Mystilus carvalhoi Kim et Jung 2020, new species
Creators: name: Kim, Junggon
name: Jung, Sunghoon
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Mystilus
Mystilus carvalhoi

description: <i>Mystilus carvalhoi</i> Kim et Jung, new species (Figs. 1, 3A–D) <b>Material examined.</b> Holotype male (CNU), VIETNAM: Cuc Phuong National Park, 20°19′07″N 105°36′18″E, Ninh Binh Prov., on <i>Gigantochloa</i> sp., 10 May 2017, J. Kim. Paratypes: 2 males and 1 female (CNU), VIETNAM: same data as for holotype. <b>Diagnosis.</b> Recognised by the following combination of characters: frons dark brown; first antennal segment almost dark brown; margin of compound eye reaching margin of head laterally; collar almost dark brown; second antennal segment longer than ½ third segment; scutellum dark brown, slightly tumid laterally; cuneus dark brown, slightly transparent; hypophysis of left paramere blunt, upper margin of hypophysis convex; right paramere rod-shaped, slightly swollen apically, hypophysis short and narrow; endosomal sclerite with densely tiny tooth (Fig. 3C, D). <b>Description.</b> Male. Body elongate, length 4.55–4.68. COLOURATION: generally bluish brown with hyaline hemelytra (Fig. 1A–C). <b>Head:</b> almost dark brown; vertex brown; frons dark brown; clypeus brown; antennae almost dark brown; first antennal segment generally dark brown except for pale base. <b>Thorax:</b> pronotum bluish brown, variable in range of bluish region (Fig. 1D–F); collar dark brown; sometimes posterior part of pronotum with variable yellowish marking; scutellum distinct dark brown; hemelytra almost hyaline, base of hemelytra dark brown; commissure and posterior margin of corium dark brown; cuneus dark brown, slightly transparent; vein dark brown; femur almost pale brown except for dark apical part, with dark medial line and dark markings, inner part of femur entirely pale brown; tibia almost dark brown except for pale subapical part; tarsus dark brown. <b>Abdomen:</b> dark brown. SURFACE AND VESTITURE: not glabrous, dull; head with transverse wrinkle; pronotum deeply punctate; hemelytra glabrous with weakly punctate. STRUCTURE: <b>Head:</b> distinctly prognathous; vertex width wider than compound eye; antennae much longer than length of body, linear except for first segment; first antennal segment thicker than second antennal segment, apex of first antennal segment swollen; third antennal segment longest; proportion of first to fourth antennal segments 1.1: 2.8: 5.3: 2.3; labrum slightly shorter than first labial segment; labium exceeding hindcoxae. <b>Thorax:</b> pronotum trapezoid, longitudinal length longer than ½ basal maximal width; suture of collar obsolete; calli distinct swollen; scutellum slightly tumid laterally, not perfectly flat, anterior width shorter than ½ basal pronotal width, longitudinal length shorter than commissure; lateral margin of hemelytra almost straight; cuneus elongate; legs extremely long and slender; femur apically swollen. <b>Abdomen:</b> rounded, reaching to apex of cuneus. GENITALIA: left paramere with setae partly, hypophysis not sharp, blunt, upper margin of hypophysis convex (Fig. 3A); right paramere rod shaped, without setae, slightly swollen apically, hypophysis short and narrow (Fig. 3B); endosoma membranous with sclerites, sclerite oriented from ductus seminis, sclerite with densely tiny tooth (Fig. 3C, D). Female. Body elongate, length 5.67. COLOURATION: as in male. SURFACE AND VESTITURE: as in male. STRUCTURE: as in male except for possessing genital tube at last abdominal segment. <b>Measurements (in mm).</b> Male (n=3)/Female (n=1). Body length, clypeus–apex of membrane: 4.55–4.68/5.67; head length, excluding collar: 0.31–0.33/0.38; head width, including compound eyes: 0.83–0.85/0.92; vertex width: 0.45–0.46/0.47; 1 st antennal segment length: 1.15–1.17/1.22; 2 nd antennal segment length: 2.79–2.89/2.94; 3 rd antennal segment length: 5.33–5.46/5.88; 4 th antennal segment length: 2.31–2.40/2.99; total antennal length: 11.58–11.92/13.03; labial length: 2.14–2.16/2.38; anterior pronotal maximal width (straight): 0.75–0.76/0.79; mesal pronotal length: 0.81–0.83/0.87; posterior pronotal maximal width (straight): 1.05–1.10/1.22; anterior scutellar width: 0.51–0.53/0.69; mesal scutellar length: 0.43–0.49/0.65; commissure length: 0.82–0.91/1.10; outer embolial margin length (straight): 2.01–2.19/2.72; outer cuneal margin length (straight): 0.50– 0.56/0.65; maximal width across hemelytron: 0.57–0.59/0.67. <b>Etymology.</b> Named after J.C.M. Carvalho, a taxonomist for Miridae who studied Mecistoscelini; a noun in genitive case. <b>Host.</b> <i>Gigantochloa</i> sp. (Poaceae: Bambusoideae), the same plant as the host of <i>M. fredrici</i>, new species, above (Fig. 4). <b>Distribution.</b> Vietnam (Northern). <b>Remarks.</b> This species is similar in general appearance to the species <i>M. priamus</i>, but it can be distinguished by the larger body more than 4.5 mm and the length of second antennal segment longer than ½ length of third antennal segment. According to the previous studies on <i>M. priamus</i> (Distant, 1904; Lansbury, 1963), <i>M. priamus</i> is not more than 4 mm, making it the smallest species in this genus.
description: Published as part of <i>Kim, Junggon &amp; Jung, Sunghoon, 2020, Two new species of the genus Mystilus Distant (Hemiptera: Miridae: Mirinae) from Vietnam, with discussion on morphological variation based on molecular data, and a revised key for Mystilus species, pp. 488-495 in Raffles Bulletin of Zoology 68</i> on pages 490-492, DOI: 10.26107/RBZ-2020-0067, http://zenodo.org/record/5344638
description: {"references": ["Distant WL (1904) The fauna of British India, including Ceylon and Burma. Rhynchota. Volume 2, Part 2. Taylor &amp; Francis, London. Pp. 243 - 503.", "Lansbury I (1963) Revision of the tribe Mecistoscelini Reuter (Hemiptera-Heteroptera, Miridae). Bulletin of Entomology, 4: 1 - 12."]}