Rhodotritoma manipurica Arrow, 1925

Xu, Huixin, Pang, Jiaxin, Li, Jing & Cheng, Zhiqiang, 2022, A newly-recorded species of the genus Rhodotritoma Arrow, 1925 (Coleoptera, Erotylidae) from China, Biodiversity Data Journal 10, pp. 96740-96740 : 96740

Rhodotritoma manipurica Arrow, 1925

Rhodotritoma Rhodotritoma manipurica Rhodotritoma manipurica Arrow, 1925 - Arrow 1925: 118

Materials

Type status: Holotype. Occurrence: recordedBy: W. Doherty; individualCount: 1; Location: country: India; verbatimLocality: Assam, Manipur; Identification: identifiedBy: G.J. Arrow; Record Level : institutionCode: NHML Type status: Other material. Occurrence: recordedBy: Liang Tang ; individualCount: 10; sex: 8 males, 2 females; Location : country: China; stateProvince: Tibet Autonomous Region; county: Milin County [米林县]; verbatimCoordinates: 29.2184°N, 94.1849°E; Event: year: 2005; month: 8 Type status: Other material. Occurrence: recordedBy: Xiujuan Yang ; individualCount: 1; sex: 1 female; Location : country: China; stateProvince: Yunnan; county: Lushui County, Pianma Town [泸水县，片马镇]; verbatimCoordinates: 26.0078°N, 98.6146°E; Event : year: 2004; month: 5

Description

Body elongate-oval, convex dorsally, smooth and shining. General colour orange-yellow, the front edge of clypeus, legs and antenna black (Fig. 1 ). Head (Fig. 2 a) small, with fine and sparse punctures. Clypeus without margin, anterior border emarginate. Frontoclypeal suture incomplete, presence on both sides. Compound eye small, prominent, finely faceted; interocular distance about 0.7 times width of head. Antenna (Fig. 2 b) long and slender, exceeding the basal edge of pronotum, with golden setae; antennomere I rather large; antennomere III longer than others, antennomeres IV-VII nearly equal; antennomere Ⅷ slightly wider than VII, but significantly narrower than IX, antennomere Ⅸ triangular; antennomere X bowl-shaped; antennomere XI regularly rounded; relative lengths of antennomeres II-XI: 1.0: 1.6: 1.3: 1.2: 1.2: 1.2: 1.1: 1.4: 1.0: 1.4. Maxillary terminal palpomere (Fig. 2 c) extremely wide, nearly 5 times as wide as long. Labial terminal palpomere (Fig. 2 d) rubber hammer-shaped. Mentum (Fig. 2 e) pentagon, middle area depressed; submentum small, trapezoidal.

Pronotum (Fig. 2 f) nearly trapezoidal, widest at base (pronotum length/width ratio 0.7), slightly convex dorsally, with fine and dense punctate. Anterior border opposite head straight, margined behind eyes and sides; lateral border straight in basal half, converges slightly forward, strongly margined; basal border weakly sinuate, with narrow and complete margin, with coarse punctures on each side of sinuate. Anterior angle and posterior angle protruded and blunt, posterior angle almost rectangular. Scutellum pentagonal, with fine punctures, sharp posteriorly. Each elytron with nine distinct striae; intervals finely and sparsely punctate.

Prosternum (Fig. 2 g) with textured surface; finely and sparsely punctate. Mesoventrite (Fig. 2 h) broad, with coarse and sparse punctures. Metaventrite closely punctate at sides and sparsely punctate in middle.

Legs (Fig. 2 i) slender; tibiae gradually widening to apex.

Male genitalia (Fig. 2 j) with median lobe weakly curved; median strut straight and long, 2 times as long as median lobe. Female genitalia (Fig. 2 k-l) with long styli at apex of coxite, covered with setae at apex. Female spermatheca (Fig. 2 m) nearly kidney-shaped.

Body length: 4.5-6.0 mm; width: 2.0-4.0 mm.

Distribution

China (Tibet, Yunnan); India (Assam).

Figures

Figure 1. Rhodotritoma manipurica Arrow, 1925. Specimen from Tibet, China.

Figure 2. Morphological characters of Rhodotritoma manipurica Arrow, 1925. Scale bars: 1.0 mm or 0.1 mm. a head; b antenna; c maxillary palpus; d labial palpus; e mentum and submentum; f pronotum; g prosternum; h mesoventrite; i femur, protibia and protarsus; j aedeagus in lateral view; k-l female genitalia in ventral and dorsal views; m female spermatheca.