Icteranthidium Michener, 1948

Niu, Zeqing, Yuan, Feng & Zhu, Chaodong, 2020, Review of the bee genus Icteranthidium Michener, 1948 (Hymenoptera: Apoidea: Megachilidae: Anthidiini) from China, Zoological Systematics 45 (3), pp. 206-218 : 207-208

Icteranthidium Michener, 1948

Icteranthidium Michener, 1948: 25 . Type species: Anthidium limbiferum Morawitz, 1875 , by original designation.

Diagnosis. According to Michener (2007), the diagnosis of the genus is as the follows: Moderate-sized (body length: 7.5–18.0 mm); mandible with 4 short and large teeth in female and with 3 large teeth in male; maxillary palpus twosegmented; subantennal suture straight or nearly so; preoccipital ridge not carinate above but strongly so laterally, the carina slanting forward to the posterior mandibular articulation; pronotal lobe strongly lamellate; axilla usually pointed posteriorly; omaulus lamellate, but not continued onto venter of thorax; propodeum without fovea behind spiracle and row of pits across upper margin; arolia absent; basal vein of forewing nearly straight and meeting vein Cu at acute angle, jugal lobe of hind wing less than half as long as vannal lobe; T2 without a strong carina across summit of basal concavity; posterior margins of terga not depressed; T6 of female concave in profile, the margin convex with a median notch; T7 of male with a midapical projection, sometimes also a tooth or projecting lobe at each side.

Key to Chinese known species of Icteranthidium .

1. Flagellum 10-segmented, female .........................................................................................................................................................2 Flagellum 11-segmented, male.............................................................................................................................................................6

2. Body length 13.0–15.0mm ( Fig. 26); paraocular area black ( Fig. 27)....................................................... I. laterale ( Latreille, 1809) Body length less than 13.0 mm; paraocular area yellow or ferruginous ...............................................................................................3

3. Paraocular area maculation reaching top of eye ( Fig. 2); paraocular area ferruginous; posterior margin of T2 with poorly developed median process.....................................................................................................................................................................................4 Paraocular area maculation not reaching top of eye ( Figs 16, 36); paraocular area yellow; posterior margin of T2 either truncate or with well recognized triangle median process......................................................................................................................................5

4. Body length 8.5–10.0mm ( Fig. 1); ventral scopa golden-yellow ( Fig. 1); T1 laterally with sparse punctation, interstices reach several puncture diameters ................................................................................................................................. I. croceum ( Morawitz, 1877) Body length 7.5 mm; ventral scopa yellowish-brown, with very narrow white hairs at side; T1 laterally with dense punctation, interstices not reach puncture diameters........................................................................................... I. ferrugineum ( Fabricius, 1787)

5. Body length 7.0–9.0mm ( Fig. 16); frons without yellow maculation or with a very little maculation under middle ocellus ( Fig. 17); mesepisternum black, without yellow maculation ( Fig. 16); posterior margin of T2 truncate ( Fig. 22); T1 laterally with dense punctation, interstices not reach puncture diameters.............................................................................. I. grohmanni ( Spinola, 1838) Body length 7.0 mm ( Fig. 36); frons with a large rounded yellow maculation under middle ocellus ( Fig. 37); mesepisternum with a large triangular yellow maculation ( Fig. 36); posterior margin of T2 with a broad triangle median process ( Fig. 42); T1 laterally with sparse punctation, interstices reach several puncture diameters......................................................... I. limbiferum ( Morawitz, 1875)

6. Body length 15.0–16.0mm ( Fig. 29); posterior margin of T7 deeply emarginate, midapical projection narrow and long ( Fig. 35)...... .................................................................................................................................................................. I. laterale ( Latreille, 1809) Body length less than 10.0 mm ( Figs 4, 11); posterior margin of T7 truncate, midapical projection broad and short ( Figs 10, 15, 25). ............................................................................................................................................................................................................7

7. Paraocular area maculation reaching top of eye ( Figs 5, 12); metasomal terga yellow or ferruginous except maculation ( Figs 9, 14). ........................................................................................................................................................................................................... 8 Paraocular area maculation not reaching top of eye ( Figs 20, 40)); metasomal terga black except maculation ( Figs 24, 44) ............9

8. Body length 6.0–8.0 mm ( Fig. 11); metasomal terga yellow except maculation ( Fig. 14); T1 laterally with dense punctation, interstices not reach puncture diameters............................................................................................................ I. ferrugineum ( Fabricius, 1787) Body length 8.0–9.0 mm ( Fig. 4); metasomal terga ferruginous except maculation ( Fig. 9); T1 laterally with sparse punctation, interstices reach several puncture diameters .......................................................................................... I. croceum ( Morawitz, 1877)

9. Body length 8.0–9.0 mm ( Fig. 19); mesepisternum black, without yellow maculation ( Fig. 19); T1 laterally with dense punctation, interstices not reach puncture diameters; T7 rectangulary rounded ...................................................... I. grohmanni ( Spinola, 1838) Body length 6.0 mm ( Fig. 39); mesepisternum with a large triangular yellow maculation ( Fig. 39); T1 laterally with sparse punctation, interstices reach several puncture diameters; T7 rounded laterally .................................................. I. limbiferum ( Morawitz, 1875)