Habropoda, Smith, 1854

Tran, Ngat Thi, Engel, & Michael S., 2025, A contribution to the knowledge of Habropoda from Vietnam (Hymenoptera: Apidae), Raffles Bulletin of Zoology 73, pp. 125-152 : 148-150

Key to species of Habropoda from Southeast Asia

(Males of H. orbifrons Lieftinck, 1974 and H. tainanicola Strand, 1913 remain unknown)

1. Female .....................................................................................2

– Male .........................................................................................7

2. Vertex in facial view faintly to noticeably concave between compound eyes and ocelli ( Figs 2A , 6A , 14A , 16A ); clypeus short, apical margin at or only slightly below lower tangent of compound eyes by at most below 25% clypeal length; clypeus without shining keel in proximal third, with markings variable; body not uniformly covered in setae......................................3

– Vertex in facial view straight between compound eyes and ocelli; clypeus elongate, extending well below lower tangent of compound eyes by below about 50% clypeal length; clypeus with a shining longitudinal keel in basal third, with a triangular creamy-white mark apically ( Fig. 10A ); body uniformly with yellowish-orange to reddish setae ( Fig. 9A, B ) ....................... ................................... Habropoda sutepensis Cockerell, 1929

3. Mesosoma covered with uniform setae and metasomal terga without setal bands apically or with steal bands apically but terga III–VI covered with the setae of variable colouration..4

– Mesosoma with yellow-orange to bright yellowish tawny setae, except broad black setal band medio-horizontally between tegulae; tergum I with orangish setae except an apical band of black setae; tergum II with black setae except yellowish-orange setal band apically; terga III with apical half covered by yellowish-orange setae, tergum IV fully covered with yellow-orange to bright orange setae ( Fig. 2F )........................ ..................................... Habropoda mimetica Cockerell, 1927

4. Metasomal terga with apparent setal bands apically; terga III–VI covered with the setae of variable colouration ......................5

– Metasomal terga without setal bands apically, terga III–VI covered with ferruginous, yellow-orange to reddish-yellow setae ( Fig. 13B ) ............. Habropoda tainanicola Strand, 1913

5. Clypeus gently convex; terga I–IV with thin setal bands apically.....................................................................................6

– Clypeus strongly convex; terga I–IV with thick, uniform, yellowish-orange setal bands apically; tergum V with orange intermixed with all black setal tuft apically ( Fig. 6F ) ............. ..................................... sinensis complex (refer to key above)

6. Supraclypeal area black; clypeus with dense punctures on basal half and sparser punctures on remainder, with inverted T-shaped, chrome-yellow mark medially ( Fig. 16A ); terga I–IV with linear setal bands apically, about 0.2 mm ( Fig. 16F )...... .................................. Habropoda tumidifrons Lieftinck, 1974

– Supraclypeal area with broad, slightly angulate, yellow crescent bordering sulcus; clypeus with sparser punctures and conspicuous anchor-shaped chrome-yellow mark medially (see Lieftinck, 1974: fig. 10); terga I–IV with a little broader setal bands apically, about 0.3 mm or more..................................... ...................................... Habropoda orbifrons Lieftinck, 1974

7. Vertex in facial view faintly to noticeably concave between compound eyes and ocelli ( Figs 3A , 7A , 17A ); clypeus short, apical margin at or only slightly below lower tangent of compound eyes by at most below 25% clypeal length; clypeus without shining keel in proximal third, with markings variable; body not uniformly covered in setae male gonostylus with the dorsal process rounded or expanded apically and the ventral process spatular or other shape...............................................8

– Vertex in facial view straight between compound eyes and ocelli; clypeus elongate, extending well below lower tangent of compound eyes by below about 50% clypeal length; body uniformly with yellowish-orange to reddish setae; male gonostylus with the dorsal process long, slender, acutely rounded to nearly pointed apically with long setal tuft, and the ventral process lamellate, concave on apical margin, and with short setae on mesal margin ( Fig. 12F, G )........................................ ................................... Habropoda sutepensis Cockerell, 1929

8. Mesosoma dorsally without broad black setal band medio-horizontally between tegulae; labrum with small emargination medio-apically ( Fig. 7B , 17B ); terga III–IV with thin, linear setal bands apically; male gonostylus with the dorsal process expanded apically and the ventral process with obovate-shaped or plate-shaped ........................................................................9

– Mesosoma with pale yellow-orange setae except broad black setal band medio-horizontally between tegulae; labrum with broad, V-shaped emargination medio-apically ( Fig. 3B ); male gonostylus with the dorsal process long, slender, narrowly rounded apically with some relatively long setae and the ventral process narrow truncated, spatular, with short setae along mesal margin and patch of gonotrichia on ventral surface toward mesal margin ( Fig. 4F, G ) ........................................................ ..................................... Habropoda mimetica Cockerell, 1927

9. Clypeus strongly convex ( Fig. 7A ); terga II–V with pale orange-yellow, thick setal bands apically ( Fig. 7E ); male gonostylus with the dorsal process long, expanded gradually from base to apex, round apically with long setal tuft, and the ventral process obovate-shape, with dense setae ( Fig. 8F, G )............. ..................................... s inensis complex (refer to key above)

– Clypeus gently convex ( Fig. 17A ); terga II–V with linear setal bands apically, terga II–III with pale ochraceous-orange intermixed some black setal bands apically, terga IV–V with black setal bands apically ( Fig. 17E ); male gonostylus with the dorsal process relatively slender, apically little expanded with a setal tuft, and the ventral process plate-shaped, apical margin nearly straight with abundant setae on mesal corner ( Fig. 18F, G )............. Habropoda tumidifrons Lieftinck, 1974

Figures

Fig. 2. A–G, Habropoda mimetica disconota Lieftinck, 1974, new status, female; A, head, frontal view; B, labrum, frontal view; C, left antenna; D, Head and mesosoma, dorsal view; E, left wing; F, metasoma, dorsal view; G, pygidial plate, dorsal view. Scale bars = 1.0 mm (A, C–F), 0.5 mm (B, G).

Fig. 6. A–G, Habropoda pierwolae, new species, female; A, head, frontal view; B, labrum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, left wing; F, metasoma, dorsal view; G, pygidial plate, dorsal view. Scale bars = 1.0 mm (A, C–F), 0.5 mm (B, G).

Fig. 14. A–F, Habropoda tainanicola vietnamica, new subspecies, female; A, head, frontal view; B, labrum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, left wing; F, metasomal terga III–VI and pygidial plate, dorsal view. Scale bars = 1.0 mm (A, C–F), 0.5 mm (B).

Fig. 16. A–G, Habropoda tumidifrons Lieftinck, 1974, female; A, head, frontal view; B, labrum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, left wing; F, metasoma, dorsal view; G, pygidial plate, dorsal view. Scale bars = 1.0 mm (A, C–F), 0.5 mm (B, G).

Fig. 10. A–G, Habropoda sutepensis Cockerell, 1929, female; A, head, frontal view; B, labrum, dorsal view; C, left antenna; D, head and mesosoma, dorsal view; E, left wing; F, metasoma, dorsal view; G, pygidial plate, dorsal view. Scale bars = 1.0 mm (A, C–F), 0.5 mm (B, G).

Fig. 9. A–D, Habropoda sutepensis Cockerell, 1929, female and male; A, lateral habitus, female; B, dorsal habitus, female; C, lateral habitus, male; D, dorsal habitus, male. Scale bars = 1.0 mm.

Fig. 13. A–B, Habropoda tainanicola vietnamica, new subspecies, female; A, lateral habitus; B, dorsal habitus. Scale bars = 1.0 mm.

Fig. 3. A–F, Habropoda mimetica disconota Lieftinck, 1974, new status, male; A, head, frontal view; B, labum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, metasoma, dorsal view; F, metasomal tegra V–VII, dorsal view. Scale bars = 1.0 mm (A–E), 0.5 mm (F).

Fig. 7. A–F, Habropoda pierwolae, new species, male; A, head, frontal view; B, labrum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, metasoma, dorsal view; F, metasomal terga VI–VII, dorsal view. Scale bars = 1.0 mm (A, C–E), 0.5 mm (B, F).

Fig. 17. A–E, Habropoda tumidifrons Lieftinck, 1974, male; A, head, frontal view; B, labrum and mandible, frontal view; C, left antenna; D, head and mesosoma, dorsal view; E, metasoma, dorsal view; F, metasomal terga V–VII, dorsal view. Scale bars = 1.0 mm (A, C–E), 0.5 mm (B, F).

Fig. 12. A–G, Habropoda sutepensis Cockerell, 1929, male; A, metasomal sternum IV; B, metasomal sternum V; C, metasomal sternum VI; D, metasomal sternum VII; E, metasomal sternum VIII; F, genitalia, dorsal view; G, genitalia, ventral view. Scale bars = 1.0 mm (A, B), 0.5 mm (C–G).

Fig. 4. A–G, Habropoda mimetica disconota Lieftinck, 1974, new status, male; A, metasomal sternum IV; B, metasomal sternum V; C, metasomal sternum VI; D, metasomal sternum VII; E, metasomal sternum VII; F, genitalia, dorsal view; G, genitalia, ventral view. Scale bars = 1.0 mm (A, B), 0.5 mm (C–G).

Fig. 8. A–G, Habropoda pierwolae, new species, male; A, metasomal sternum IV; B, metasomal sternum V; C, metasomal sternum VI; D, metasomal sternum VII; E, metasomal sternum VIII; F, genitalia, dorsal view; G, genitalia, ventral view. Scale bars = 1.0 mm (A, B), 0.5 mm (C–G).

Fig. 18. A–G, Habropoda tumidifrons Lieftinck, 1974, male; A, metasomal sternum IV; B, metasomal sternum V; C, metasomal sternum VI; D, metasomal sternum VII; E, metasomal sternum VIII; F, genitalia, dorsal view; G, genitalia, ventral view. Scale bars = 1.0 mm (A, B), 0.5 mm (C–G).