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قراءة كتاب Bees from British Guiana Bulletin of the AMNH, Vol. XXXVIII, Art. XX, pp. 685-690

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Bees from British Guiana
Bulletin of the AMNH, Vol. XXXVIII, Art. XX, pp. 685-690

Bees from British Guiana Bulletin of the AMNH, Vol. XXXVIII, Art. XX, pp. 685-690

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دار النشر: Project Gutenberg
الصفحة رقم: 4

an obscure linear interruption.

Melipona fasciata barticensis Cockerell.—One specimen has five linear red bands on abdomen, but in another the bands are very indistinct, almost obsolete.

Melipona intermixta Cockerell.—The ground color of the first three abdominal tergites varies; in the lighter forms that of the first is pale fulvous with the shoulders blackish, of the second and third clear ferruginous.

Euglossa singularis Mocsáry.—Judging from the brief description, it appears that E. meliponoides Ducke is probably the same species.

Euglossa decorata Smith, var. ruficauda, new variety

Both sexes with abdomen ferruginous, apically more or less dusky, but the whole effect lighter and redder than typical; scutellum green with the hind margin red. Tuft on female scutellum light fulvous. The female, from Kalacoon, (Hym. 212) is the type of the variety.

Euglossa ignita Smith, var. chlorosoma, new variety

Green, without coppery tints, but variably suffused with purple. It is smaller than E. piliventris, with shorter mouth-parts, and the labrum pallid with a pair of dusky spots. A male in the U. S. Nat. Museum from Bartica, which I reported as E. piliventris, belongs here. Female E. piliventris has long yellow hairs on the anterior margin of hind basitarsus, but in chlorosoma the hair in this situation is black. The type of the variety is a female labelled Hym. 140. A female from Kalacoon has brassy and coppery tints on the apical part of abdomen, and must be referred to E. ignita proper. The type locality of ignita is Jamaica.

Ceratina læta Spinola. This was described from the female. The specimen sent is a male, and differs from the female in being smaller, and having a transverse band on anterior margin of clypeus, triangular marks on lower corners of face, and a large patch (emarginate above) on labrum all ivory-white. This is very like C. viridula Smith, which Ducke considers a synonym of læta, but the base of the metathorax seems to differ, and the nervures are piceous. For the present, therefore, I retain C. viridula as a distinct species. The female of C. viridula, collected by Busck in the Panama Canal Zone, is also distinguishable from that sex of C. læta.

Epicharis maculata var. barticana, new variety

♀.—Base of mandibles with a large cuneiform yellow mark; a broad black band down each side of labrum; yellow spots on prothorax large; scutellum with a pair of large transversely oval yellow areas, separated by a narrow black band; band on second abdominal segment with a posterior median projection. Kalacoon, 1916. (Hym. 217.)

Rhathymus beebei, new species

♀.—Length about 22 mm., anterior wing 18 mm.; head clear ferruginous, with red hair, lower part of face more pallid, with a creamy tint; apical half of mandibles black; clypeus prominent, minutely roughened, with a smooth median line; mesothorax black, with a median ridge, the surface on each side of this strongly punctured, but shining between the punctures; rest of thorax ferruginous, and all of thorax with ferruginous hair; scutellum not bigibbous, but with an elevated transverse ridge; pleura with a blackish area below the wings; lower part of mesopleura with a shining tubercle; tegulæ clear ferruginous, finely punctured; wings strongly reddened; legs clear ferruginous; abdomen fusiform, shining; first two segments dull reddish, pallid posterolaterally, the others reddish black, with the hind margins redder; apical plate very large, concave. Bartica District (Hym. 19). Very distinct by the transverse straight ridge on scutellum; nearest perhaps to the considerably smaller R. unicolor Smith, but that has dark fuscous wings. The antennæ are unfortunately missing.

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