Paragnia tiani Huang, 2020

Huang, Gui-Qiang, Li, Song & Zhang, Gui-Mei, 2020, A review of the genus Paragnia Gahan, 1893 (Coleoptera: Cerambycidae: Lamiinae: Lamiini), Zootaxa 4778 (1), pp. 159-170 : 166-168

Paragnia tiani Huang sp. nov. moeḦĦK+

Figures 27–44

Description. Male. Body length: 12.0 mm, humeral width: 4.5–5.0 mm (2 individuals); holotype ( Figs 27–43 ), body length: 12.0 mm, humeral width: 5.0 mm. Body reddish brown, antennomeres V–X (except for apex) and antennomere XI yellowish brown; antennomeres III–X dark brown apically; prothorax (except for prosternum), most parts of elytra, sides of meso- and metaventrite and urosternite I (except for base) black; urosternites IV–V yellowish brown ( Figs 27–29 ).

Frons sparsely covered with short grayish-white and black setae ( Fig. 30 ). Scape, pedicel and middle of antennomere XI sparsely covered with short black setae; apical half of antennomere IV with moderately dense short black setae, antennomeres IV–IX with several long black setae ventrally, scape, pedicel and base of antennomere III with sparse short grayish-white setae, basal half of antennomere IV with moderately dense short light-yellow setae ( Figs 27–29 ). Prothorax with a yellow setal band at laterobasal half ( Figs 27, 29 ). Each elytron with a longitudinal yellow setal band on the basal 1/3 close to the suture and an irregular yellow setal spot on inner margin of apex ( Fig. 27 ). Prosternum and mesoventrite sparsely covered with short grayish-white setae ( Fig. 28 ).

Antennae 1.4 times as long as body, antennal formula (ratio) based on length of antennomere III: scape= 0.60, pedicel= 0.10, IV= 0.87, V= 0.53, VI= 0.47, VII= 0.40, VIII= 0.35, IX= 0.32, X= 0.28, XI= 0.38. Inner side of antennomeres V–IX slightly projected near base ( Figs 27–28 ). Elytra 2 times as long as wide at base. MP 3+4 and MP 4 veins of hind wing far from each other ( Fig. 32 ). Margin of urosternite V slightly notched medially ( Fig. 28 ).

Male terminalia. Tergite VIII ( Figs 33–34 ) sub-semicircle, with a feebly triangular projection at apical middle. Stem of spiculum gastrale more than 2 times as long as branches ( Figs 35–37 ), curved near basal 1/ 3 in lateral view ( Fig. 36 ). Tegmen ( Figs 38–40 ) shorter than penis, dorsum of parameres sparsely covered with short fine brown setae and several long thick brown setae near base and apex, phallobase expanded near the apical 1/3 and gradually tapered to base, then curved near the basal 1/ 3 in lateral view ( Fig. 39 ), tegminal struts distinctly expanded towards inside near apex ( Figs 38, 40 ). Venter of dorsal struts of penis distinctly constricted near apical 1/ 4 in lateral view ( Fig. 42 ).

Female. Unknown.

Diagnosis. Males of this new species can be distinguished from Paragnia fulvomaculata by the prothorax with a yellow setal band on the laterobasal half (without yellow setal band in P. fulvomaculata ); the long yellow setal bands on basal middle and basal margin of elytra (short in P. fulvomaculata ); each elytron with a yellow setal band on the basal 1/3 close to suture (with several yellow setal spots in P. fulvomaculata ), with a yellow setal spot on inner margin of apex (with sparse short light yellow hairs in P. fulvomaculata ); antennae short (long in P. fulvomaculata ), antennomeres III–IV thicker (thin in P. fulvomaculata ); CuA 2 vein of hind wing short (long in P. fulvomaculata ), the distance between MP 3+4 and MP 4 veins long (short in P. fulvomaculata ), sr vein missing (with sr vein in P. fulvomaculata ); ventrites slightly notched at apical middle (sub-truncated in P. fulvomaculata ); tergite VIII with a feebly triangular projection at the apical middle (truncated in P. fulvomaculata ); stem of spiculum gastrale narrow (wide in P. fulvomaculata ), membrane connecting both parameres wide (narrow in P. fulvomaculata ); tegminal struts distinctly expanded towards inside near apex (not expanded in P. fulvomaculata ); venter of dorsal struts of penis distinctly constricted near apical 1/ 4 in lateral view (not constricted in P. fulvomaculata ).

Type material. Holotype: male ( LPSNU), VIETNAM. Dak Lak, IV.2019, local collector leg . Paratype: 1 male ( LPSNU), same data as the holotype, but III.2018 .

Etymology. This new species is dedicated to Prof. Ying-Zhou Tian (mLJNJ), former president of Liupanshui Normal University, for his generous supports to this study.

Distribution. Only known from type locality of Dak Lak province, Vietnam.

Figures

FIGURES 27–29. Paragnia tiani sp. nov., holotype, male. Habitus: 27. dorsal view; 28. ventral view; 29. lateral view. Scale bar: 5 mm.

FIGURES 30–32. Paragnia tiani sp. nov., holotype, male. 30. Head, frontal view; 31. prothorax, dorsal view; 32. right hind wing, dorsal view (A: anal, Cu: cubital, MP: medial posterior, MS: medial spur, r: radial). Scale bars: 2 mm.

FIGURES 33–43. Male terminalia of Paragnia tiani sp. nov. holotype. 33–34. Tergite VIII and sternite VIII, 35–37. spiculum gastrale, 38–40. tegmen, 41–43. penis; 33, 35, 38, 41. dorsal view; 36, 39, 42. lateral view; 34, 37, 40, 43. ventral view. Scale bar: 0.5 mm.

FIGURE 44. Geographical distribution map of Paragnia species.