Anomala muongtensis Zhao & Pham, 2023

Anomala muongtensis Zhao & Pham View in CoL sp. nov.

( Fig. 6 -8, 12- 14)

ZooBank:http://zoobank.org/ 96EF9F9D-9D3F-4C39-8933-59ADD8B96957

Holotype ♂ ( MHNG), “ VIETNAM, Lai Chau Prov., Muong Te , 1700 m, VIII.2022, local collector leg.”

Description of the holotype male ( Fig. 6 - 8, 12 -14)

General appearance. – Body shape elongated ovoid, strongly convex. Generally reddish brown; head, pronotum, ventral thoracic surface and legs (except for protibial teeth and mesotibia) with strong greenish sheen, rather faint on other parts. Antennal club dark brown; setae yellowish brown, spiniform setae reddish brown.

Head. – Clypeus almost semicircular, anterior margin feebly reflexed; surface with very dense and coarse punctures, somewhat

FAUNITAXYS - ISSN (Print): 2269 - 6016 - ISSN (Online): 2970 - 4960

rugose, with dense, erect and short setae. Frontoclypeal suture distinct. Frons with very dense and coarse punctures, gradually finer posteriad, vertex with small punctures, setose as in clypeus. Antennal club almost equally as long as antennomeres 1–6 combined. Inner margin of eye with several moderately long and erect setae.

Pronotum. –Sides feebly arched and strongly convergent anteriad, both anterior and basal halves inconspicuously straight in lateral view. Anterior angle acute and protruding, posterior angle almost right angle. Basal marginal line obsolete, other marginal lines complete. Extensively bearing dense and small punctures, each puncture bearing an erect and short seta. Lateral margin with a few moderately long to long setae.

Scutellum . – Almost triangular, lateral margin arched. Glabrous, disc punctate as disc of pronotum.

Elytra . – Intervals weakly convex forming costae, subsutural interstices widest with two costae, other intervals each with one costa, almost equal in width; strial punctures very dense, ovate and not setose; costal punctures moderately dense, transverse but not coalescent, each bearing an erect and short seta. Humeral umbone and apical protuberances moderately prominent. Lateral carina distinct at basal four fifth. Epipleura with a row of moderately dense and short setae. Marginal membrane complete and broad.

Propygidium . – Surface with dense and transverse punctures, frequently coalescent. With a transverse row of sparse short setae proximally.

Pygidium . – Surface weakly tumid proximally. Surface with dense and transverse striolation encircling the greatest tumidity. Disc bearing sparse, short to moderately long setae, also with sparse and irregularly-distributed long setae proximally, and a transverse row of long setae at posterior margin.

Ventral thoracic surface. – Ventral prothoracic surface with dense and longitudinal striolation, sparsely bearing short setae. Ventral mesothoracic surface with very dense, transverse or oblique and frequently coalescent punctures, setose as the former. Ventral metathoracic surface with dense punctures, punctures on medial portions moderately dense and small, then gradually larger and dense laterad, all punctures becoming transversely semicircular and coalescent at lateral portions; densely covering long setae, setae on medial portions somewhat sparser and shorter.

Abdominal ventrites. – Ventrites 1-3 strongly carinate laterally, ventrite 4 weakly carinate laterally. Moderately dense and transverse punctures are predominant, ovate and small punctures interspersed near margins; only a minority of punctures each bearing a semierect and short seta, ventrites 2–5 each with a transverse but sparse row of moderately long setae, the row of ventrite 6 present at posterior margin.

Legs. – Protibia bidentate, both teeth distinct; apical tooth extending to level of base of protarsomere 3. Inner spur inserted shortly behind the level of the proximal tooth. Inner protarsal claw and outer mesotarsal claw split apically; lower branch of inner protarsal claw widely convex at lower margin basally, forming a deep notch internobasally, longer and distinctly wider than the sharp upper branch; lower branch of outer mesotarsal claw distinctly wider than upper branch, subequal in length. Each tarsomere 5 with a strong internomedial denticle, that of protarsomere 5 rounded. Outer metatarsal claw slightly longer than inner one. Mesofemoral surface with longitudinal rows of moderately long setae, two regular rows near dorsal margin, a third one behind middle and bearing spiniform setae, irregularly setose between the second and the third, a row at ventral edge. Metafemoral surface with three rows of setae, one at dorsal edge, second next to the preceding one, third one behind middle somewhat spiniform, with irregularly-distributed and short setae between the second and the third, ventral edge with a few fine setae.

Male genitalia. – As Fig. 12- 14. Parameres symmetric, bifid in profile, lower face finely setose; ventral plate straight.

Female. – Unknown.

Measurement. – Body length: 12.2 mm, greatest width: 6.5 mm.

Differentialdiagnosis. – Anomala muongtensis Zhao& Pham sp. nov. is closely related to A. barbellata Lin, 1996 ( Lin, 1996a) from Hainan Island. The latter species has apically truncated paramere with an extension stretching from its lower margin in profile. The new species also resembles A. thai Miyake, 1994 ( Miyake, 1994) from northeastern Thailand.The simple, non-bifid paramere of A. thai can be readily distinguished from A. muongtensis .

Etymology. – The specific name derives from its type locality, Mường Tè District in Lai Châu Province.

Distribution. – Vietnam: Lai Châu Province.