II. 



Anophelines. 



Chapter IV. 



Anopheles and Danish Malaria. 



Of the genus Anopheles we have three species in our country: A. maculipennis, 

 A. bifurcatus and A. plumbeus. We cannot expect to find any more species. The 

 three species are so well known in the imago stage as well as in the larva stage 

 that redescription and drawings may be regarded as quite superfluous. 



A. plumbeus Stephens. 

 A. nigripes n. sp. Staeger. 



A. plumbeus is easily distinguishable from A. bifurcatus by its small size and 

 dark colouring. It has been described by Staeger (1838 p. 552) from a single spe- 

 cimen taken in Charlottenlund near Copenhagen. In the Royal Museum is found a 

 series of the species but after 1838 no finds are recorded in literature. 



Most probably A. plumbeus is rather rare in our country; I have found the 

 species in the Royal Garden at Fredensborg near Esromlake and in the forests bor- 

 dering the lake of Tjustrup. I have only seen it flying at sunset mainly when it 

 is so dark in the forests that the species may just be distinguished. It bites but 

 not so viciously as A. bifurcatus. 



The larva has hitherto been unknown in our country; Meinert (1886 p. 395) 

 has described a larva as A. nigripes but his figures show that the larva he has found 

 is most probably only a young A. maculipeiinis-kiv\i\, at all events not the larva of 

 A. plumbeus. 



The larva is hitherto mainly recorded from tree-holes where it lives together 

 with the larva of Finlaua geniculata. (Howards according to Lang 1920 p. 78; Lam, 

 1920 p. 78). Eckstein (191^ p. 288), Martini (1920J p. 52). For a long time I have 

 vainly searched for the larva of A. plumbeus, the tree-holes only containing the larva 

 of Finlaya geniculata; finally in the latter part of July I found a tree-hole with a 

 great many Anophelin larvae which when more closely examined differed very 

 much from those of the two other Danish species; they had all the diagnostic fea- 

 tures of the larva of A. plumbeus; the post antennal hairs being exceedingly small 



