Megachile (Zonomegachile) reliqua Mitchell

Gonzalez, Victor H., Griswold, Terry & Engel, Michael S., 2018, South American Leaf-Cutter Bees (Genus Megachile) Of The Subgenera Rhyssomegachile And Zonomegachile, With Two New Subgenera (Hymenoptera: Megachilidae), Bulletin of the American Museum of Natural History 2018 (425), pp. 1-73 : 1-73

publication ID 10.1206/00030090-425.1.1


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Megachile (Zonomegachile) reliqua Mitchell


Megachile (Zonomegachile) reliqua Mitchell ,

resurrected status

Figures 21 View FIGURE 21 , 32 View FIGURE 32

Megachile reliqua Mitchell, 1930: 260 (neotype [here designated] ♀, NCSU 0007194,

Buenavista, Santa Cruz, Bolivia). Mitchell,

1933: 303 (placement in Melanosarus Mitchell ).

DIAGNOSIS: This species is easily recognized by the following combination of features: mesoscutum weakly imbricate, nearly smooth and shiny among setiferous punctures; dorsum of mesosoma with light reddish-brown pubescence; pro- and mesobasitarsi at least about 3.0× longer than broad (fig. 32D); and S5 and S6 with yel- lowish setae. The punctation of the mesoscutum and elongate pro- and mesobasitarsi with sparse pubescence easily distinguishes this species from all other Zonomegachile .

DESCRIPTION: Neotype, Female: As described for M. durantae except as follows: total body length 14.5 mm; forewing length 10.8 mm; head width 4.6 mm. Interocellar distance 2.4× OD, about as long as ocellocular distance; clypeus with distal margin gently emarginate medially, nearly straight; scape 3.8× longer than broad. Probasitar- sus 3.3× longer than broad; mesobasitarsus 2.9× longer than broad; metatibia 3.4× longer than broad; metabasitarsus 3.2× longer than broad.

Body color dark reddish brown except: tegula yellowish; face, vertex, gena, mesosoma excluding legs black; discs of T2–T6 dark brown to black. Wings slightly more yellow than those of M. durantae .

Paraocular area, vertex, pronotal lobe, and margins of mesoscutum with yellowish setae. Sides of propodeum and terga with white setae, whitish on sides of T3 and T4. S3 and S4 basally with white setae, distally with light brown setae, S5 and S6 with yellowish setae. Outer surfaces of pro- and mesotibiae, and pro- and mesobasitarsi with sparser, longer setae than in M. durantae , not forming distinct brushes.

Head and mesosoma weakly imbricate to nearly smooth and shiny between large setiferous punctures. Clypeus and supraclypeal area more densely and coarsely punctate than in M. durantae .

NEOTYPE (here designated): ♀, Buenavista, Dep. Sta. Cruz, Bolivia, 450 m. h./QR barcode NCSU 0007194/ Megachile reliqua Mitchell , Paratype (greenish label)/ Neotype, Megachile reliqua Mitchell , des. V.H. Gonzalez, M.S. Engel, & T. Griswold 2016. Mitchell (1930) described this species from two female specimens collected in Buenavista, Santa Cruz, Bolivia. The holotype was lost during World War II (see Material and Methods, above), and in order to stabilize the identity of the species and the name applied to it, we herein designate as neotype the only paratype.

ADDITIONAL MATERIAL EXAMINED: 1♀, Brasil: Guapore, Pimienta Bueno, November 1960 (M. Alvarenga)/ SEMC 1204767 ( SEMC).

DISTRIBUTION: Bolivia (Santa Cruz), Brazil (Rio Grande do Sul) (fig. 21).


North Carolina State University Insect Museum


University of Kansas - Biodiversity Institute