Insects of Samoa and other Samaon terrestrial arthropoda. Pt. 6, Fasc. 2, Nematocera / by F.W. Edwards.
- Edwards, F. W. (Frederick Wallace), 1888-1940.
- Date:
- [1928?]
Licence: In copyright
Credit: Insects of Samoa and other Samaon terrestrial arthropoda. Pt. 6, Fasc. 2, Nematocera / by F.W. Edwards. Source: Wellcome Collection.
16/84 page 36
![14. Plastosciara pernlclosa Edwards. Knt. Mo. Miuj. (.'5), viii, ]>. 160, l'.)22. llpoln : Apia, 1' q, 8 $. })red from rotten <>:rass, iv.l925. Fiji: Labasa, S 9. 28.ix.l9‘22 (Voiteli). The s])ceimens a,(?ree well with British examples. First described from material from A\ orthin, Sussex, the species has since been fomid occurring as :i hothouse pest at other places in England, but has not hitherto been reported trom any other country. Tt is probable that P. perinciom and many other Sciaritie species are more or less cosmopolitan in their distribution. 15. Scythropochroa samoana, s]). n. 9- Head, including antennae and palpi, black, vertex scarcely shining. Eye-bridges four facets wide and almost touching. Ocelli in a very flat triangle, the middle one about its own diameter distant from the eyes. Flagellar seg¬ ments about 1-7 times as long as broad, with short necks ; pubescence nearly as long as the diameter. Thorax black, slightly shining, dorsocentral and acrostichal hairs short, inconspicuous, dark, the former numerous, the latter in a double row. Scutellum with numerous short hairs but without stiff marginal bristles. Abdomen long, slender, black, with black hair. Cerci rather large and nearly round. Legs entirely dark brown ; tibia! spurs dark, about as long as diameter of tibia. Wings with a rather strong brown tinge, anterior veins dark, })Osterior veins not darker than the membrane ; branches of M and Cu bare as usual. Ri a little longer than R and ending a little beyond/d/. Costa reaching nearly three-quarters of the distance from Rr, to ilii. Stem of median fork nearly l-o times as long as the lower branch. Rr, ending distinctly beyond level of tip of il/o. Basal section of M and r-m about equal in length ; fCu below middle of r-m. An short and very faint. Halteres blackish. Wing- length 4-5 mm. ; body 5-5 mm. Upolu : Malololelei, 2,000 ft., I $ (type), 20.vi.l924. This species is closely allied to the genotype, S. latefureata hhid. (Seychelles Is.), l)ut differs in its larger size and darker legs. A second 9 t^-ken at the same place, 14.xi.l924, differs from the type as follows : Ocelli in a sub-equilateral triangle, the middle one nearly touching the ev(‘s : ev(‘-bridg('s s(‘])arated bv about the width of one facet. Thorax brownish](https://iiif.wellcomecollection.org/image/b29809071_0016.jp2/full/800%2C/0/default.jpg)
