OCR Text |
Show 1871.] ON N E W INSECTS FROM YUNAN. 249 it differs in being covered with a short glittering pilosity, and its clypeus is smooth, shining, and impunctate. 2. BOMBUS IMPETUOSUS, Smith, n. sp. (Plate XVIII. fig. 8.) Female. Black ; the pubescence on the head black. The thorax above and at the sides clothed with a rich fulvous pubescence; the disk with black pubescence between the wings ; the apical joints of the anterior and intermediate tarsi and the posterior pair entirely obscure rufo-piceous; the posterior tibiae have their outer margin of the same colour, but brighter ; wings dark brown. Abdomen: the basal segment is covered above with bright pale fulvous pubescence, the two following segments have a clothing of black pubescence, and the three apical ones of red. Length 9 lines. The worker is clothed like the female, but the fulvous pubescence is brighter and paler, and it varies in size from 8 to 10 lines. 3. APIS LABORIOSA, Smith, n. sp. (Plate XVIII. fig. 7.) Worker. Black ; the vertex shining and having some long black pubescence; the face just above the insertion of the antennae with fulvous pubescence; the eyes have a short black pubescence and a few scattered punctures; the cheeks covered with pale fulvous pubescence. Thorax clothed with fulvous pubescence, which is palest beneath and on the inferior margins of the anterior and intermediate femora; the posterior femora more thinly fringed with pale fulvous pubescence; the posterior tibiae and the basal joint of the tarsi fringed with black pubescence; the superior wings slightly smoky or fuscous, darkest in the marginal and first submarginal cell. Abdomen almost naked, but with a little fulvous pubescence on the margin of the basal segment; the truncation of the basal segment covered with fine short downy fulvous pubescence; the apex of the abdomen with a little black pubescence. Length 8 lines. I cannot but consider this a distinct species from all that have hitherto been described. I am not desirous of increasing the number ; but, after a careful examination of the characters in which specific distinctions are to be found, I will point out in what this Bee differs from both A. dorsata and A. zonata, both of which agree with it in size. The ocelli are smaller and more distant from the compound eyes; and it has only twelve transverse rows of bristles on the inner surface of the posterior metatarsus, exclusive of that on its apical margin. In A. dorsata the abdomen is covered above with a short downy pubescence; this Bee has the abdomen naked, and there is not a trace of bands of pubescence at the basal margins of the segments, as in A. zonata. DESCRIPTION OF PLATE XVIII. Fig. 1. Syntomis andersoni, p. 244. 2. atkinsoni, p. 245. 3. fytchei, p. 246. 4. grotei, p. 245. Fig. 5. Syntomis sladeni, p. 245. 6. Vespa bellona, p. 248. 7. Apis laboriosa, p. 249. 8. Bombus impetuosus, p. 249. |