Allocladius Kieffer

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, Zootaxa 2849 (1), pp. 1-314 : 49

Key to known female imagines of Allocladius Kieffer

1. Gonocoxite IX projecting caudally beyond posterior margin of tergite IX ( Fig. 21 D, F ), seminal capsule, excluding neck, nearly circular, all femora longer than 500 µm, hind tibia 630–774 µm long.............................. A. soemmei sp. n. (p. 59)

– Gonocoxite IX not projecting, seminal capsule ovoid, fore femora 225–450 µm long, hind tibia 324–576 µm long............ 2

2. Costa proximal to apex of R 4+5 with 20–52 non-marginal setae, LR 1 0.51–0.63......................................... 3

– Costa proximal to apex of R 4+5 with 0–1 non-marginal setae, LR 1 0.41–0.47.......................................................................... A. nanseni (Kieffer) (p.66), A. arenarius (Strenzke) (p.72) and A. aizaiensis (Wang) (p.63)

3. Costa proximal to apex of R 4+5 with about 52 non-marginal setae including 10 proximal of FR; wing length about 1.4 mm; about 13 dorsocentrals; R with about 11 setae......................................... A. longicrus (Kieffer) (p. 84)

– Costa proximal to apex of R 4+5 with 14–40 non-marginal setae including 0–5 proximal of FR; wing length 0.90–1.35 mm; 6–12 or 14–21 dorsocentrals; R with 6–10 or 11–12 setae................................................................. 4

4. Supraalar setae absent, segment X with sharply pointed posterolateral corners ( Fig. 7 E, F ), 9–12 or 14–21 dorsocentral setae... 5

– Supraalar setae present, segment X with bluntly triangular to rounded posterolateral corners, 6–11 dorsocentral setae.......... 6

5. Sternite VIII without anteromedian setae, 14–21 dorsocentral setae, LR 1 0.51–0.53................ A. wirthi (Freeman) (p. 53)

– Sternite VIII with more than 20 median setae, 9–12 dorsocentral setae, LR 1 0.57–0.63; Gough, Tristan da Cunha and Nightingale Island.............................................................. A. lusciniolus Saether et Andersen , sp. n. (p. 57)

6. Segment X with rounded posterolateral corners..................................... A. bilobulatus (Edwards) (p. 99)

– Segment X with bluntly triangular posterolateral corners........................................................... 7

7. LR 3 0.55–0.57, LR 2 0.48–0.51............................................................ A. azoricus (Storå) (p. 88)

– LR 3 0.52–0.54, LR 2 0.43–0.48........................................................ A. conigerus (Freeman) (p. 79)

Figures

FIGURE 7. Allocladius spp., male hypopygium, left dorsal aspect, right ventral aspect. A—A. fortispinatus (Edwards); B—F. A. lusciniolus Saether et Andersen, sp. n.; female genitalia. B—ventral view; C—dorsal view; D—ventrolateral lobe; E—dorsomesal lobe; F—apodeme lobe. (A from Andersen et al. 2010.)

FIGURE 21. Allocladius conigerus (Freeman) comb. n., male. A—wing; B—head; C—third palpomere; D—cibarial pump and stipes; E—virga; F—hypopygium, left dorsal aspect, right ventral aspect.