Tetralonioidella Strand, 1914

Niu, Zeqing, Yuan, Feng & Zhu, Chaodong, 2017, Taxonomic study of the genus Tetralonioidella Strand from China (Hymenoptera: Apidae: Melectini), Zoological Systematics 42 (4), pp. 418-445 : 419-420

publication ID	https://doi.org/ 10.11865/zs.201718
publication LSID	lsid:zoobank.org:pub:25D9FD67-3B6B-4F95-88D1-190FDD5C2E54
persistent identifier	https://treatment.plazi.org/id/03C38791-FFDE-CC33-8CD9-F96C72FDF962
treatment provided by	Diego
scientific name	Tetralonioidella Strand, 1914
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Treatment

Tetralonioidella Strand, 1914 View in CoL

Tetralonioidella Strand, 1914 View in CoL (Apr.-May): 140. Type species: Tetralonia View in CoL (?) hoozana Strand, 1914 View in CoL , monobasic.

Protomelissa Friese, 1914 (June) : 322. Type species: Protomelissa iridescens Friese, 1914 = Tetralonia View in CoL (?) hoozana Strand, 1914 View in CoL , by designation of Sandhouse, 1943: 592. [See also Michener, 1997]

Callomelecta Cockerell, 1926: 621 . Type species: Callomelecta pendleburyi Cockerell, 1926 , by original designation.

Diagnosis. Body size small to medium (body length 8.5 to 13.5 mm); rather slender melectine bees without patches of appressed white pubescence, metasomal terga uniformly covered with feathery appressed hairs, typical lateral hair patches of pale short pubescence on metasomal terga absent (sometimes conspicuous hair bands of yellowish to reddish brown hairs developed); marginal cell distinct longer than distance from its apex to wing tip, extending well beyond the third submarginal cell, usually slightly shorter than three submarginal cells together; scutellum convex, with distinct longitudinal carina in the middle and two ventrally curved spines laterally.

Key to Chinese species of Tetralonioidella View in CoL .

1. Female, flagellum 10-segmented ( Figs 3d View Figure 3 , 4d View Figure 4 , 15d View Figure 15 , 22d View Figure 22 ) .................................................................................................................... 2 Male, flagellum 11-segmented ( Figs 1d View Figure 1 , 5d View Figure 5 , 7d View Figure 7 , 9d View Figure 9 , 11d View Figure 11 , 13d View Figure 13 , 16d View Figure 16 , 18d View Figure 18 , 20d View Figure 20 ).....................................................................................8

2. Fore wing with numerous minute hairs apically, distinct papillae absent ( Fig. 22e View Figure 22 ) ............................................................................ 3 Fore wing with distinct numerous papillae apically ( Figs 3e View Figure 3 , 4e View Figure 4 , 15e View Figure 15 ) ................................................................................................ 4

3. Pubescence on scutum and metasomal terga denser, fox-red ......................................................................... T. heinzi Dubitzky, 2007 View in CoL Pubescence on scutum and metasomal terga sparser, yellowish-brown, not fox-red ( Figs 22a, f, g View Figure 22 ) ...... T. wuae Niu & Zhu View in CoL , sp. nov.

4. Inner rami of hind tarsal claws claw-like ( Fig. 4h View Figure 4 ) ..............................................................................................................................5 Inner rami of hind tarsal claws axe-shaped ( Figs 3h View Figure 3 , 15h View Figure 15 ) ...................................................................................................................7

5. Scutum pubescent colour-pattern bicoloured, with broad, transverse, blackish-brown pubescent stripe between tegulae..................... .......................................................................................................................................................... T. himalayana ( Bingham, 1897) Scutum View in CoL pubescent colour-pattern uniform, without broad, transverse, blackish-brown pubescent stripe between tegulae ..................6

6. Scutum pubescence pale gray, intermixed with blackish hairs ( Figs 4a, f View Figure 4 ) .......................... T. damenglongensis Niu & Zhu View in CoL , sp. nov. Scutum pubescence uniformly fox-red........................................................................................................ T. hoozana ( Strand, 1914) View in CoL

7. Apical margin of labrum almost straight in frontal view ( Fig. 3c View Figure 3 ); T1 covered with short, light yellowish-brown pubescence, T2–T4 with transverse lateral patches of light yellowish-brown pubescence ( Fig. 3g View Figure 3 ) ................................ T. pendleburyi ( Cockerell, 1926) Apical margin of labrum weakly concave in frontal view ( Fig. 15c View Figure 15 ); T1–T4 uniformly covered with short, light yellowish-brown pubescence ( Fig. 15g View Figure 15 ) ................................................................................................................... T. longqiensis Niu & Zhu View in CoL , sp. nov.

8. Fore wing with numerous minute hairs apically, distinct papillae absent ( Fig. 21a View Figure 21 ) ............................................................................ 9 Fore wing with distinct numerous papillae apically ( Figs 2a View Figure 2 , 6a View Figure 6 , 8a View Figure 8 , 10a View Figure 10 , 12a View Figure 12 , 14a View Figure 14 , 17a View Figure 17 , 19a View Figure 19 ) .......................................................... 10

9. Ventral surface of apical part of S7 with stiff, short to long dense setae laterally ( Fig. 21c View Figure 21 ) ................. T. wuae Niu & Zhu View in CoL , sp. nov. Ventral surface of apical part of S7 with stiff, short and sparse setae laterally............................................... T. heinzi Dubitzky, 2007 View in CoL

10. Scutum pubescent colour-pattern bicoloured ( Figs 1a, e View Figure 1 , 7a, e View Figure 7 ) ......................................................................................................... 11 Scutum pubescent colour-pattern uniform ( Figs 5a View Figure 5 , 9a View Figure 9 , 11a View Figure 11 , 13a View Figure 13 , 16a View Figure 16 , 18a View Figure 18 ) ...................................................................................... 12

11. Scutum with broad, transverse, blackish-brown pubescent stripe between tegulae ( Fig. 1e View Figure 1 ); metasomal terga all covered with short, light yellowish-brown pubescence, not forming hair bands ( Figs 1f View Figure 1 , 2a View Figure 2 ); apical margin of median process of S8 convex ( Fig. 2d View Figure 2 )..... .......................................................................................................................................................... T. himalayana ( Bingham, 1897) Scutum View in CoL with narrow, transverse, pale gray pubescent stripe between tegulae ( Fig. 7e View Figure 7 ); T1–T5 with short, light yellowish-brown hair bands ( Figs 7f View Figure 7 , 8a View Figure 8 ); apical margin of median process of S8 distinctly concave ( Fig. 8d View Figure 8 )................. T. emeiensis Niu & Zhu View in CoL , sp. nov.

12. Scutum pubescence uniformly fox-red or yellowish-orange ( Fig. 9e View Figure 9 ) ............................................................................................... 13 Scutum pubescence pale or light yellowish-brown ( Figs 5e View Figure 5 , 11e View Figure 11 , 13e View Figure 13 , 16e View Figure 16 , 18e View Figure 18 )............................................................................... 16

13. Apical margin of labrum shallowly concave...................................................................................................................................... 14 Apical margin of labrum nearly straight ( Fig. 9c View Figure 9 ) .............................................................................................................................. 15

14. Scutum pubescence uniformly fox-red; apical margin of median process of S8 straight, not concave ....... T. hoozana ( Strand, 1914) Scutum View in CoL pubescence yellowish-orange; apical margin of median process of S8 slightly concave ......... T. fukienensis Liftinck, 1983 View in CoL

15. Apical median part of S7 distinctly concave ..................................................................................... T. pendleburyi ( Cockerell, 1926) Apical median part of S7 slightly convex ( Fig. 10c View Figure 10 )................................................................... T. guomenensis Niu & Zhu View in CoL , sp. nov.

16. Apical margin of labrum nearly straight ( Fig. 5c View Figure 5 ) ........................................................................ T. dinghuensis Niu & Zhu View in CoL , sp. nov. Apical median margin of labrum slightly convex medially or apical margin of labrum concave ( Figs 11c View Figure 11 , 13c View Figure 13 , 16c View Figure 16 , 18c View Figure 18 ) .............. 17

17. Apical median margin of labrum slightly convex medially ( Figs 11c View Figure 11 , 13c View Figure 13 ) .......................................................................................18 Apical margin of labrum concave ( Figs 16c View Figure 16 , 18c View Figure 18 ) .............................................................................................................................19

18. Apical margin of median process of S8 straight ( Fig. 12d View Figure 12 ).......................................................... T. leigongensis Niu & Zhu View in CoL , sp. nov. Apical margin of median process of S8 slightly concave ( Fig. 14d View Figure 14 ) ............................................. T. longqiensis Niu & Zhu View in CoL , sp. nov.

19. Apical margin of median process of S8 concave, without projection medially ( Fig. 17d View Figure 17 ) ...... T. maniwengensis Niu & Zhu View in CoL , sp. nov. Apical margin of median process of S8 concave, but with a projection medially ( Fig. 19d View Figure 19 ) ....... T. tianmuensis Niu & Zhu View in CoL , sp. nov.