420 



Wirth and Stone: Diptera 



Fig, 14:31. Tendipedini and Hydrobaeninae. a-d, Polypedilum ophioides Townes, larva: a, 

 antenna; b, labial plate and paralabials; c, mandible; d, spur of eighth segment of pupa, e-i, 

 Glyptotendipes dreisbachi Townes. Larva: e, antenna; f, mandible; g, labial plate and paralabials. 

 Pupa: h, comb of eighth segment; /', macelike process of sixth segment. /'-/, Tendipes: j, pupa; 

 k, egg mass; 1 larva, m, Symbiocladius equifons Claasen: mayfly nymph with larva under wing 

 pads {a-i, Berg, 1950; /-/, Williams, 1944; m, Claasen, 1922). 





(fig. 14:32/) as in Calopsectra, the elongated preanal 

 papillae (fig. 14:32o) as in the Pelopiinae and some 

 Hydrobaeninae, and the labial plate with only nine 

 teeth. The pupae have only two-branched prothoracic 

 respiratory organs (fig. 14:32Z) and lack cephalic tuber- 

 cles. No species have been reported from California. 



Genus Lauterborniella Bause 



Larvae of this genus are unique among the Tendipedini 

 in their habit of building a movable case of sand 

 grains resembling those of certain caddisflies, agree- 

 in this habit with certain Calopsectra species. The 

 larvae have six-segmented antennae, an even pair of 

 labial teeth of which the middle pair are longer than 

 the first laterals, and the pupae have two (subgenus 

 Lauterborniella) or four (subgenus Zavreliella) branches 

 on the prothoracic respiratory organs, one branch of 

 which bears minute, pointed papillae. Species of the 

 subgenus Zavreliella have the front femora clubbed 



apically and the wings spotted. No California species 

 have yet been reported. 



Genus Microtendipes Kieffer 



(Fig. 14:336-e,;) 



T'he larvae of this genus differ from others in the 

 group with six-segmented antennae by having the two 

 middle teeth of the labial plate pale (fig. 14:33c). 

 The pupae have seven-branched prothoracic respir- 

 atory organs. 



One California species: 



caducus Townes 1945. Placer County 



Genus Paratendipes Kieffer 



(Figs. 14:21Z; U:S3a,f-i) 



The larvae of Paratendipes differ from those of related 



