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

Duan, Wen-Yuan, Wang, Feng-Yan & Zhou, Hong-Zhang, 2025, Two new species and one new country record for the Cryptocephalus parvulus group (Coleoptera: Chrysomelidae: Cryptocephalinae) from China, Zootaxa 5691 (2), pp. 341-352 : 342-347

1. Cryptocephalus ( s. str.) longwangshanus Duan, Wang & Zhou , sp. nov.

( Figs 1 ; 3 ; 4 )

Type locality. China: Zhejiang Province: An’ji, Longwangshan .

Type material examined. Holotype: male, CHINA: Zhejiang Province: An’ji, Longwangshan , 16. VII. 1995, coll. Hong Wu ( IZ-CAS) . Paratypes: CHINA: Zhejiang: 1 female, Tianmushan , 24. VIII. 1936, coll. unknown ( IZ-CAS) ; Hunan Province: 1 female, Yanling Country, Taoyuandong Nature Reserve , 5. VII. 2008, coll. Ganyan Yang ( IZ-CAS) ; Guangxi Province: 1 female, Tianlin Langping Brigade , 22. VIII. 1980, coll. Yunsheng Lu ( IZ-CAS) .

Measurements. BL = 3.69 mm, BW = 2.19 mm, HL = 1.15 mm, HW = 1.17 mm, PL = 1.19 mm, PW = 2.07 mm, EL = 2.52 mm, AL = 0.94 mm, AW = 0.41 mm, SL = 0.65 mm.

Description. Body ( Figs. 3 , A–B) relatively small. Head mostly black, clypeus reddish brown; labrum and labial palpus yellowish brown; mandibles reddish brown, apex black; antennae yellowish brown on the first four segments, black on the terminal seven. Pronotum and scutellum entirely black. Elytron black, middle part with a broad transverse band of yellow color which occupies 1/3 of whole elytron. Ventral surface of body largely black, prosternum, prosternal episternum and epimeron reddish brown; legs dark reddish brown.

Head ( Figs. 3 , A–B) more than one-half as broad as prothorax, nearly round in frontal outline, surface uneven, frons and vertex with dense punctures. Eyes emarginate below middle, superior eye-lobes separated and slightly narrower than antennal insertions. Clypeus coarsely punctured, apical region wrinkled, anterior margin concave. Antennae of males long and broad, reaching posteriorly 2/3 of elytra; 1 st segment thick, clubbed, 2 nd spherical, 2/5 as long as 1 st, 3 rd– 4 th slender, 4 th longer than 3 rd and shorter than 5 th, from 5 th segment on somewhat equal in length, 5 th –8 th broadened and flatted.

Pronotum ( Figs. 1, 1A–1B ; 3 , A–B) convex, nearly 0.57 time as long as broad, trapezoidal in dorsal view; anterior margin nearly straight in anterodorsal view; basal margin weakly sinuate, obtuse and truncate in middle; disc evenly convex, with dense small but deep punctures. Scutellum triangular, longer than broad, sloping upward apically, smooth and without punctures.

Elytron ( Figs. 3 , A–B) about 2.4 times as long as broad, humeri weakly prominent, glabrous, roundly truncate apically. Disc of each with eleven rows of dense and deep punctures, somewhat oblique arranged and irregular, 5 rows near suture and 1 row near lateral margin more regular than others; interspaces without any punctures.

Ventral surfaces of body with rather dense but fine punctures and short silver pubescence. Prosternum square, surface uneven, length about 1.5 times of broad, anterior and posterior margin nearly straight. Mesosternum broad and small, square. The middle part of metasternum wrinkled, lateral parts with dense pubescence. Pygidium with dense but fine punctures and short pubescence, posterior margin of male roundly arcuate.

Aedeagus ( Figs. 3 , D–F; 4 , A–C) stout, clubbed, about 2.3 times as long as wide. Apex of median lobe weakly arcuate, slightly broader than middle, nearly straight at apex, weakly curved in lateral view; with several short pubescence on each side of apex, without punctures. Median orifice with middle sclerite bending inwards below surface. Inner sac rather slender, anchor shaped. Tegmen Y-shaped, moderately sclerotized.

Female. Body more robust than male; antennae slightly shorter than male, reaching middle part of elytra; last segment of abdomen with a round and deep fovea; posterior margin of pygidium more broadened and rounded. Spermatheca ( Figs. 3 , C; 4 , D) hook-shaped, acute-angled bending near to 1/2 from apex, very acute at the apex; duct slightly sclerotized, weakly coiling. Rectal sclerites strongly sclerotized, not connected between two rectangular sclerites on ventral side.

Distribution. China ( Zhejiang, Hunan, Guangxi).

Diagnosis. The new species has special color patterns within this species group. For other species with similar color patterns but not included in this species group, such as C. ( s. str.) dimidiatipennis Jacoby, 1895 and C. ( s. str.) nigroflavus Lopatin, 2004a , it can be distinguished by the pronotal punctures and the yellow band in the middle part of elytra. Moreover, the new species has stouter aedeagus in male and slenderer spermathecal duct in female.

Etymology. The specific epithet is derived from the Chinese name (Pinyin) of the type locality, Longwangshan.

Figures

FIGURE 1. Cryptocephalus (s. str.) parvulus species group pronotum: 1A, 1B. C. longwangshanus Duan, Wang & Zhou, sp. nov.; 2A, 2B. C.(s. str.) yangae Duan, Wang & Zhou, sp. nov.; 3A, 3B. C. (s. str.) guttifer Suffrian, 1854; 4A, 4B. C. (s. str.) limbatipennis Jacoby, 1885.

FIGURE 3. Cryptocephalus (s. str.) longwangshanus Duan, Wang & Zhou, sp. nov.: A. habitus; B. lateral view of habitus; C. spermatheca; D. lateral view of aedeagus; E. ventral view of aedeagus; F. dorsal view of aedeagus. (Scale bars: A–B = 0.5 mm, C–E = 0.2 mm).

FIGURE 4. Cryptocephalus (s. str.) longwangshanus Duan, Wang & Zhou, sp. nov.: A. dorsal view of aedeagus; B. ventral view of aedeagus; C. lateral view of aedeagus; D. spermatheca. (Scale bars: A–D = 0.2 mm).