2 crowns of claws; lives in running water 



Cardiocladius Kieffer 



Not as above 24 



. Convex side of mandibles with several transverse 



wrinkles (fig. 14:27o) Cricotopus van der Wulp 



Convex side of mandibles at most with 1 or 2 furrows 



Hydrobaenus Fries (part) 



. Antennae 5-segmented, more or less elongate, somewhat 

 curved, mounted on a prominent tubercle (figs. 14:28d; 

 14:32a); abdominal segments 2-6 each with a bifid 

 plumose bristle on each lateroposterior angle; claws of 

 posterior prolegs arranged in the form of a horseshoe 



Calopsectra Kieffer 



Antennae 5- or 6-segmented, shorter, usually straight, 

 not mounted on tubercles (fig. 14:35<i); abdominal seg- 

 ments without lateral plumose bristles (fig. 14:312) 



26 



, Antennae with 6 segments, a Lauterborn organ on or 

 near apex of 2nd segment and another on apex of 3rd 

 segment (fig. 14 :33a, i); labial plate usually with even 



number of teeth (fig. 14:33c, i) 27 



Antennae with 5 segments (figs. 14:31a,e; 14:32i,n) 



31 



, Two to 4 middle teeth of labial plate pale, the others 



dark (fig. 14:33c, i) 28 



All labial teeth dark 29 



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



Microtendipes Kieffer 



Four middle teeth pale (fig. 14:33t) 



Paratendipes Kieffer 



Striations of paralabial plates scarcely visible; middle 

 pair of teeth projecting beyond laterals (fig. 14:32r) 



Stenochironomus Kieffer 



Striations of paralabials distinct 30 



Middle pair of teeth slightly shorter than 1st laterals 



Tanytarsus 



Middle pair of teeth longer than first laterals .... 



L auterb orniella Bause 



Labial plate with a broad toothless middle part, flanked 

 by 2 obliquely placed rows of darker lateral teeth (fig. 

 14:342); maxillary palpus 3-4 times as long as broad; 

 antennal sensorium at distal 3rd of basal segment 



(fig. 14:34;') Cryptochironomus Kieffer (part) 



Labium a toothed plate (figs. 14:316,(7; 14:35a, g, h); 

 maxillary palpus only about twice as long as broad; 

 antennal sensorium on proximal or middle 3rd of basal 



segment (figs. 14:32i,n; 14:34a, g) 32 



Ventral gills present on 8th abdominal segment (figs. 

 14:312; 14:35/) ... Tendipes Meigen (in strictest sense) 



Ventral gills absent on 8th abdominal segment 33 



Labial plate with an even number of teeth (figs. 14:316; 



14:32s; 14:346,0") Cryptochironomus Kieffer (part) 



Tanytarsus van der Wulp 



P olypedilum Kieffer 



Labial plate with an odd number of teeth (figs. 14:31<7, 



14:32;'; 14:35a,?,A) 34 



Paralabial plates nearly touching on median line, each 

 more than 4 times as broad as long, as in Calopsectra 

 (fig. 14:32;'); labial plate with 9 teeth; preanal papillae 

 nearly 3 times as long as broad; anal gills short and 



plump (fig. 14:32o) Pseudochironomus Malloch 



Paralabial plates broadly separated along median line, 

 or not so broad as above (figs. 14:31<7; 14:35a); preanal 

 papillae shorter (fig. 14:35;').. Tendipes Meigen (part) 



Glyptotendipes Kieffer 

 Harnischia Kieffer 



Pupae 



Cephalothorax swollen and differentiated from the 

 slender abdomen; tubercles, spines, or bristles absent 

 from anterior margin of thorax (fig. 14:22i); prothoracic 

 respiratory organs with open stigmata (figs. 14:226,e; 

 14:24a); anal segment often with a 2-lobed swimming 

 paddle or caudal fin (fig. 14:22A) (PELOPIINAE) ... 5 



10. 



11 



12 



411 

 Wirth and Stone: Diptera 



Cephalothorax not swollen and strongly differentiated 

 from the abdomen (figs. 14:27?; 14:28/, A; 14:39/); ■ 

 pair of tubercles, spines, or bristles presenl on tin- 



anterior margin of the thorax 2 



Prothoracic respiratory organs usually without open 



stigmata (figs. 14:25o; 14:320,2) 3 



Prothoracic respiratory oreans with open stigmata 



(fig. 14:266, m) (PODONOMINAE) 11 



Prothoracic respiratory organs a tuft of numerous 

 filaments (fig. 14:31;') or if simple (fig. 14:836, A) tin- 

 hind corner of 8th abdominal segment with a strong 

 spine or comb (fig. 14:33e,.a); anal segment usually a 

 cleft swimming paddle with a fringe of slender filament 



(fig. 14:32A,p) (TKNDIPEDINAE) 28 



Prothoracic respiratory organ simple or absent; hind 

 corner of 8th abdominal segment without spine or comb, 

 anal segment at most with 3-5 strong bristles at or near 



the apex 4 



Hind margins of abdominal segments with a row of 

 strong, almost perpendicular spines or bristles ffiy. 



(fig. 14:25a) (DIAMESINAE) 13 



Hind margins of abdominal segments without a row of 

 strong erect spines or bristles, sometimes w.ith small 

 warts, or posteriorly directed points or spines (1IYDRO- 



BAENINAE, CLUNIONINAE) 17 



Lobes of caudal fin well developed, the outer margin 

 bare or beset with small prickles, the 2 filaments near 



middle of margin (fig. 14:22A) Pentaneura Philippi 



Lobes of caudal fin not well developed (fig. 14:23c), or 

 if so, the outer margin hairy or distinctly dentate, the 



2 filaments proximad of the middle (fig. 14:23/) 6 



Lobes of caudal fin not well developed; prothoracic 

 respiratory organ brown, short ovoid, with a single 

 small opening; no distinct mark in middle of 1st ab- 

 dominal segment Pelopia Meigen 



Lobes of caudal fin well developed 7 



Abdominal segments dorsally with strong bristles set 

 on tubercles; lobes of caudal fin pointed (fig. 14:23/) 



Anatopynia Johannsen (part) 



Abdominal segments dorsally without strong bristles 



set on tubercles 8 



Lobes of caudal fin with the outer and hind margins 



beset with numerous small prickles or dentate 9 



Lobes of caudal fin fringed with long, fine hairs .... 10 

 Prothoracic respiratory organs clavate, about 2.3 times 

 as long as broad; spiracular disc large, transversely 

 oval, the chamber alveolate (fig. 14:23e); venter and 

 inner margins of lobes of caudal fins finely dentate 



(fig. 14:23/) Anatopynia Johannsen (part) 



Prothoracic respiratory organs fusiform, the chamber 

 broadened distally forming a funnel under the circular 

 spiracular disc (fig. 14:24a); margin of lobes of caudal 

 fin with numerous prickles (fig. 14:246) 



Procladius Skuse 



Prothoracic respiratory organ flattened, a little more 

 than twice as long as broad; lateral margin of 7th 

 abdominal segment with 6 rather short, stiff bristles 



Clinotanypus Kieffer 



Prothoracic respiratory organs more than 3 times as 

 long as broad; lateral margin of 7th abdominal segment 

 with 8 long, lanceolate filaments . Coelotanypus Kieffer 

 Posterior margins of abdominal segments with spinose 

 crossbands and with lateral spines; caudal segment at 

 most with 2 strong distal spines or long bristles (fig. 

 14:26;') Boreochlus Edwards, Podonomus Philippi 



Posterior margins of abdominal segments without 



spinose . crossbands or lateral spines; caudal segment 



with 2 long, slender appendages or broad, bilobed 

 swimming paddles 12 



Posterior margin of 8th abdominal segment without 

 emargination; 9th segment with 2 long caudal points 



(fig. 14:26a); prothoracic respiratory organ obconical 

 (fig. 14:266) Lasiodiamesa Kieffer 



Posterior margin of 8th abdominal segment deeply 

 emarginate mesad; 9th segment with roundly pointed 

 caudal lobes (fig. 14:26&); prothoracic respiratory organ 

 spindle-shaped (fig. 14:26m) Trichotanypus Kieffer 



