C. W. Johnston.
Descriptions of Some New Tropical Pachygastrinae.
Psyche 27(5):112-115, 1920.

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112 Psyche [October
DESCRIPTIONS OF SOME NEW TROPICAL
PACHY GASTRINB.
BY CHARLES W. JOHNSON,
Boston Society of Natural History.
In describing a species of Psephiocerafrom Jamaica, my attention was called to two apparently new species, representing one Psephi- ocera and one Chalcidomorphina from British Guiana. The above genera by Dr. Enderlein cover these forms, while a paper by Dr. Kertesz enables us positively to determine Cynipimorpha. With the limited material at hand, it is with some misgivings that I offer this paper, but the difficulty of obtaining smaller species from that region is so great that years slip by and they remain unde- scribed. For instance, the specimens at hand have been in my possession over eighteen years. It is to be hoped that the following bibliography and table of species will aid future workers. Cynipimorpha bilimeki Brauer . Fig. 1.
C: bilimeki Brauer, Denkschr. der K. Akad., Wien, XLIV, 75,1882; Kerthsz, Ann. Mus. Nat.Hung., VI, 343,Tab. 6, Figs. 1,2,1908. In the latter paper Dr. K. Kertesz has carefully redescribed Brauer's type and figured the antenna, thus enabling one to readily identify this species which otherwise would have continued to cause confusion among the closely related genera and species. I herewith reproduce the figure given by Kertbsz. The genus has been emended to Cynipomorpha by Enderlein, but the original spelling will have to stand.
Psephiocera Enderlein.
ZoiAogischer Anzeiger, 1914, Band 43, p. 300. Type P. flavipea
Enderlein.
Table of Species.
........ 1. Tomentum forming lines on the disc of the thorax. .3
................... Tomentum covering the entire thorax. .2
2. Scutellum and part of the pleura with light tomentum (Mexico) minuta Will.
Scutellum with black tomentum, pleura shining black without tomentum (S. Brazil). ............... .flavipes Enderl.



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19201 Johnson-Descriptions of New Tropical Pachygastrin(~ 113 3. Thorax with three lines of light tomentum which is also present on the sides, and on the middle of the pleura (Jamaica) metzi Johns.
Thorax with a dorsal line of light, tomentum, expanding into a large patch in front of the scutellum, also present on sides and on part of pleura (Brit. Guiana) . . . . dorsata sp. nov. Fig. 1. Antenna of Cynipimorpha I'ilimeki 8, after Kertesz; Fig. 2, scutellum of Psephiocera minuta; Fig. 3, antenna of Chalcidomorphina aurata 9 , after Ender- lein; Fig. 4, antenna of Chalcidomorphina crewi 9, Fig. 5; Scutellum of same. Psephiocera minuta (Williston). Fig. 2.
Cynipimorpha minuta Williston, Biol. Cent. Amer., Vol. I, p. 252, Tab. 4, Figs. 19, 19a, 1901 ; Kertksz, Ann. Mus. Nat. Hung., Vol. 4, p. 343, 1908.
Psephiocera minuta Enderlein, Zoul. Anz. Band 43, p. 302,1914. Eucynipimorpha minuta Malloch, Ann. Ent. Soc. Amer., Vol. 8, p. 312, 1915.
As pointed out by Dr. K. Kertksz this species cannot be placed in the same genus with Cynipimorpha biiimeki Brauer on account of the great difference in the antennae. It was later placed by Dr. Enderlein in the above genus. A specimen in my collection from Mexico agrees with Williston's description except that the femora are yellow with a slight brownish tinge below, and not "except the tips, nearly black." This is evidently a variable character and the specimen probably represents the extreme range of variation in this respect. The third joint of the antennae under a hand lens (12 diameters) is "finely roughened" but under the binocular with



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114 Psyche [October
an enlargement of from 25 to 60 diameters the annuli show dis- tinctly and the roughening is due to rows of minute granules on the annuli; the third joint is yellow with a dark brown spot at the base. In thisrespect the genus seems to be closely related to Neopachy- gaster, the glossy brown spot on the antenna1 joint, which Malloch refers to as "possibly of a sensory nature," is here largely devel- oped.
The only other character that seems to separate the two genera is the form of the scutellum.
The side view given of C.
minuta (fig. 19a) shows two small dorsal protuberances at the suture that are not mentioned in the description, nor are they shown in the dorsal view (fig. 19).
Psephiocera metzi Johnson.
Diptera of Jamaica, Amer. Mus. Nat. Hist., Vol. 41, p. 427,1919. The apex of the scutellum is slightly shorter and less attenuated ' in this and the following species, than in P. minuta Will. Psephiocera dorsata sp. nov.
2
Front black, orbital margins whitish, face white, antennae yellow, the third joint with five narrow annuli, with a small brown basal spot, arista yellow. Thorax black when viewed from above, the yellowish tomentum forming a dorsal line extending just beyond the suture where it expands into a broad patch in front of the scu- tellum;
there is also an obsolete transverse band in front of the suture; from the humeri large patches of whitish tomentum extend to the base of the wings and across the pleura; base of the scutel- lum with yellowish tomentum. Abdomen black, looking from be- hind the fourth segment has three lines of white tomentum, with only the dorsal line showing on the fifth segment, third segment with only a lateral patch when viewed from the side. Legs yel- low, femora except at the tips dark brown, front tibise also brown, halteres white. Wings hyaline, costa and first longitudinal vein dark brown, stigma yellow, length, 3 mm. One specimen, Bartica, British Guiana, May 28, 1901 (R. J. Crew). Type in the author's collection.
~hdcidomor~hina Enderl ein.
Zoologischer Anzeiger, 1914, Band 43, p. 298. Type C. aurata
Enderlein .




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19201 Johnson-Descriptions of New Tropical Pachygastrince 115 Chalcidomorphina aurata Enderlein. Fig. 3. Zoologischer Anzeiger, 1914, Band 43, p. 299, figs. 4,s. Colum- bia.
The principal character that separates this from the following species is the form of the antennae. The scutellum of the geno- type was missing, but it is probably similar to the following species which is here figured.
Chalcidomorphina crewi sp. nov. Figs. 4, 5. 0
Face black, whitish pollinose, front black shining, with white orbital spots midway between the vertex and antennae, from these very narrow orbital lines extend to the face, ocelligerous tubercle prominent, ocelli yellow, antennae situated about the mid- dle of the head in profile, blackish above and yellow below, first joint slender, about as long as the second and third combined, third joint broadened and somewhat flattened above and minutely flecked with white.
Thorax black, with a dorsal line, a narrow transverse band at the suture, and a broad band near the base of the scutellum of yellow tomentum, on the humeri and pleura whitish, scutellum black, the tip longer and more attenuated than in the species of the genus Psephiocera, abdomen black, with agray- ish pollinose arcuate band at the posterior margin of the third and anterior margin of the fourth segment, and a V-shaped marking at the end partly on the fourth and partly on the fifth segment. Legs yellow, the anterior femora brownish, halteres white. Wings
hyaline with a slight brownish tinge, more noticeable toward the tip, veins brown, stigma yellow, middle portion of the costa and tip of the first vein dark brown, third vein branched. Length, 3 mm.
One specimen collected by Mr. R. J. Crew, at Bartica, British Guiana, July 3, 1901.
Type in the author's collection.




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