Diapromorpha flavolabiata Zhou, Duan & Wang, 2025

Diapromorpha flavolabiata Zhou, Duan & Wang , sp. nov.

( Figs 1 View FIGURE 1 , 2 View FIGURE 2 )

Type locality. China: Yunnan Province: Xishuangbanna, Xiaomengyang .

Type material examined. Holotype: male, CHINA: Yunnan Province: Xishuangbanna, Xiaomengyang , 24. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) . Paratypes: CHINA: Yunnan Province: 1 male, 1 female, Xishuangbanna , Xiaomengyang , 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 14. VI. 1957, coll. Shuyong Wang ( IZ-CAS) ; 2 males, Xishuangbanna, Xiaomengyang , 15. VI. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 21. VI. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 23. VI. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 6. VII. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 male, 3 females, Xishuangbanna, Xiaomengyang , 7. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 3 females, Xishuangbanna, Xiaomengyang , 8. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 9. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 2 males, 1 female, Xishuangbanna, Xiaomengyang , 11. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 12. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 17. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 7. VIII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 17. VIII. 1957, coll. Shuyong Wang ( IZ-CAS) ; 2 females, Xishuangbanna, Xiaomengyang , 7. IX. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 9. X. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 11. X. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 18. VIII. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 male, 2 females, Xishuangbanna, Xiaomengyang , 19. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 20. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 22. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Xiaomengyang , 25. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 26. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 28. VIII. 1958, coll. unknown ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 28.VIII.1958,coll. Xuwu Meng ( IZ-CAS) ; 1male, Xishuangbanna, Xiaomengyang , 29. VIII. 1958, coll. Leyi Zheng ( IZ-CAS) ; 2 females, Xishuangbanna, Xiaomengyang , 29. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 30. VIII. 1958, coll. Xuwu Meng ( IZ-CAS) ; 2 females, Xishuangbanna, Xiaomengyang , 30. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Xiaomengyang , 2. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 2. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Xiaomengyang , 3. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 3. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 4. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 6. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 7. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 8. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 male, Xishuangbanna, Xiaomengyang , 9. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Xiaomengyang , 9. IX. 1958, coll. Xuwu Meng ( IZ-CAS) ; 2 females, Xishuangbanna, Xiaomengyang , 9. IX. 1958, coll. unknown ( IZ-CAS) ; 2 males, 3females, Xishuangbanna, Xiaomengyang , 10.IX.1958, coll. Yiran Zhang ( IZ-CAS) ; 2 males, Xishuangbanna, Xiaomengyang , 13. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Xiaomengyang , 20. X. 1958, coll. Shuyong Wang ( IZ-CAS) ; 9 males, 5 females, Xishuangbanna, Mengla , 9. IX. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Mengla , 11. XI. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 female, Xishuangbanna, Mengla , 23. V. 1959, coll. Zhenfu Li ( IZ-CAS) ; 1 male, Xishuangbanna, Mengla , 27. V. 1959, coll. Fuji Pu ( IZ-CAS) ; 1 female, Xishuangbanna, Mengla , 5. VI. 1959, coll. Zhenfu Li ( IZ-CAS) ; 1 female, Xishuangbanna, Mengla , 7. VII. 1959, coll. Zhenfu Li ( IZ-CAS) ; 1 female, Xishuangbanna, Mengla , 15. VIII. 1959, coll. Facai Zhang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Meng’a , 30. VII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 female, Xishuangbanna, Meng’a , 3. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 2 males, 1 female, Xishuangbanna, Meng’a , 4. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, Xishuangbanna, Meng’a , 4.VIII.1958, coll. Shuyong Wang ( IZ-CAS) ; 3males, Xishuangbanna, Meng’a , 6. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Meng’a , 7. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 female, Xishuangbanna, Meng’a , 8. VIII. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 female, Xishuangbanna, Meng’a , 9. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 2 males, 1 female, Xishuangbanna, Meng’a , 10. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 3 males, 2 females, Xishuangbanna, Meng’a , 11. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 2 females, Xishuangbanna, Meng’a , 11. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 2 males, 3 females, Xishuangbanna, Meng’a , 12. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 male, Xishuangbanna, Meng’a , 16. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Meng’a , 17. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, Xishuangbanna, Meng’a , 19. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Meng’a , 20. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Meng’a , 30. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1female, Xishuangbanna, Menghun , 28.V.1958, coll. Xuwu Meng ( IZ-CAS) ; 1female, Xishuangbanna, Menghun , 31. V. 1958, coll. Chunpei Hong ( IZ-CAS) ; 1 male, Xishuangbanna, Menghun , 1. VI. 1958, coll. Chunpei Hong ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Menghun , 2. VI. 1958, coll. unknown ( IZ-CAS) ; 1 male, Xishuangbanna, Menghun , 6. VI. 1958, coll. unknown ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Menghun , 9. VI. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Menghun , 9. VI. 1958, coll. Chunpei Hong ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Menghun , 14. VI. 1958, coll. Xuwu Meng ( IZ-CAS) ; 1 male, Xishuangbanna, Menghun, Mengban , 9. VI. 1958, coll. Chunpei Hong ( IZ-CAS) ; 2 females, Xishuangbanna, Menghai , 10. VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 male, 1 female, Xishuangbanna, Menghai , 10. VIII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Menghai , 13. VIII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Menghai , 15. VII. 1958, coll. Fuji Pu ( IZ-CAS) ; 2 males, 2 females, Xishuangbanna, Menghai , 16. VII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Menghai , 22. VII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, 2 females, Xishuangbanna, Menghai , 24. VII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 2 male, 1 females, Xishuangbanna, Menghai , 24. VII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, Xishuangbanna, Mengzhe , 26. VI. 1958, coll. Fuji Pu ( IZ-CAS) ; 5 males, 5 females, Xishuangbanna, Mengzhe , 29. VIII. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 male, 2 females, Xishuangbanna, Mengzhe , 29. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, Xishuangbanna, Damenglong , 7. VII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Damenglong , 8. VII. 1958, coll. Leyi Zheng ( IZ-CAS) ; 1 male, Xishuangbanna, Damenglong , 13. VII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1male, Xishuangbanna, Damenglong , 16.VII.1958,coll. Yiran Zhang ( IZ-CAS) ; 1female, Xishuangbanna, Damenglong , 20. VIII. 1958, coll. Yiran Zhang ( IZ-CAS) ; 1 female, Xishuangbanna, Damenglong , 29. VIII. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 male, 3 females, Xishuangbanna, Yunjinghong , 3. VII. 1957, coll. unknown ( IZ-CAS) ; 1 female, Xishuangbanna, Yunjinghong , 3. VII. 1957, coll. Shuyong Wang ( IZ-CAS) ; 3 males, 2 females, Xishuangbanna, Yunjinghong , 22.VII. 1957, coll. Lingchao Zang ( IZ-CAS) ; 1 female, Xishuangbanna, Yunjinghong , 22. VII. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Kongmingshan , 21. IX. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Xishuangbanna, Yiwu , 26. X. 1958, coll. Fuji Pu ( IZ-CAS) ; 1 female, Xishuangbanna, Mengna , 29. VI. 1959, Facai Zhang ( IZ-CAS) ; 1 male, Yiwubanna, Menglun , 24. X. 1958, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Yiwubanna, Menglun , 28. X. 1958, coll. Xuwu Meng ( IZ-CAS) ; 2 females, Yiwubanna, Menglun , 25. VII. 1957, coll. Shuyong Wang ( IZ-CAS) ; 1 female, Yiwubanna, Menglun , 26. VII. 1959, coll. Facai Zhang ( IZ-CAS) ; 1 male, Kunming, Heilongtan , 18. IX. 1958, coll. Xuwu Meng ( IZ-CAS) .

Measurements. Body length males: 5.1–5.9 mm, females: 5.7–7.0 mm.

Description. Body ( Figs 1A, B View FIGURE 1 ) cylindrical, upper side glabrous. Head black, mandibles black, labrum, labium and maxilla yellowish brown, frontal clypeus between antennal insertions yellowish brown; four basal antennomeres yellowish brown, others blackish brown. Pronotum yellowish brown. Scutellum entirely or largely black. Elytra yellowish brown. Ventral side of body black, prosternal epimeron yellowish brown, legs largely black, tibia and tarsi yellowish brown.

Head small. Mandibles not robust; anterior margin of labrum slightly concave and truncates; length ratio of labial palpomeres: 0.5: 1.4: 1.4: 2.5; anterior margin of gena deeply concave; clypeus flat and glabrous, with dense and coarse punctures; between eyes with lightly yellow short hair; vertex convex and shining, with a longitudinally shallow groove and fine wrinkles. Antennae short, reaching the middle part of pronotum; 3 rd segment tiniest, glabrous.

Prothorax transverse, width 1.9 x of length, base much broader than apex. Posterior angles distinct. Disc convex and shining, with extremely fine punctures. Scutellum small and narrow, shining and without any punctures.

Elytron about 2.7 x as long as broad, humeri slightly prominent; lateral margins distinctly expanded ventrally and roundly lobe-formed at basal 1/4 of elytron; disc with dense and coarse punctures, partly shallower on apical slope, puncture interval is 2–4 x the puncture diameter.

Undersides and legs thickly clothed with long silvery pubescence, apex of pygidium arcuate. Legs robust.

Aedeagus ( Figs 1D–G View FIGURE 1 ; 2D–F View FIGURE 2 ) slender, about 3.9 x as long as wide; bent ventrally, apex sharp triangularly.

Female. Body and especially legs more robust than male. Spermatheca ( Figs 1C View FIGURE 1 ; 2G View FIGURE 2 ) hook-shaped, apex and base slightly swollen; duct slightly sclerotized, irregularly coiling. Rectal sclerites strongly sclerotized ( Figs 1H. I View FIGURE 1 ), ventral rectal sclerites large, clubbed; dorsal central sclerites nearly square; lateral sclerites large.

Distribution. China (Yunnan).

Diagnosis. This new species is similar to Diapromorpha pallens (Fabricius) , but can be distinguished from labrum, clypeus, tibia and tarsi yellowish brown, and aedeagus are totally different.

Etymology. The specific epithet is named from the combination words “ flav -” (yellowish brown) and “ labiata ” (labrum).