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.
47/84 page 67
![markiiiii's, osjx'ciallv m tli(' ahscaua' ol a \vliit(‘ riiiLi, at l)as(' ol fiont tikiac and tlio broadoi' black rin.u' at bas(' ol lirsi liont tarsal s('uin(Mit. o!). Cbironomus (s. sir.) samoensis, sp. n. j 9- //c(a/ocbn'ous. ]>al|)i and ant(Minal lla^clliim ralli<‘r daikaa-; plumes of ^ antennae pale. k''r()ntal tnlx'rek's pi'C'simt. of ni(jd(‘i'at(‘ size. Last sc'pnietd of j antennae (piite three tinu's as lonu' as 2-1 I tou('tli(‘i'. Thorax ^.fitMUiisli ; scutum witli three reddisli-oranue sti'ipc's, tin* ai'eas Ix'twaMui the strij)es dusted Avitli silverv-ci'ev. Postnotum n(»t dai'kei' than tlu' scutal sti’i)»es. Pi'onotum sliii'htlv eniaru'inate in middle. AlxJoaiea of q (when not discoloui’ed) jrreen, tergites 2-4 each with a more oi- less diamond-shajx'd brown spot near base, 5 brownish, b-S darker l)rown, liypoi)ygium ])ale. Seen very oblirpiely from in front the segments are rather distinctly silvery-grey at the ba.se : seen o})li(piely from behind the silvery dusting is on the ]X)sterior margins of 2-5 and nearly the whole of b-7. Hypopygiiim wdth anal |)oint moderately long and slender ; clas])ers slender, not much enlarged at base ; u])|)er basal a|)pendage rather small, with a downward-curved ])oint ; the structure almost as figured bv Kieft'er for Ch. imherhis. Abdonioi, of $ without distinct markings. Ltcjs greenish-yellow ; tarsi a little darker, first two segments narrowly and rather indistinctly brown at tip. No darkening on femora, nor on front ti))iae. First segment of front tarsi about 1’8 times as long as tibiae. No tarsal beard. 11 hyaline; r-m slightly darkened; venation as in other meinbers of the dorsalis grouj^. Halteres pale. Length of body (lA) 4-5-5 mm. ; wing 3-3-5 mm. Upolu : Apia, 7 6 23.ii., 4.iii., 20.vi.1924 ; Malololelei, 1 21.iv.1925 ; Vailima, 1 q, 12.xii.l925. Tutuila : Pago Pago, 1 q, 2.xii.l924. Tonga: Nukualofa, 1 23.ii.1925. Chironomus samoensis is very closely related to a number of described Australasian species, such as C. suhdolus Skuse and C. imherhis Kiefi, of the cosmopolitan dorsalis group. It does not quite agree with specimens of C. suh¬ dolus in the Biatish Museum, and is not represented in the collections from the Society Is. and Fiji. From C. hawaiiensis Clrim. it difi'eis chiefly in the absence of dark })rea])ical lings on the femora. (>0. Chironomus (s. str.), sp. l^])olu : A])ia, one damaged $, 2{>.iv.l924. Similar to the last, but scutal stripe's black, front tibia black at base. etc.](https://iiif.wellcomecollection.org/image/b29809071_0047.jp2/full/800%2C/0/default.jpg)
