Cylindroeme vietnamica Vives, 2019

Wang, Yingqi, Xie, Guanglin & Wang, Wenkai, 2022, A revision of the genus Cylindroeme Vives (Coleoptera, Cerambycidae, Cerambycinae), ZooKeys 1082, pp. 127-134 : 127

Cylindroeme vietnamica Vives, 2019

扁柱胸天牛 Figs 1-2 , 9 , 12

Cylindroeme vietnamica Vives, 2019: 1-2. Type locality: Lung Cu, Ha Giang, Vietnam. Type depository: coll. E. Vives, Spain.

Type material examined.

Holotype (male, Figs 1-2 , 9 ) and one paratype (female, Fig. 12 ), only examined by photos (provided by Vives).

Redescription.

(modified according to the original description and the quality photographs). Male, body length 13 mm, width 2.1 mm (holotype). Body elongate, mostly chestnut-brown, clothed with golden pubescence. Head and pronotum blackish brown, antennae and tarsi brown. Elytra clothed with two types of golden pubescence, one very short and dense, the other relatively long, sparse and arched.

Head parallel-sided behind the eyes; frons trapeziform, with a longitudinal median sulcus; eyes large, strongly emarginate at inner edge; genae rather short. Antennae thin, scape pyriform, strongly punctate, antennomere III clearly longer than antennomere IV, the following segments subequal in length. Pronotum longer than broad, broadest near basal fourth; disc slightly flattened, middle of apical margin equipped with an inverted triangle notch with raised edge, then followed by an inverted V-shaped ridge nearly reaching to posterior edge. Scutellum ligulate, with raised edge. Elytra elongate, about 5.0 times as long as humeral width; humeri rather rounded, protruding forward; sides subparallel, slightly converged towards apex; apex rounded; disc slightly flattened, finely punctate, with a short longitudinal basal rib at the middle of each elytron. Prosternum smooth and shiny on anterior quarter, finely dotted on posterior half; mesosternum transverse, metasternum slightly longer than wide, with a longitudinal median indentation at posterior half, prosternal intercoxal process nearly absent. Abdomen cylindrical, slightly wider at apical half, with six visible ventrites, first ventrite longer than wide, the others shorter and ventrites I-IV with a smooth and shiny posterior border. Legs short, femora strongly widened, laterally flattened, first metatarsomere about 2.0 times as long as next two combined, claws divaricate.

Distribution.

Vietnam (Ha Giang province).

Figures

Figures 1 - 8. Habitus of Cylindroeme spp. 1 - 2 Cylindroeme vietnamica Vives 3 - 8 Cylindroeme shii sp. nov. 1 - 2, 5 - 6 holotypes 3 - 4, 7 - 8 paratypes 1 - 6 male 7 - 8 female.

Figures 9 - 21. Habitus of Cylindroeme spp. 9 - 13 head and pronotum 14 - 21 male genitalia 9, 12 Cylindroeme vietnamica Vives 10 - 11, 13 - 21 Cylindroeme shii sp. nov. 9 - 10 holotypes 11 - 13 paratypes 9 - 11 male 12 - 13 female 14 - 15 abdominal segments VIII-IX 16 - 18 tegmen 19 - 21 median lobe 14, 16, 20 dorsal view 15, 17, 21 ventral view 18 - 19 lateral view Scale: 0.5 mm.