Allocladius Kieffer
Creators: name: Ferrington Jr, Leonard C.
name: Saether, Ole A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Allocladius

description: Key to male imagines of Allocladius Kieffer   
1. With single or double pars ventralis....................................................................... 2  
– Pars ventralis absent.................................................................................... 9  
 2. With two large pars ventralis reaching to 0.50–0.76 gonocoxite length (Fig. 30 A); Neotropical.................................................................................................. A. neobilobulatus (Paggi) (p. 96)   
– With single, small to large pars ventralis at most reaching to 0.45 gonocoxite length................................. 3  
 3. Anal point about 80 µm long; accessory lobe of inferior volsella absent (Fig. 31 E); Palaearctic.................................................................................................... A. bothnicus (Tuiskunen) (p. 93)   
– Anal point shorter; accessory lobe of inferior volsella absent to well developed; Neotropical and Afrotropical............ 4  
 4. Pars ventralis small (about 18–36 µm long) digitiform; accessory lobe of inferior volsella well developed, reaching much further posterior than inferior volsella; Argentina...................................... A. bilobulatus (Edwards) (p. 99)   
– Pars ventralis longer (about 45–90 µm long) digitiform, rounded or square; accessory lobe of inferior volsella absent to well developed, when well developed not reaching much further posterior than inferior volsella........................... 5  
 5. Pars ventralis much longer than broad, digitiform; Ecuador................ A. scrotus Andersen, Saether et Mendes (p. 93)   
– Pars ventralis as wide as or wider than long, circular, triangular or square......................................... 6  
 6 Pars ventralis square, much wider than long; Chile...................... A. quadrus Andersen, Saether et Mendes (p. 96)   
– Pars ventralis sphaeroid to bluntly triangular, about as wide as long.............................................. 7  
 7. Pars ventralis with setae, sphaeroid; Chile............................ A. globosus Andersen, Saether et Mendes (p. 97)   
– Pars ventralis without setae, triangular to circular............................................................. 8  
 8. Pars ventralis bluntly triangular, AR 1.14–1.35; Afrotropical........................... A. rectilobus (Freeman) (p. 91)   
 – Pars ventralis circular, AR 1.36–1.65; Afrotropical........................................ A. deborae sp. n. (p. 97)   
 9. Apparently only 2 acrostichals; superior volsella slightly developed as basal swelling fused with long, narrow and adpressed inferior volsella without accessory lobe; supraalar absent; costal extension long; Argentina. A. fortispinatus (Edwards) (p. 90)   
 – Three or more acrostichals; superior volsella barely indicated or well developed, not fused with not adpressed inferior volsella; supraalar usually present; costal extension short or absent except in A. hirticaudatus sp. n........................... 10   
10. Accessory lobe of inferior volsella large, lobe-like, free at apex................................................ 11  
– Accessory lobe adpressed, weak or absent................................................................. 17  
11. Superior volsella consisting of rounded, well developed basal swelling of inner margin of gonocoxite.................. 12  
 – Superior volsella barely indicated (Fig. 6 F); Australia................................... A. wirthi (Freeman) (p. 53)   
 12. Virga consisting of weak median plate, which is often difficult to distinguish, and 2 lateral groups of spinules (Fig. 23 E, F); Holarctic....................................................................... A. nanseni (Kieffer) (p. 66)   
– Virga consisting of a small, single, rounded, usually dark sclerotized plate without lateral spine groups.................13  
 13. Both inferior volsella and accessory lobe long and narrow (Fig. 11 F), costa not extended; Kenya,? Uganda................................................................................................ A. niger Kieffer (p. 77)   
– Inferior volsella triangular, accessory lobe broad and rounded; costa usually slightly extended........................ 14  
 14. AR about 0.3, no supraalar, antepronotal lobes slightly reduced medially; Turkey, China.......... A. caspersi sp. n. (p. 51) – AR 0.8–1.8, 1 supraalar, antepronotal lobes medially well developed............................................ 15   
 15. R 4+5 ending distal to apex of M 3+4, AR 1.12–1.44; China................................. A. aizaiensis (Wang) (p. 63)   
 – R 4+5 ending slightly to well proximal to apex of M 3+4, AR either about 0.84 or 1.42–1.77............................ 16   
 16. R 4+5 ending well proximal to apex of M 3+4, AR about 0.84, wing length about 1.5 mm; Afrotropical....................................................................................................... A. salti (Freeman) (p. 75)   
 – R 4+5 ending slightly proximal to apex of M 3+4, AR 1.42–1.77, wing length 1.83–2.16 mm; Tanzania...................................................................................................... A. soemmei sp. n. (p. 59)   
17. Superior volsella consisting of rounded, well-developed basal swelling of inner margin of gonocoxite.................. 18  
– Superior volsella weak or absent......................................................................... 20  
 18. Superior volsella projecting lobe-like posteriorly (Fig. 15 E); Ethiopia......................... A. bubatus sp. n. (p. 83)   
– Superior volsella rounded.............................................................................. 19  
 19. Inferior volsella with adpressed weak accessory lobe; R 4+5 ending slightly proximal to apex of M 3+5; AR 1.18–1.45; LR 1 0.42– 0.46, LR 2 0.43–0.47, LR 3 0.50–0.54; Afrotropical.................................... A. conigerus (Freeman) (p. 79)   
 – Inferior volsella without accessory lobe, R 4+5 ending above apex of M 3+4; AR 0.75–0.95; LR 1 0.47–0.50, LR 2 0.48–0.53, LR 3 0.55–0.60; The Azores............................................................. A. azoricus (Storå) (p. 88)   
20. Anal point absent, ridge-like or less than 20 µm long; inferior volsella digitiform, slightly curved..................... 21  
 – Anal point 30–43 µm long narrow, nearly parallel-sided, with laterally directed setae at apex; inferior volsella weak; Tanzania............................................................................. A. hirticaudatus sp. n. (p. 57)   
 21. Anal tergite apparently with complex anal point or perhaps a longitudinal ridge in place of anal point; AR about 0.6, LR 1 0.45, LR 2 0.46, LR 3 0.49; Japan........................................................ A. jintuoctavus (Sasa) (p.57)   
– Anal point absent or present, but not complex, AR about 0.8 or about 1.4......................................... 22  
 22. Anal point absent, AR about 0.8, LR 1 0.49, LR 2 0.49, LR 3 0.55; Austria, Poland.............. A. longicrus (Kieffer) (p. 84)   
 – Anal point about 16 µm long, AR about 1.4, LR 1 0.43, LR 2 0.44, LR 3 0.50; China.............. A. wangorum sp. n. (p. 78)
description: Published as part of Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, pp. 1-314 in Zootaxa 2849 (1) on pages 48-49, DOI: 10.11646/zootaxa.2849.1.1, http://zenodo.org/record/5288200