422 



Wirth and Stone: Diptera 



Fig. 14:34. Tondipedinae. o-c, Tanytarsus (Endochironomus) 

 nigricans (Joh.). Larva: a, antenna; b, labial plate. Pupa: c, fin 

 and lobe of. eighth and ninth segments. d,g,h,m, Tanytarsus 

 (Tribelos) jucundus var. dimorphus (Mall.). Larva: d, labial plate 

 and paralabials; g, antenna; h, mandible. Pupa: m, fin of eighth 

 segment. e,f,i-l, Cryptochironomus psittacinus (Mg.). Pupa: e, 

 cephalic tubercles; f, anal lobe; k, posterior margin of fourth 

 tergite. Larva: i, labral papilla; /', antenna; (, labial plate 

 (Johannsen, 1937). 



often conspicuously banded. One species is a com- 

 mon, leaf-mining pest of water lilies in Japan (Toku- 

 naga and Kuroda, 1935). 

 California species: 



colei (Malloch) 1919. 

 taeniapennis (Coquillett) 1901. 



Del Norte County 

 Placer County 



Genus Tanytarsus van der Wulp 



(Fig. 14:2H; 14:32n,g,s,<; U:Ma-d,g,h,m) 



This genus is not to be confused with Calopsectra 

 Kieffer, which until Townes* (1945) paper was gen- 

 erally known as Tanytarsus. This genus includes 

 as subgenera those species which have gone under 

 the generic names of Endochironomus Kieffer and 

 Stictochironomus Kieffer; the genera Lauterbornia 

 Kieffer, Phaenopsectra Kieffer, Sergentia Kieffer, and 

 Lenzia Kieffer are synonyms of Tanytarsus (Tany- 

 tarsus). 



The pupae of Tanytarsus have prothoracic respira- 

 tory organs consisting of a tuft of numerous white 

 filaments as in Tendipes, but differ from that genus 

 in having a comb of several teeth (figs. 14:32<?; 



14:34c,m) rather than a simple or compound spur on 

 the hind corners of the eighth abdominal segment, 

 and they differ from Glyptotendipes in the absence of 

 a spike macelike process on the abdominal tergites. 

 The larvae of the subgenus Stictochironomus have 

 six-segmented antennae (fig. 14:32n) and an even 

 number of labial teeth (fig. 14:32s), whereas the 

 other subgenera have five-segmented antennae (fig. 

 I4:54a,(7) and an odd or even (fig. 14:346,d) number 

 of labial teeth, not being clearly differentiated from 

 other genera. T. (E.) nigricans (Johannsen) (fig. 

 14:34a-c) is also a net-spinning plankton feeder, 

 spinning its tubes within rolled or folded leaves of 

 aquatic plants. 



California species: 



albescens Townes 1945. 

 dyari Townes 1945. 

 flavipes (Meigen) 1818. 

 nigricans (Johannsen) 1905. 

 profusus Townes 194 5. 

 quagga Townes 1945. 



Plumas County 



Humboldt, Placer counties 



Humboldt County 



Del Norte, Santa Clara 



Central California 



Placer County 



Genus Xenochironomus Kieffer 



The only species whose immature stages are known 

 is the Holarctic X. xenolabis (Kieffer), which lives 

 as inquilines in sponges. The antennae of the larva 

 are five-segmented and the labial plate has an odd 

 number of teeth, the paralabials are broad and long, 

 not widely separated, and the anterior margin of the 

 labrum has two pairs of styles. The pupae have 

 neither a comb nor a spur on the hind corners of the 

 eighth abdominal segment and segments two to five 

 each bear a number of dark brown spots, each with 

 a curved black spinule on the dorsum. This genus 

 has not yet been reported from California although 

 five species are known in North America. 



Genus Cryptochironomus Kieffer 



(Figs. 14:216; 14:34«,/,t-J) 



The larvae of most of the species of this genus are 

 predaceous, feeding on oligochaetes and midge larvae, 

 and differ strikingly from those of other Tendipedini. 

 The labial plate (fig. 14:342) consists of a broad 

 toothless middle part flanked by two obliquely placed 

 rows of darker lateral teeth; the maxillary palpi are 

 three to four times as long as broad; the antennal 

 blade is attached to the second segment; and the 

 sensorium is on the distal third of the first segment 

 (fig. 14:34;'). The prothoracic respiratory organs of 

 the pupae consist of a tuft of numerous filaments as 

 in Tendipes, but typically there is neither a comb 

 nor a spur on the hind corners of the eighth abdominal 

 segment (fig. 14:34/). 

 California species: 



digitatus (Malloch) 1915. 

 fulvus (Johannsen) 1905. 



Placer County 

 Lake County 



