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



44. Tetrapedia fraterna Cress. 



1878. Tetrapedia fraterna Cresson, <^, Trans. Amer. Entom. Soc, VII, pag. i36. 



»cT. 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 duU testaceous 

 beneath; mesothorax smooth and shining; wings fuscous, apex broadly 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 

 So inch. (= 8 Mm. lang"). 



»Mexico (Sumichrast), 2 d". 



45. Tetrapedia plumipes Sm. 



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



»5. Length 4^/3 lines. The head and thorax black, the abdomen yellow, with 

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

 the last black at their tips; antennae feri^uginous; 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 Dasjrpoda 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^/2 Mm. lang). 



»Amazons, Ega.« 



46. Tetrapedia piinctifrons Sm. 



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



»9. Length 3^/^ hnes. 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.« 



Annalcn dos k. k. naturhistorischün Hotmuseums, Bd. XVI, Heft 3, 189g. 22 



