Parasitic Hymenoptera From the Fiji Islands

Psyche: A Journal of Entomology, Jul 2018

Charles T. Brues

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Parasitic Hymenoptera From the Fiji Islands

International Journal of Family Evaniidce. conical and strongly chitinous teeth which do not seem to be segregated in distinct divisions. Ventral pores present in a circular area on sternites of anterior region but absent from middle and posterior regions, last ventral plate wide. Coxal gland one on each side, this homogeneous, and, while large, was evident in the type only after clearing of the specimen. Anal legs long, with well developed claws, with sparse stiff hairs over surface in general and numerous finer and shorter ones on ventral surface of proximal ioints in particular, as usual, e. g. in species of Nyctunguis. Palpus of second maxilla rather short and stout; claw short, excavated, pectinate along the edge to and around the end, the sete long. Number of pairs of legs, in female, fifty-five. Length, about 18 mm. - PARASITIC HYMENOPTERA FROM THE FIJI ISLANDS.t By CHARLES T. BRUES. Hemifoenus extraneus Turner. Trans. Ent. Soc. London, 1918, p. 342 (Hyptiogaster). c Length 7-8 mm. Dark reddish brown, varied with lighter brown, the paler markings, not very sharply defined, as follows: head below the antennee, entire orbits, vertex, neck behind, irregular sreaks on mesonotum, margin of propleura, mesopleura except behind, propodeum except for a median dark line, lateral spot at middle of first and at tip of first,of second and of third abdominal segments, posterior margin of following segments, base of antennal scape and four anterior tibiee; hind legs with the femora and tibim lighter on the lateral surfaces. Wings hyaline, stigma and veins piceous. Head distinctly wider than the thorax, one-half broader than thick, occipital margin sharp, but not strongly elevated; ocelli in a triangle, as far from one another as from the eye-margin. Eyes with their facial margins parallel, surface sparsely but distinctly hairy; almost touching the base of the mandibles. Occiput irregularly, transversely aciculate, the strim oblique to the side of the ocelli and very fine and more or less concentric about the base of the antennm; clypeus and face below antennm smooth, except for very delicate dense punctures at the sides just below the antennee. Mandibles large, the basal and the apical tooth long. Antennee inserted just above the middle of the eye" scape and first flagellar joint about equal, each two and one half times as long as the pedicel; second and third flagellar joints equal, together barely one-third longer than the first, each nearly twice as long as thick; following gradually decreasing in length, the penultimate but lit;tle longer than thick. Head behind the eyes smooth, the foraminal margin higher than on the occiput, transparent. Neck barely as long as the distance from tegula to anterior margin of mesonotum, with a very strong median carina below. Mesonotum with a V-shaped impression formed by the parapsidal furrows which originate on the sides at the anterior third and meet medially behind at the posterior third; between them near the anterior margin are traces of two delicate impressed longitudinal lines; surface coarsely transversely striate, these strim curving backwards on the lateral lobes; scutellum fiat, the postscutellum concave with raised lateral and posterior margin, almost contiguous with the tubercle upon which the abdomen arises. Thorax in lateral view slightly higher than long, the propodeum almost vertical behind. Propleura smooth except for a few short coarse horizontal strim centrally, below, and along the posterior margin; mesopleura punctulate, but smooth and polished behind; metapleura smooth and polished; propodeum reticulate, more coarsely so medially in front, with a distinct transverse carina just behind the middle (obliterated in some specimens). Abdomen three times as long as the thorax; petiole smooth, as long as the three following segments together, the spiracle at the middle; second to sixth of about equal length, the whole abdomen formed as in Gasteruption; polished basally and subopaque beyond. Hind coxm striate above, smooth below; femora slender, the tibiee constricted at base, but not greatly swollen apically, not broader than the femora; hairy, but without any short stiff spinules; longer tibial spur a little more than half the length of the metatarsus, the latter at least four times as long as thick and as long as the following joints together; claws long, slender, simple. Wings with the basal nervure arising considerably to the base of the stigma; cubitus arising just behind the middle of the basal; first section of radial vein two-fifths as long as the second which is reduced in thickness on its apical half; recurrent nervure entering the first cubital cell just beyond the basal third; anterior discoidal cell more than twice as long as the posterior one which is open behind; nervulus interstitial. Hind wing with three frenulum hooks. Six males from Fiji (W. M. Mann). One specimen is from Navai and all the others from Nadarivatu. Turner records Cuvu. T (...truncated)


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Charles T. Brues. Parasitic Hymenoptera From the Fiji Islands, Psyche: A Journal of Entomology, 29, DOI: 10.1155/1922/79505