Cryptocephalus (s. str.) wenquanensis Duan, Wang & Zhou, 2025

Duan, Wen-Yuan, Wang, Feng-Yan & Zhou, Hong-Zhang, 2025, Four new species and three new country records for the Cryptocephalus trifasciatus group (Coleoptera: Chrysomelidae: Cryptocephalinae) from China, Zootaxa 5653 (4), pp. 535-552 : 542-544

3. Cryptocephalus (s. str.) wenquanensis Duan, Wang & Zhou sp. nov.

(Figs 3-1; 3-2)

Type locality. China: Yunnan Province: An’ning, Wenquan .

Type material examined. Holotype: male, CHINA: Yunnan Province: An’ning, Wenquan , 31. III. 1982, coll. Subai Liao ( IZ-CAS) . Paratypes: Yunnan Province: 1 male, 1 female, An’ning, Wenquan forestry college, 27. III. 1982, coll. Shengqiao Jiang ( IZ-CAS) ; 2 males, 1 female, An’ning, Wenquan Forestry College , 28. III. 1982, coll. Shengqiao Jiang ( IZ-CAS) ; 1 male, Dali , 30. V. 1955, coll. B. Popov ( IZ-CAS).

Measurements. BL = 3.33 mm, BW = 1.86 mm, HL = 0.96 mm, HW = 1.00 mm, PL = 1.03 mm, PW = 1.75 mm, EL = 2.44 mm, AL = 1.18 mm, AW = 0.36 mm, SL = 0.60 mm.

Description. Body (Figs. 3-1A–B) slightly small. Head largely yellowish brown, vertex with a narrow reddish brown vertical stripe; mandibles darkish brown; antennae yellowish brown on first three segments, 4 th darkish brown, black on terminal six. Pronotum pitchy brown, basal margin black, disc with 6 black markings, two of them in middle region bigger than the other four in lateral region. Scutellum yellowish brown, anterior margin black. Elytron yellowish brown, basal margin and upper half of lateral margin back. Ventral surface of body largely yellowish brown, lateral region of metasternum and metepisternum tinged with black; legs yellowish brown, dorsal view of femora and tibiae black, tarsi black.

Head more than one-half as broad as prothorax, nearly round in frontal outline, surface uneven, frons and vertex with fine punctures. Eyes emarginate below middle, superior eye-lobes separated slightly wider than antennal insertions. Clypeus smooth, without punctures, anterior margin concave and with pubescence. Antennae of males long and broad, reaching 1/2 region of elytra; 1 st segment thick, clubbed, 2 nd spherical, 1/3 as long as 1 st; 3 rd –4 th slender, 3 rd 1.5 times as long as 2 nd, 4 th longer than 3 rd and shorter than 5 th, from 5 th segment on somewhat equal in length, broadened and flatted.

Pronotum (Figs. 3-1A–B) convex, nearly 0.58 time as long as broad, trapezoidal in dorsal view; anterior margin nearly straight in anterodorsal view; lateral margin slightly wide, in dorsal view 2/3 of basal region can be seen; basal margin weakly sinuate, obtuse and truncate in middle; disc evenly convex, without any punctures. Scutellum triangular, wider than length, anterior margin concave, middle part of lateral margins constricted, looping upward apically, smooth and without any punctures.

Elytron (Figs. 3-1A–B) about 2.6 times as long as broad, humeri weakly prominent, glabrous, rounded-truncate apically. Disc of each with eleven somewhat oblique and irregular rows of densely deep punctures, each puncture row with groove; interspaces without any punctures.

Ventral surfaces of body with rather densely fine punctures and shortly pale pubescence. Prosternum square, surface uneven, middle part of anterior margin with a small protrusion, posterior margin nearly straight. Mesosternum broad and small, central part of basal margin concave. Pygidium with densely fine punctures and short pubescence, posterior margin of male rounded arcuate.

Aedeagus (Figs. 3-1D–F; 3-2A–C) elongate, sword-shaped, about 3.3 times as long as wide. Apex of median lobe triangular, strongly narrower than middle, sharp at apex, weakly curved in lateral view; with several pubescence on each side of apex, without punctures. Median orifice with middle sclerite bending inwards below surface. Inner sac rather simple. Tegmen Y-shaped, weakly sclerotized.

Female. Body more robust than male; antennae slightly shorter than male, reaching humeral region of elytra, posterior margin of pygidium more broadened and rounded. Spermatheca (Figs. 3-1C; 3-2D) hook-shaped, acute-angled bending near 1/2 from apex, very acute at the apex; duct weakly sclerotized, short and broad, irregularly coiling. Rectal sclerites moderately sclerotized, connected between two rectangular sclerites on ventral side.

Distribution. China (Yunnan).

Diagnosis. This new species is well distinguished from all its congeners by the pronotum with six black markings and with the grooved puncture rows on elytra.

Etymology. The specific epithet is derived from the name of the type locality, Wenquan, Yunnan Province, China.