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57. 92 Chalcididae (91.1) 



Descriptions of New Genera and Species 

 of Chalcididae. 



Collected by Mr. John Hewitt, B. A. in Borneo. 

 By P. Cameron. 



Stireurytoma, gen. nov. 



Antennae joints elongate, clearly separated, covered 

 all over with long hair. Metathorax as long as the 

 scutellum, the centre distinctly depressed, longer than 

 wide, the depression margined by keels; the apical 

 slope steeply oblique, with the sides stoutly keeled; 

 on the basal part is a large spiracular area and 2 

 apical ones of equal size. Pronotum as long as the 

 mesonotum, rounded and raised above the latter, which 

 has not very deep parapsidal furrows the central area 

 triangular; scutellum roundly convex. Abdomen with a 

 long curved petiole about one third longer than the 

 hinder coxae; the dilated apical part of the abdomen 

 is compressed. The eyes on the inner side and 

 the lower two-thirds of the outer sides surrounded 

 by a stout keel, inside of which is a furrow. Front 

 with a shallow, but distinct furrow, with the sides 

 margined; the ocelli are in a curve immediately above 

 this furrow. Hind tibiae with 2 apical spurs. Head and thorax 

 umbilicately punctate. Marginal vein 3 times longer than the 

 stigmal, the post-stigmal one half longer than the stigmal. 



The malar space is half the length of the eyes. 

 The meso- and metapleurae are bordered below by 

 a keel. Abdominal petiole bordered above by 2 keels. 

 Occiput not margined, roundly broadly incised. First 

 joint of the flagellum shorter than the scape. The 

 2nd and 3rd abdominal segments united are shorter 

 than the 4th, which is the longest segment. 



In the System of Ashmead. (Mem. Cam. Mus. l, 

 2(>i) this genus would come nearest to Eurytoma, 

 from which it may be known by the joints of the 

 antennae being longer, narrower and not distinctly 

 narrowed at the base, by the margined base of pronotum, 

 areolated metanotum and longer marginal and shorter 

 post-marginal nervures. 



Stireurytoma carinata, sp. n. 



Black, covered with longish white hairs, except 

 on the abdomen, the basal two-thirds of the antennal 

 scape and the legs, except the coxae, rufo-testaceous, 

 the pubescence on the face distinctly tinged with 

 golden. Head and thorax closely umbilically punctured, 

 the head more finely than the thorax, the scutellum 

 more strongly than the mesonotum ; the central de- 

 pression of the metanotum widely transversely striated ; 

 the outerside of the metanotum reticulated; the base 

 of the metapleurae with 3 smooth areas, the top and 

 bottom one rounded on the outerside, the central 

 larger, of equal width, longer than wide; the rest of 

 the metapleurae closely reticulated and densely covered 

 with white pubescence, as is also the mesonotum. 

 Wings hyaline, tinged with fulvous, especially on the 

 basal half, the nervures pale testaceous. $. Length 6 mm. 



The outer frontal keel is stronger than the inner. 

 The basal half of the mesosternum is smooth and 

 bare; it is bordered, except at the base, by a keel, 

 which makes it into a semi, circular area; the apex 

 is punctured and densely covered with silvery pubes- 

 cence. Abdominal petiole aciculated, the top, except 

 at the base, finely irregularly stnated. Hind coxae acicula- 

 ted, the outerside in the middle margined longitudinally. 



The tint of the pubescence on the face varies; 

 it may be bright golden and may extend on to the front. 

 Mes eurytoma, gen. nov. 



Antennae with 9 apparent joints, but the last may 

 be composed of more than one joint, there are 2 ring- 



joints; the first joint of the flagellum is as long as 

 the scape. Eyes large, oval; on the inner side they 

 are margined by a stout keel, which becomes higher 

 on the top and curves there round to the hinder 

 ocelli; from its top a less distinct keel runs down 

 the outer orbits; both keels are separated from the 

 eyes by a more or less crenulated furrow. The 

 lower side of the occiput is keeled stoutly ; this keel 

 is continued round the lower edge of the malar space, 

 which is half the length of the eyes. The face is 

 raised and bordered in the centre, the raised part 

 being widest above. Front hollowed in the centre, 

 the anterior ocellus is at its upper edge; the ocelli 

 in a curve. Collar large, quadrate, as long as the 

 mesonotum, which is trilobate. Scutellum large, roun- 

 ded behind. Metanotum with a steep, oblique slope, 

 its centre depressed. Abdomen with a distinctly de- 

 fined petiole: which is about 3 times longer than 

 wide ; the 2 nd segment distinctly longer than the 3 rd ; 

 the 4th is almost as long as the 2nd and 3rd united; 

 the apical small, compressed. Marginal vein almost 

 twice the length of the stigmal, the end of which is 

 thickened, transverse in front, rounded below. 



The abdomen is clearly shorter than the thorax; 

 above it is roundly raised and curved; its apex 

 sharply pointed. In front of the fore coxae are 2 

 hollowed, shining plates, roudod on outer side. 



The systematic position of this genus is not 

 quite clear to me. If it were not for the presence 

 of 2 ring-joints in the antennae I should have placed 

 it in the Eurytomini; I am not, however, sure that 

 there are 2 ring-joints; it may be that the basal joint 

 ■is a mere thickening of the scape. If one of the 

 genuine Eurytomini, it would, in Ashmead's table, 

 come in near Bephrata, Cam. to which it has a 

 considerable resemblance in- form. 



Mesoeurytoma, cariniceps, sp. nov. 

 Black, the fore knees, the apical fourth of the 

 fore tibiae, the apical half of the 4 posterior and all 

 the tarsi, pale testaceous; wings clear hyaline, the 

 nervures pale testaceous. 9- Length 5,5 mm. 



Flagellum of antennae densely covered with 

 glistening white pubescence ; of equal thickness ; the 

 antennae as long as the thorax. Face, clypeus and 

 lower lateral part of vertex covered with white, 

 distinctly separated hairs; the upper part more reticu- 

 lated-punctured, the lower more or less obliquely 

 reticulated, the longitudinal striae long, more distinct 

 than the transverse; the malar space more strongly 

 obliquely reticulated. Sides of front and vertex closely 

 reticulated, weakly below, more strongly above. Pro- 

 mesonotum and scutellum strongly umbilicately punc- 

 tate, the scutellum more strongly than the rest, as is 

 also the sides of the central part of metanotum; this 

 is clearly defined by a keel which curves round at 

 the top, its top half is smooth, the lower not very 

 strongly transversely striated ; outside this is a narrower 

 area, which at the top, is reticulated, the rest being 

 somewhat stoutly transversely striated. On the meso- 

 pleurae are 2 curved, clearly defined crenulated 

 furrows, extending from the base to the apex and 

 placed on the lower edge. Sides of abdominal petiole 

 keeled; there is a curved, more slender, keel in the 

 middle. The other segments smooth, shining and 

 bare, except the apical, which have a short white 

 pile. Coxae umbilically punctate, the hinder more 

 strongly than the anterior; all are densely covered 

 with silvery pubescence; the rest of the legs are less 

 closely covered with white hair; the apical half of 

 middle femora dilated, - . 



Eigentum von Fritz Rühl's Erben, Zürich. —Redaktion: M. Rühl, Zürich V. — Verlag der Entomolegischen Zeitschrift in Frankfurt a. M" 



. Druck von Gustav Giesecke, Frankfurt a. M. 





