Monographie der Bienengattungen Exomalopsis, Ptilothrix, Melitoma und Tetrapedia. 3o3 



44. Tetrapedia fraterna Cress. 



1878. Tetrapedia fraterna Cresson, d\ Trans. Amer. Entom. Soc, VII, pag. i36. 



»cf. Black, shining, the pubescence black, that on the face, labrum and cheeks 

 silvery-white; narrow orbital line on face, one on lower posterior orbits, clypeus, trans- 

 verse line above, labrum, mandibles except tips, scape beneath, line on collar, dot on 

 tegulae anteriorly, dot on four anterior knees, and tips of tarsi, all yellowish-white; 

 face above antennae somewhat prominent medially and punctured, clypeus and middle 

 of face beneath antennae with large, rather deep punctures; flagellum dull testaceous 

 beneath; mesothorax smooth and shining; wings fuscous, apex broadlv hyaline, second 

 submarginal cell receiving the recurrent nervure between middle and apex; legs clothed 

 with black pubescence, basal Joint of tarsi broad and fringed behind with rather long 

 dense black pubescence, tibial spurs slender, black; abdomen piceous, smooth and 

 polished, the pubescence at apex more or less intermixed with pale; venter with pu- 

 bescence pale, the second and third segments more or less marked with whitish. Length 

 3o inch. (= 8 Mm. lang). 



»Mexico (Sumichrast), 2 cf. 



45. Tetrapedia plumipes Sm. 



187g. Tetrapedia plumipes Smith, g, Descr. New Spec. Hymen., pag. 12g, Nr. 5. 



»g. Length 4 1 /,, lines. The head and thorax black, the abdomen yellovv, with 

 black markings: legs pale ferruginous. The clypeus, labrum and mandibles yellow; 

 the last black at their tips; antennae ferruginous; the base of the clypeus more or less 

 black; the front with short pale fulvous pubescence, the clypeus naked. The thorax 

 above with short fulvous pubescence, that on the sides and beneath paler; wings hyaline, 

 the nervures, stigma, and tegulae pale ferruginous; the pubescence on the legs fulvous, 

 that on posterior pair long and dense, as in Dasypoda hirtipes. Abdomen oblong; the 

 basal segment with four ovate black spots, two placed laterally and near the apical 

 margin of the segment, and two minute ones in a line with the others; at the basal 

 margin of the other segments a broad black fascia, which emits a semicircular black 

 mark on each side, in a line with the two ovate black spots on the basal segment; 

 beneath yellow (= g z / 2 Mm. lang). 



»Amazons, Ega.« 



46. Tetrapedia punctifrons Sm. 



187g. Tetrapedia punctifrons Smith, g, Descr. New Spec. Hymen., pag. i3o, Nr. 8. 



»g, Length 3 3 / 4 lines. Head and thorax reddish yellow, the abdomen pale ferru- 

 ginous. The clypeus and a triangulär space above coarsely punctured, the clypeus pale 

 yellow towards the apex; the antennae fuscous above beyond the third Joint; a black 

 stripe on each side of the face at the inner orbits of the eyes, towards their summit. 

 The prothorax marginate posteriorly; wings hyaline, the nervures and stigma pale ferru- 

 ginous; the posterior legs with a dense scopa of long pale, nearly white, pubescence. 

 Abdomen with pale yellow fasciae at the basal margins of the segments, the fasciae much 

 attenuated in the middle (= 8 Mm. lang). 



»Brazil, Santarem.« 



Annalen des k. k. naturhistorischen Hofmuseums, Bd. XVI, Heft 3, 1899. 22 



