Hylaeus (Gnathoprosopis)

Hylaeus amiculinus, copyright Karen Retra.

Belongs within: Hylaeinae.

The subgenus Gnathoprosopis of the genus Hylaeus is a group of bees characterised by short, apically broad mandibles (Michener 1965).

Characters (from Michener 1965): Mandibles short and very broad, usually broadest apically, less than twice as long as broad, owing largely to expansion of inner apical tooth to form a broadly rounded or truncated apical margin; preoccipital carina present; interantennal distance greater than clypeo-ocular distance; subantennal suture one to nearly two times as long as diameter of antennal socket. Claws with prongs parallel; stigma three-fourths as long as costal edge of marginal cell or less, free part of cell much longer than, in some cases more than twice as long as, rest of cell and longer than distance from apex of cell to wing tip; apex of cell almost on wing margin or distinctly separated from it; second submarginal cell less than half as long as first, receiving both recurrent veins or first received near end of first submarginal cell; dorsal margin of pronotum and pronotal lobes usually with a turgid aspect; propodeum with horizontal surface half as long as vertical surface, as seen in profile, triangle with one-third to one-half of its length on vertical surface; horizontal part of propodeum areolate and separated by carina from vertical surface; seventh sternum of male with one pair of apical lobes large, the other small and inconspicuous; eighth sternum with lateral parts produced posteriorly on each side of base of median process.

<==Hylaeus (Gnathoprosopis Perkins 1912)M65
    |--H. (G.) euxanthus (Cockerell 1910)M65 (see below for synonymy)
    |--H. (G.) albonitens (Cockerell 1905) [=Prosopis albonitens]M65
    |--H. (G.) amiculiformis (Cockerell 1909) [=Prosopis amiculiformis]M65
    |--H. (G.) amiculinus (Cockerell 1922) [=Gnathoprosopis amiculina]M65
    |--H. (G.) amiculus (Smith 1879)M65 [=Prosopis amiculaM65, Gnathoprosopis amiculaR35]
    |--H. (G.) asinellus (Cockerell 1913)M65 [=Prosopis asinellaM65, Gnathoprosopis asinellaR35]
    |--H. (G.) chromaticus (Cockerell 1912) [=Prosopis chromatica; incl. P. albipes Friese 1924 non Panzer 1809]M65
    |--H. (G.) hackeri (Cockerell 1912) [=Gnathoprosopis hackeri]M65
    |--H. (G.) maculatus (Rayment 1929) [=Gnathoprosopis nigritasus maculatus]M65
    |--‘Gnathoprosopis’ marianellaR35
    |--H. (G.) millariellus (Rayment 1953) [=Gnathoprosopis millariella]M65
    |--H. (G.) nigritarsus (Rayment 1929) [=Gnathoprosopis nigritarsa]M65
    |--H. (G.) rowlandi (Cockerell 1914) [=Gnathoprosopis rowlandi]M65
    |--H. (G.) simpliciventris (Cockerell 1922) [=Gnathoprosopis simpliciventris]M65
    |--H. (G.) theodorei (Perkins 1912) [=Gnathoprosopis theodorei]M65
    |--H. (G.) volatilis (Smith 1879) [=Prosopis volatilis]M65
    `--H. (G.) xanthocollaris (Rayment 1935) [=Gnathoprosopis xanthocollaris]M65

Hylaeus (Gnathoprosopis) euxanthus (Cockerell 1910)M65 [=Prosopis euxanthaM65, Gnathoprosopis euxanthaR35; incl. P. xanthopoda Cockerell 1910M65, *G. xanthopodaM65]

*Type species of generic name indicated

References

[M65] Michener, C. D. 1965. A classification of the bees of the Australian and South Pacific regions. Bulletin of the American Museum of Natural History 130: 1–362.

[R35] Rayment, T. 1935. A Cluster of Bees: Sixty essays on the life-histories of Australian bees, with specific descriptions of over 100 new species. Endeavour Press: Sydney.

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