Coelioxys (Synocoelioxys), MITCHELL, 1973

Rocha Filho, Léo Correia Da & Packer, Laurence, 2017, Phylogeny of the cleptoparasitic Megachilini genera Coelioxys and Radoszkowskiana, with the description of six new subgenera in Coelioxys (Hymenoptera: Megachilidae), Zoological Journal of the Linnean Society 180 (2), pp. 354-413 : 405

publication ID

https://doi.org/10.1111/zoj.12484

DOI

https://doi.org/10.5281/zenodo.14807013

persistent identifier

https://treatment.plazi.org/id/03EC8792-CC27-7159-7FD7-1689081DAC2B

treatment provided by

Plazi

scientific name

Coelioxys (Synocoelioxys)
status

 

COELIOXYS ( SYNOCOELIOXYS) MITCHELL, 1973

Type species: Coelioxys texana Cresson, 1872 .

Diagnosis: This is the only Coelioxys subgenus and perhaps the only members of the Megachilini in which the male S7 is bilobed ( Fig. 94H) rather than divided into two small sclerites ( Baker, 1975: fig. 26D). Some characteristics such as the scale-like pubescence in parts of the body ( Fig. 32 View Figures 32–34 ), the inner ramus of pretarsal claws in females acute ( Fig. 36 View Figures 35–37 ), and apicodorsal processes of T 6 in males forked ( Fig. 34 View Figures 32–34 ) are shared only with species of the Old World subgenus C. ( Allocoelioxys). Species belonging to C. ( Synocoelioxys) are characterized by the following combination of characteristics that separates them from all other subgenera. Median ocellus surrounded by a swollen and nearly impunctate area ( Fig. 32 View Figures 32–34 ). Female: lateral margins of T 6 apex with long thick hairs forming an inconspicuous fringe ( Fig. 33 View Figures 32–34 ); S6 rounded or elliptical, not notched and straight ( Fig. 33 View Figures 32–34 ), not flexed downwards. Male: T 6 apicodorsal processes forked, with processes flattened, pointed, and irregular, almost forming a crenulate plate ( Fig. 34 View Figures 32–34 ), and T 7 exposed, with a long median tooth-like process medially ( Baker, 1975: fig. 13A).

Comments: Species of C. ( Synocoelioxys) are primarily Nearctic; five of them were revised and keyed by Baker (1975); another two, Coelioxys toltecoides Cockerell, 1923 from Mexico and Coelioxys tegularis Cresson, 1869 from Cuba, are also assigned to the subgenus ( Ascher & Pickering, 2015).

List of species: Coelioxys alternata Say, 1837 , Coelioxys apacheorum Cockerell, 1900 , Coelioxys erysimi Cockerell, 1912 , Coelioxys hunteri Crawford, 1914 , C. tegularis *, C. texana , and C. toltecoides .

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Megachilidae

Genus

Coelioxys

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