median spine on the preapical carina of T6. Additional characters that distinguish the male include: hind coxa with midapical spine (Fig. 3), S2-S4 with incomplete, poorly developed premarginal hair bands, T6 with small sublateral spine (barely visible in Fig. 5), and T7 without median spine (Fig. 5).

Comments.

Michanthidium is currently known from southern South America; the holotype of Hypanthidioides albitarsis , if from Costa Rica, would considerably extend its geographi cal distribution. Such an expansion is possible considering that other bee genera, such as Duckeanthidium Moure and Michener, previously thought to be restricted to South America, have been recently found in Central America ( Michener 2002). Alternatively, it might represent a mislabeled specimen because other examples of inaccurate locality labels on specimens in the Friese collection exist. For example, Dasycolletes ventralis Friese (now in the colletid genus Leioproctus Smith) is a South American species described by Friese from Sydney, Australia ( Michener 2007: 154). Further support for mislabeling comes from the absence of Michanthidium in more than 38,000 specimens of bees from Costa Rica that we have examined.

Distribution.

Hypanthidioides albitarsis is known from southern Brazil and adjacent Argentina Urban (1993). Additional records are from the departments of Iguazú, Veinticinco de Mayo, and Candelaria in the Province of Misiones, Argentina (see below).

Material examined.

(n = 12♀, 8♂) 10♀, 7♂; Argentina: Misiones, Cataratas del Iguazú, 5.9.XI.1970, C. Porter, L. A. Stange; remaining specimens also from Misiones but from the following localities: 1♀, Loreto, A. A. Oglobin; 1♀, Dos de Mayo, 12.73, Fritz; 1♂, San Javier, 20.XI.1973, Willink-Tomsoc (BBSL, FSCA).