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Eucera chrysophila (Cockerell, 1914)
Tetralonia chrysophila Cockerell, 1914; Synhalonia chrysophila (Cockerell, 1914)

Life   Insecta   Hymenoptera   Apoidea   Apidae   Eucera
Subgenus: Synhalonia


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Identification
Extracted from: Timberlake P.H., (1969). A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology Volume 57

Cockerell compared chrysophila with aragalli, but I believe that it is much closer to chrysobotryae. Both species have the apical depression of second tergite rela¬tively bare or exposed across the middle, with thin, appressed black hair. Chryso¬phila differs in having the scopal hair of hind legs much paler or ochreous, and the white abdominal bands much broader.

Female.—Black; small joints of tarsi and hind basitarsi ferruginous; flagellum dark fer¬ruginous beneath toward apex. Anterior middle of clypeus with a small ferruginous spot in type. Tegulae dark amber, fuscous toward base. Wings dusky, nervures dark ferruginous, subcosta black. Pubescence moderately long and dense, pale ochreous, whiter beneath and on head and tergite 1 of abdomen. Hair of tergites 2 to 5 short and appressed, with longer, erect dark hairs interspersed on disks. White bands on tergites 2 to 4 broad, that on tergite 2 covering most of disk, broadly receding from apical margin across the middle, with thin, appressed black hairs on apical depression and black hair very narrowly exposed at base. Base of tergites 3 and 4 more broadly black; band on tergite 4 covering about apical half of disk, and angularly widened in middle. Hair of tergite 5 black, apical band brown in middle, tipped with black, and white on each side. Hair on each side of pygidial plate brown. Hair of venter brown, with tuft of white hair on each side of sternites 2 to 5. Hair of legs white, scopal hair of hind legs ochreous, and hair on inner side of basitarsi ferruginous.

Head much broader than long; inner orbits of eyes parallel. Vertex only slightly impressed on each side; lateral ocelli their distance apart from nearest eye. Proboscis rather short, galeae minutely tessellate, dullish, and nearly hairless. Clypeus rather finely, closely, and subrugosely punctured. Mesoscutum dull, with close, shallow punctures. Apical depression of tergite 1 broadly bare and impunctate; exposed middle part of apical depression of tergite 2 narrowly bare in margin, otherwise with rather thin, minute punctures, set with appressed hairs. Second sub-marginal cell receiving recurrent nervure about one-fifth of its length from apex. Pygidial plate somewhat longer than basal width and narrowed about one-half to rounded apex. Length about 11 mm, anterior wing 9.5 mm, width of abdomen 5.5 mm.


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Updated: 2024-04-19 22:32:04 gmt
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