Afronurus species
Creators: name: Zhang, Wei
name: Lei, Zhi-Ming
name: Li, Wen-Juan
name: Zhou, Chang-Fa
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Ephemeroptera
Heptageniidae
Afronurus

description: Key to six common Chinese Afronurus species (nymph)
1. Anterior margin of head capsule without pale dot ............................................................................ 2
– Anterior margin of head capsule with pale dots ............................................................................... 3
2. Lingua and superlinguae subequal in length (as in Fig. 8B); crown of galea-lacinia with 12–14 comb-shaped setae; caudal filaments pale but with brown dots on articulations (Fig. 7O); glossae slightly oblong (as in Fig. 2F) ........................................................ A. yixingensis (Wu & You, 1986)
– Lingua obvious shorter than superlinguae (Fig. 10B); crown of galea-lacinia with 16–18 combshaped setae; proximate part of caudal filaments pale but other parts yellowish brown (Fig. 7F); glossae lobe rounded (Fig. 10E) ............................................... A. hunanensis (Zhang & Cai, 1991)
3. Head capsule with two rows of pale dots (8–9) on anterior margin (Fig. 7G, J); caudal filaments with brown stripes on articulations (Fig. 7I, L, O) ................................................................................... 4
– Head capsule with 2–5 pale dots on anterior margin (Figs 1A, 7A); caudal filaments pale to yellowishbrown, without any stripe (Figs 1A, 7C) .......................................................................................... 5
4. Abdominal terga with oblique stripes laterally (Fig. 7H); crown of galea-lacinia with 11–13 combshaped setae; posterolateral projections of segments III–VIII moderately developed (Fig. 7H); lingua shorter than superlinguae (as in Fig. 10B) ................................. A. obliquistriatus (You et al., 1981)
– Abdominal terga without oblique stripes; crown of galea-lacinia with 14–16 comb-shaped setae; posterolateral projections of segments III–VIII weakly developed (as in Fig. 7E); lingua and superlinguae subequal in length (as in Fig. 2C) ..................... A. rubromaculatus (You et al., 1981)
5. Gill I sickle-like (Fig. 3F); glossae slightly oblong (Fig. 2F) .................. A. drepanophyllus sp. nov.
– Gill I banana-shaped (Fig. 9F); glossae lobe rounded (Fig. 8E) ........................................................ ...................................................................................................... A. furcatus (Zhou & Zheng, 2003)
Key to six common Chinese Afronurus species (male imago)
1. Penes with plate-like titillators ......................................................................................................... 2
– Penes with spine-like titillators ......................................................................................................... 3
2. Penes connected by foliated structure at ⅔ length from base; titillators about ⅔ of penes in length (Fig. 13A–B) ................................................................................ A. furcatus (Zhou & Zheng, 2003)
– Penes lobes widely divergent; titillators about half of penes in length (Fig. 13C–D) ........................ ................................................................................................... A. hunanensis (Zhang & Cai, 1991)
3. Remarkable projection between divergent penial lobes ................................................................... 4
– Penial lobes divergent but without projection between them ........................................................... 5
4. Spine-like projection between two penial lobes (Fig. 13I–J); abdominal terga with two yellowishbrown longitudinal stripes submedially (Fig. 12E) ....................... A. yixingensis (Wu & You, 1986)
– Cone-shaped projection between two penial lobes (Fig. 13G–H); abdominal terga I–IX with distinguishable reddish stripes laterally (Fig. 12D) ................ A. rubromaculatus (You et al., 1981)
5. Abdominal terga transparent, with brown oblique stripes laterally (Fig. 12C); penial lobes slightly divergent and with a narrow V-shaped cleft between them (Fig. 13E–F) .......................................... .................................................................................................... A. obliquistriatus (You et al., 1981)
– Abdominal terga with broad longitudinal stripe and pair of pale dots medially (Fig. 12A); penial lobes obviously divergent and with a deep U-shaped cleft between them (Fig. 5D–E) ..................... .................................................................................................................. A. drepanophyllus sp. nov.
description: Published as part of Zhang, Wei, Lei, Zhi-Ming, Li, Wen-Juan & Zhou, Chang-Fa, 2021, A contribution to the genus Afronurus Lestage, 1924 in China (Ephemeroptera: Heptageniidae, Ecdyonurinae), pp. 94-116 in European Journal of Taxonomy 767 (1) on pages 113-114, DOI: 10.5852/ejt.2021.767.1491, http://zenodo.org/record/5514875