File:Contributions to the biology of the Danish Culicidae (1920) (20502584019).jpg

Title: Contributions to the biology of the Danish Culicidae
Identifier: contributionstob00wese (find matches)
Year: 1920 (1920s)
Authors: Wesenberg-Lund, C. (Carl), 1867-1955
Subjects: Mosquitoes; Malaria
Publisher: Kobenhavn, A. F. Host & Son
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
103 tl Genus IV. Tcuniorhynchus. 1. Taeniorhynchus Richardi (Ficalbi). Tab. XV—XVI. Description. Female: Proboscis moderate; labellae moderate; vestiture of broad scales blackish-brown with many black and a few yellowish scales; labellae bright ferruginous, setae small, black; yellow on the labellse. Palpi brown, about a fifth as long as the proboscis, with many outstanding bristles and creamy-yellow scales. Antennae filiform, moderate, blackish-brown, joints at shaft subequal, rather short, densely clothed with silvery hairs; second joint a little thicker, ferru- ginous; tori globose, brownish with an inconspicuous group of flat white scales on inner side; hairs of whirls sparse, dark. Eyes black. Clypeus broad; rounded, almost black, nude. Occi- put brown, clothed with narrow, curved, pale scales and numerous forked black ones; numerous black- ish and pale brown bristles pro- jecting at vertex. Prothoracic lobes small re- mote, similar to mesonotum. Meso- notum chestnut-brown with scatter- ed golden scales, more or less di- stinctly arranged in rows, bristles black. Scutellum trilobate, clothed with narrow curved scales and bright, golden brown border-brist- les. Postnotum elliptical, nude, clear, ochraceous brown; pleura? and coxae pale, yellowish-brown, with a few pale yellowish scales. Abdomen subcylindrical, flattened, slightly tapering towards tip, when denuded dull ochraceous-brown, under certain conditions of light it is dark, shining, while in other cases it may be black. When covered with dusky scales it is almost black with now and then traces of apical bands. Five or six yellowish-white lateral, often rather inconspicuous spots. Numerous golden brown hairs along the sides and the hind margins. Wings: The veins densely covered with rather broad, elongated oval, brown and light scales; besides there are a few scattered yellow scales, especially along the costal region; no long thin lateral scales. First submarginal cell almost as long as the second posterior cell; stem of the former about half the length of the cell; stem of the latter also about the same relative length; basal cross-vein only about once its own length apart from anterior cross-vein; halteres pale, ochraceous.
Text Appearing After Image:
Texttig. 12. Tceniorhynchus Richardi. Larva living; with the sipho pierced into the root.

Note About Images