418 



Wirth and Stone: Diptero 



Fig. 14:29. Clunioninae, Hydrobaeninae, and Diamesinae. a,b, Clunio: a, female; t, male. 

 c-g,o, Heptagyia lurida (Garrett), larva: c, head, dorsal view; d, head, lateral view; e, mandible; 

 f, antenna; o, larva, lateral view; g, dorsal view of pupa, h-n, Mefn'ocnemus edwardsi Jones: 

 h, egg mass; /, male, habitus; /, female head; k, pupa; /, male genitalia, dorsal view; m, female 

 palpus; n, larva, lateral view (a,b, Williams, 1944; c-g,o, Saunders, 1928; h-n, Jones, 1916). 



In the subgenus Tendipea (Andersen, 1949), the 

 genus Calopsectra (Johannsen, 1937), and in several 

 other genera the classification of the immature stages 

 has to a great extent proceeded independently of that 

 of the imagoes to the great confusion of present stu- 

 dents. Only by the careful rearing of many species 

 and the comparison of these correlated specimens 

 with the types and descriptions of the older species 

 will it be possible to merge the two systems and 

 produce order. 



Tribe CALOPSECTRINI (= TANYTARSINI) 



Genus Calopsectra Kieffer (=Tanytarsus auct.) 



(Figs. 14:20c,£; 14:26c; 14:286-d; 14:32o-A) 



The larvae of this genus have long five-segmented 



antennae, of which the basal segment is long and 

 curved and borne on a distinct tubercle or prominence 

 of the head (fig. 14:32a); the paralabial plates are 

 usually very long and narrow and nearly touching on 

 the mid-line; (fig. 14:32e), and most of the abdominal 

 segments bear bifid plumose bristles posterolaterally. 

 The pupae have simple, usually slender, prothoracic 

 respiratory organs (fig. 14:32^) (as in the Hydro- 

 baeninae) in contrast to the branched or tufted organs 

 of the Tendipedini. A number of species build Hydra- 

 like tubes of silt with the number of arms differing 

 for different species, the arms used to support the 

 salivary net which catches food particles (fig. 14:26c). 

 Two groups of species (Zavrelia and Stempellina) 

 build portable cases of sand grains very like those 

 of leptocerid caddisflies (Walshe, 1951). 



No California records of this genus are available. 



