S. A. Rohwer.
Descriptions of Two New Genera of Parasitic Hymenoptera.
Psyche 21(2):79-81, 1914.

This article at Hindawi Publishing: https://doi.org/10.1155/1914/90567
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19141 Brues~The Phorid Genus Platyphori of America 79 Described from a single male collected at Forest Hills, Mass., May 30,1910, by Mrs. C. T. Brues. The insect was moving about among fallen leaves in an open wooded area. Ants of various kinds are abundant in the vicinity and it is possible that the species may be myrmecophilous like its European congener, P. lubbocki. Platyphora coloradensis sp. nov.
3. Length 1.8 mm. Black; antennae dark fulvous, darkened on the tip of the third joint; palpi pale yellow; legs testaceous, tinged with fuscous on the tibiae and fuscous on the tarsi. Pleurse pale fuscous, piceous on the posterior half of the meso- pleura.
Hypopygium retracted, but apparently brownish as in P. ehrynota. Head structurally as in P. eurynota, and also the mesonotimi, except that the dorsocentral bristles are larger. Scutellum dull, not at all shining, with shagreened surface; the series of bristles along its margin larger than in P. eurynota. Abdomen with the second and sixth segments lengthened, slightly pruinose and nearly bare on the first to fifth segments; sixth shining and clothed with sparse hairs. Pleurae and legs as in P. eurynota. Wings hyaline; heavy veins pale brown, except the apex of the costal vein which is fuscous; light veins very pale; costal bristles larger than in P. eurynota; third vein bristly to the fork and second vein bristly; third vein thick- ened, but not much stouter than the costa, light veins much as in P. eurynota, but the fourth and fifth are less divergent at tip and the seventh apparently farther from the margin. Halteres black, except at extreme base. Described from a single specimen collected on a window at Boulder, Col., by Mrs. T. D. A. Cockerell, July 17, 1908, and sent to me by Prof. Cockerell.
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This species is very similar to P. eurynota in structure, although entirely different in color and much smaller. It might perhaps be
considered as a mere color variety, but the scutellum is dull and the wing venation is not identical, so it appears to be a perfectly dis- tinct, but allied species.
DESCRIPTIONS OF TWO NEW GENERA OF PARASITIC HYMENOPTERA.*
The following new genera and species are parasites of two insects which have been proven to be of economic importance in relation to the chestnut. The descriptions are offered at the present time -- -
* A contribution from Branch of Forest Insects, Bureau of Entomology, Washington, D. C. Pnche 21:79-81 (1914). hup tipq~hc rinclub org/21/21-079 html



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80 Psyche [April
so the names of these two parasites may be available for economic purposes.
Anomopterus gen. nov.
This genus belongs to the subfamily Liophroninse and is related to the genus Centisles Haliday as defined in Szepligeti's classifica- tion of the Braconidee (Gen. Insect. 1904) but may be separated from Haliday's genus by the different venation, the different abdo- men and the other characters embodied in the following description. Malar space fully as wide as the width of the mandibles at the base; mandibles simple; clypeus well defined, separated from the front by a deep furrow; inner margins of the eyes parallel; antennae inserted above the middle of the front, pos- terior orbits approximately as broad as the diameter of the eye; eyes coarsely gran- ular: scape cylindrical, subequal in length with the second and third antenna1 joints; body coarsely granular; notauli obselete; propodeum subtruncate pos- teriorly and without any well defined areolation; venation as in Fig. 1; legs rather stout, especially the posterior pair; the posterior tibiae thickening apically; abdo- men with five segments; ovipositor well exserted. Type: The following new species.
Anomopterus fasciipennis sp. nov.
Female: Length, 2 mm. ; length of the ovipositor 0.5 mm. Head and thorax coarsely granular; postocellar line slightly shorter than the ocellocular line; the
lateral ocellar line subequal in length with the diameter of the anterior ocellus; antennae 20-jointed, the third joint distinctly longer than the fourth; first ten flagel- lar joints longer than wide, beyond that the length and width become subequal and the apical five joints are moniliform; mesoscutum coarsely granular; the met- anotum more coarsely granular than the scutellum, about the same sculpture as the dorsal aspect of the propodeum; dorsal aspect of the propodeum with two faint lateral carhae and with a faint median furrow, separated from the posterior aspect by an irregular faint carina; mes- episternum shining; practically impunctate; abdo- -
men shining, impunctate. Ferruginous; the eyes, the ocelli, posterior aspect of the propodeum, the inetanotum and the two apical abdominal seg- Fig. 1.
ments black; the basal five joints of the antennae Anomopterus fa!ciipennw ferruginous, the remaining, black; legs the sp. nov., wings.
color of the body; anterior wings hyaline with two broad dusky bands, in the region of the bands the venation is pale brown, in the hyaline portion of the wings it is pallid; stigma pale yellowish; posterior wings hyaline, irides cent, the venation pallid. Male: Length, 2 mm.
Agrees well with the above description of the female. Falls Church, Virginia.
Described from two females (one type)




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19141 Roher-Descriptions of Two New Genera of Parasitic Hymenoptera 81 and two males recorded under Bureau of Entomology No. Hopk. U. S. 11245 x, which refers to a note stating that this species is a primary parasite of Ecioedemia phlmphaga Busck. Material col- lected by T. E. Snyder and reared September, 1913, by Carl Hein- rich.
Type: Cat. No. 18051, U. S. National Museum. Centistidea gen. nov.
Related to Anomoptem but may be separated from that genus by the embossed area on the first tergite, by having the second dis- coidal cell more widely opened and by having 14-jointed antennae. Head as in Anomopterus; scape cylindrical, subequal in length with the pedicellum; body shining with distinct separate punc- tures; venation as in Fig. 2; legs not robust; first tergite with an elongate embossed area basally.
Type: The following new species.
Centistidea estcedemise sp. nov.
Female: Length, 1.75 mrn. Head subopaque, with separate, rather poorly defined punctures; third antenna1 joint distinctly longer than the fourth; posto- cellar line a little more than half as long as the ocellocular line; mesoscutum shining with separate distinct punctures; scutellum more sparsely punctured; metanotum shining, practically impunctate; propodeum shining with sparse separate punctures, laterally with two well defined carinse, me& anly with faint, poorly defined carinse, no carinse separating the dorsal and posterior aspects; the lateral posterior aspect with four or five strong rugse; mesepisternum and sides of the propo- deum shining impunctate; embossed area of the first tergite slightly wider basally. Black; mandibles pale ferruginous; scape and
pedicellum piceous; tegulse and first tergite fulvous; legs except the posterior tarsi fulvous; wings hyaline, iridescent, venation pale brown, Fig. 2,
stigma black. Centisticlea ectoedemice
Male: Length, 1.5 mm. Agrees well with
sp. nov., wings.
the above description of the female.
Ballston (Veitch), Virginia. Described from one female (type) and one male recorded under Bureau of Entomology No. Hopk. U. S. 11236a, which refers to a note stating that this species is a primary parasite on Ectoedemia castaneoe Busck, the material col- lected and reared by T. E. Snyder, adults issuing April 23 and 34, 1913.
Type: Cat. No. 18052, U. S. National Museum.



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