Macroscython granulosus Otto, 2016

Macroscython granulosus Otto, 2016

Figures 1–2 View Figures 1–2

Macroscython granulosus Otto 2016: 305–306 , fig. 125.

Differential diagnosis. The darker coloration of the integument along with granulose pronotal surfaces will readily separate M. granulosus from M. coomani .

Specimens examined. Two specimens were studied: China: Yunnan Province: CHINA: S-Yunnan / (Xishuangbanna) / 20 km NW Jinghong / Man Dian (NNNR-office) // 22°07.80N, 100°40.05E / 740m, 26.V.2008 / leg. A. Weigel, by light // collection / NATURKUNDE- / MUSEUM ERFURT [yellow printed label] // Macroscython / granulosus / Otto / Det R. L. Otto / 2022 (1 ♂, NKME) GoogleMaps ; Nepal: Gandaki Province: Nepal, Gandaki prov. / Besishahar town 1.6.2023 / lgt. M. Janata & R. Sehnal (1 ♀, JHAC) .

Redescription. Female. Length, 11.0 mm. Width, 3.5 mm. Body subcylindrical, elongate; uniformly dark reddish brown to dark brown; antennae and legs dark reddish brown; head, pronotum and elytra clothed with short, yellowish recumbent setae. Head. Subspherical; frons convex; apical margin of frontoclypeal region evenly rounded, less than 2.0 times wider than base; surfaces dull, granulose; mandibles stout, bidentate, densely punctate and rugose. Antennae. Strongly serrate, extending nearly as long as 1/2 the length of body; flagellomere I longer than wide, slightly longer than II; flagellomere II longer than wide, slightly longer than III; flagellomeres III–VIII each longer than wide, subequal. Pronotum. Basal 3/4 parallel-sided, apical 1/4 arcuate; wider than long, with moderate, sharp hind angles; disc convex; surfaces dull, granulose; base sinuous. Scutellar shield. Somewhat shiny, closely punctate, oblong, subtriangular and distally rounded. Elytra. Strongly striate; interstices elevated with close, dense punctations. Legs. First tarsomere shorter than the combined lengths of the remaining four on mesothoracic and metathoracic tarsi; tibiae rounded in cross section; metathoracic tarsomeres I–III simple; metathoracic tarsomere IV excavate-emarginate; metathoracic tarsomere V elongate; pretarsi with basally toothed claws. Venter. Sparsely punctate, with very short, yellowish recumbent setae; prothoracic hypomera with shallow, medially vaguely defined, posteriorly open lateral antennal grooves; metathoracic episterna parallel-sided; metathoracic coxal plates medially 3.0–6.0 times wider than laterally.

Distribution. This rarely encountered eucnemid species has been previously taken in and reported only from Laos and Thailand. New records are here confirmed for China and Nepal.

Biology. Developmental stages remain unknown for this species. Adults from Laos were taken from a northern annamites rainforest, northern Indochina subtropical forests and southern annamites montane rainforests ( Dinerstein et al. 2017). One specimen was taken at light in China.

Note. An interactive map (ecoregions2017.appspot.com) was embedded within the article written by Dinerstein et al. (2017), which allowed for identification of the general ecoregion from which the eucnemid species was taken in Laos.