CHIRONOMID MIDGES OF CALIFORNIA — SUBLETTE 121 



2. Anterior and posterior margins of pronotum nearly parallel; dististyle of 



male genitalia straight or slightly curved 3 



Anterior margin of pronotum strongly produced at apex; dististyle of male 

 genitalia with distinctively produced mesial carina (in cleared genitalia 

 mounts difficult to see) T. carinatu, new species 



3. Spot over r-m cross vein large extending broadly into cells on either side; 



wing spots dark and tend to coalesce (cf. Malloch, 1915, pi. 27, fig. 5); 

 dististyle of male genitalia straight ; tapering to tip . T. stellatus (Coquillett) 

 Spot over r-m smaller extending into adjacent cells only narrowly; wing spots 

 smaller and more distinct, isolated; dististyle slightly bent, broadened 

 before apex T. parastellatus, new species 



4. Dorsolateral bristles in single row to scutellum; with 4 spots in cell behind 



R4+5 5 



Dorsolateral bristles in single row to just anterior to scutellum where row 

 expands to form clump of 8-12 bristles . . . . T. grodhausi, new species 



5. Pronotum only slightly produced towards apex; dististyle simple, no carina, 



evenly curved T. neopunctipennis, new species 



Pronotum strongly produced at apex; dististyle with unique apical carina 

 bearing subterminal spine T. imperialis, new species 



Procladius barbatulus, new species 



Figures 5e,/ 



Holotype male: USNM 65519, Hume Lake, Fresno Co., Sept. 24, 

 1957, G. 



Postocular bristles in 2 staggered rows. Eyes with usual parallel- 

 sided dorsal extensions. Clypeal bristles 9; palpi ratio 8:13:18:30. 

 Antennal ratio 1.70. 



Head, thorax, and abdomen dark brown, somewhat lighter at 

 shoulders and on pleura. Halteres dark. Pronotum with 18 fine 

 lateral bristles. One supra-alar bristle; prealar bristles 13; dorso- 

 medial bristles 3 on either side of midline on prescutellar area; dorso- 

 lateral bristles in single row; anterolateral bristles 6; scutellar bristles 

 about 28, somewhat scattered, posteriorly forming transverse row. 



Wings darkened only over r-m and, faintly, over m-cu; membrane 

 well haired with black hairs; anterior veins somewhat darker than 

 posterior. Wing length 2.22 mm.; venarum ratio 1.50. 



Legs uniformly dark brown. Fore tarsus with short beard, 4 times 

 tarsal diameter. Fore leg with single tibial spur, slightly shorter 

 than diameter of apex of tibia; middle leg spurs 40:30; hind leg spurs 

 53:32, comb of 11 spines. 



Leg proportions: 



Leg 



F Ti Tai Tai Tai Tat Tm Ratio 



Fore 45 59 44 20 15 10 5 0.74 



Middle 51 56 37 0.66 



Hind 45 61 43 20 16 9 7 0.70 



Abdomen almost uniformly darkened with only faint suggestion 

 of lighter color apically on segments; with about 60 bristles on tergite 

 II. 



