Dedalopterus xuhaoi, Wang & -, 2024

Wang, Fa-Lei & -, P. R .., 2024, A new species of the genus Dedalopterus Sabatinelli Pontuale, 1998 from China (Coleoptera, Scarabaeidae, Melolonthinae), Faunitaxys (Deerfield Beach, Fla.) 12 (18), pp. 1-5 : 1-2

Dedalopterus xuhaoi sp. n. (″Kḛ®±AE)

( Fig. 4-6, 10-12 & 19-22)

ZooBank:https://zoobank.org/ E5F48082-676E-48FC-B6EE-4E88A6EE4334

Holotype, ♂ ( MYNU): CHINA: Yunnan / Baoshan, Longling County / Xiangda Town, alt. 1700 m / V-VI.2021, local leg. // HOLOTYPE // Dedalopterus xuhaoi / F.-L. Wang det. 2024.

Description of holotype ( Fig. 4-6, 10-12 & 19-22)

General appearance. – Body length: 20.1 mm, width: 9.1 mm.

Body elongate ovoid, moderately convex in profile ( Fig. 6).

Color. –Whole body color brown; head, antenna, posterior margin of pronotum, scutellum, sutural costa, apex of tibias, joint of legs and claws darker. Body surface with white or grayish yellow oval, imbricating scales and narrow, acicular setae ( Fig. 4).

Head ( Fig. 10). – Clypeus wide semicircular, 2.67 times as wide as long, anterior margin weakly reflexed; surface with spare, large punctures, with dense grayish yellow oval, imbricating scales. Fronto-clypeal suture complete, slightly concave-forward. Compound eyes comparatively large, interocular distance 0.62 times as wide as the maximum transverse width of head. Frons with an inverted triangular depression from fronto-clypeal suture to disc, surface rather sparely

Denis Keith ( France) - http://zoobank.org/ C922B63D-331E-44BF-B386-9A70AE05CA28

punctate, also with grayish yellow oval, imbricating scales, denser on the middle longitudinal area, rather dense around eyes, on the anterior half grayish yellow, on the posterior half white. Antenna with 10 antennomeres, antennal club composed of 3 antennomeres, 2.8 times longer than antennomeres 1–7 combined. The last joint of maxillar palpi expanded.

Pronotum ( Fig. 11). – Wide trapezoid, margins without marginal line. Lateral margin convergent in the middle, slightly flat, anterior half straight, posterior half incurved. Anterior margin deeply depressed before anterior angles. Anterior angles widely rounded, slightly flat; posterior angles acute, slightly prolonged, apex sharp. Surface sparely, shallowly punctate; with dense white oval, imbricating scales on the middle longitudinal area; with white oval, imbricating scales on posterior margin between scutellum and posterior angle, also with same scales on the depressed area of the anterior margin near the anterior angles; with dense, overlapped smaller, narrow, acicular yellow scales on the area around posterior angles; disc sparely with grayish yellow oval, imbricating scales; sparely with yellow setae on the anterior area of side.

Scutellum. – Apex corner rounded, with several white or yellow narrow scales; disc sparely with grayish yellow oval, imbricating scales.

Elytra ( Fig. 4). – With five principal costae and five wide principal intervals, principal costae II and III composed of three narrow secondary costae and two narrow secondary intervals. Vestiture of principal interval I-III composed of dense white oval, imbricating scales, principal interval VI sparely with smaller yellow oval, imbricating scales, principal interval V densely with longer yellow setae, and yellow oval, imbricating scales near costa 5 ( Fig. 14). White scales on principal interval I reaching the anterior margin and posterior angles, on principal interval II reaching the anterior margin but truncated before the lateral margin, and on principal interval III starting from humeral umbones and truncated before the lateral margin. Two narrow secondary intervals on principal costae II and III with white or yellow oval, imbricating scales.

Pygidium ( Fig. 12). – Weakly convex in profile, surface with dense grayish yellow acicular setae.

Abdominal ventrites ( Fig. 5). – With moderately dense grayish yellow oval, imbricating scales, sparer on the middle.

Legs. – Protibia tridentate, terminal tooth slightly prolonged, basal tooth extremely weak; apex of mesotibia and metatibia slightly widened, surface with spare grayish yellow oval, imbricating scales. Tarsi slender and long.

Genitalia. – As in Fig. 19-22.

Differential diagnosis. – Depending on the shape of male genitalia ( Bunalski, 2001; Pham et al., 2024; Sabatinelli & Pontuale, 1998; Zhang, 1990, 2002; Zidek & Krajcik, 2007), Dedalopterus xuhaoi sp. n. (type-locality: Xiangda town) is closely similar to D. intermedius (type-locality: Caojian town, about 200 km from Xiangda county).

We can distinguish D. xuhaoi sp. n. from D. intermedius by:

1 - clypeus andfronswithlarge,oval,imbricatingscales, the last joint of maxillar palpi expanded ( Fig. 2, 5, 7 & 10; clypeus and frons with narrow, acicular setae,the last joint of maxillar palpi elongate in D.intermedius );

2 - disc of pronotum with large, oval, imbricating scales ( Fig. 8 & 11; disc of pronotum with narrow, acicular setae in D. intermedius );

3 - apex of pygidium broadly rounded, surface with dense scales ( Fig.9&12; apex of pygidium thinly rounded, surface with moderately dense setae in D. intermedius );

4 - scutellum withoval, imbricating scales ( Fig. 1 & 4;with narrow, acicular setae in D. intermedius );

5 - principal interval V of elytra both with white oval, imbricating scales and yellow narrow, acicular setae ( Fig. 13 & 14; only with yellow narrow, acicular setae in D. intermedius );

6 - basal part of left parameres narrower, apex part becoming widened distinctly ( Fig. 17 & 21; left parameres almost parallel, only slightly widened at apex in D. intermedius ).

Etymology. – The new species is named after my friend Dr. Hao Xu (MYNU), who provided valuable taxonomic articles for this study.

Distribution. – Xiangda town, Longling county, western Yunnan, China ( Fig. 24).