Clivina agumbea agumbea, agumbea, 2021

Balkenohl, Michael, 2021, Belgian Journal of Entomology, Belgian Journal of Entomology 115, pp. 1-83 : 55-57

Clivina agumbea agumbea sp. nov.

urn:lsid:zoobank.org:act:50434C05-7751-4E1D-9641-CCE8617A4170

( Figs 33 , 54 , 73 , 100 , 117 )

ETYMOLOGY. The name is a noun in apposition and refers to the type locality of the species, Agumbe Ghat in South West India.

TYPE MATERIAL. Holotype: • ♂, with labels and data: white, black printed “SOUTH INDIA MYOSORE STATE SHIMOGA DIST. AGUMBE GHAT 2000 FT. V.91 / backside T.R.S. Nathan” / “ Clivina castanea WESTW. det. Balkenohl, I. 94 ” / “Coll. J. Saltin in Coll. CBA 1997 ” ( CMBB) .

Paratypes: • 1 ♂, 4 ♀♀, 8 specs., same data as holotype; • 1 ♂, S. INDIA 25/26.v. 2003 near Agumbe , Karnataka WERNER & LIZLER leg. ( CADW). • 1 ♀, India mer. Tanjore Distr. Bhadravati / C. castanea Westw. 43 det. K. Kult / COLLECTIO KAREL KULT COLL. A. DOSTAL, 1999 ( CADW) .

DIAGNOSIS. Alarge sized species with smooth lateral margin of the pronotum and elytron, and isodiametric reticulation on intervals five to eight of the elytron. Distinguished from the most similar species C. acutimentum sp. nov. by the bigger size, the wider and rounded lobe of the mentum, and the median tooth of the mentum which is distinctly obtuse angled. The other similar species with reticulation on intervals five to eight, C. thenmala sp. nov., shows a pronotum with regularly convex lateral margin, and the lobe of the mentum is antero-laterally not projecting.

DESCRIPTION. Measurements. Holotype: Body length 10.04 mm, width 3.08 mm; ratio length/width of pronotum 0.93; ratio length/width of elytra 1.88. Other material: Body length 9.5–10.32 mm (: = 9.92 mm *), width 2.78–3.19 mm (: = 3.0 mm*), ratio length/width of pronotum 0.91–0.93 (: = 0.92*), ratiolength/widthofelytra 1.86–1.93 (: = 1.8); (*n = 10).

Colour: Glossy, laterally and apically semi-opaque. Piceous. Intermediate and hind leg dark fuscous, antenna fuscous.

Head: Athird narrower than pronotum. Clypeus slightly excised anteriorly; wing prominent, as protruding as clypeus, separated from clypeus by distinct notch; supraantennal plate moderately convex and with straight part at middle; clypeus laterally with carina, wing amargined, supraantennal plate reflexed margined. Supraantennal plate extended up to mid-eye level, separated from wing by distinct notch. Clypeus transverse, indistinctly convex and glossy, separated from frons by moderately deep furrow, furrow becoming flatter at middle. Frons moderately convex, with small pore at middle, with lateral carina at posterior eye-level bending medially in front. Clypeus and frons smooth, with minute scattered punctures, separated from wing and supraantennal plate by deep moderately wide furrow continuing posteriorly as wide supraorbital furrow with two supraorbital setigerous punctures at posterior eye level. Neck constriction developed as small step, with row of small punctures. Eye hemispherical projecting. Gena small, with posteriorly slightly projecting carina. Antenna reaching over posterior seta of pronotum, antennomeres four to ten like a cone with straight sides, oblongoelongate (ratio L/W around 2.05). Labrum indistinctly convex anteriorly, obtusely pointed at middle, with indistinct reticulation, seven setose. Mentum ( Fig. 54 ) with longitudinally reticulated surface, with lobe slightly hollowed out, shape of lobe like a conspicuously askew trapezium (triangle-like), with slightly convex anterior margin and acute-angled latero-anterior angle, lateral margin carinate, anterior margin with flattened margin, medial angle obtuse, epilobe small, developed at medial angle only, median tooth wide, as protruding anteriorly as lobe, obtuse angled anteriorly.

Pronotum ( Fig. 73 ): Disk slightly and regularly convex in lateral view, moderately convex in frontal view. Slightly wider than long. Reflexed lateral margin smooth, straight and converging in anterior half, widest in posterior third; anterior angles projecting; posterior angle marked by distinct tooth, tooth just not protruding laterally over convexity of lateral margin. Lateral channel moderately wide, reticulated, with indistinct row of foveae, distinctly convex to disk. Median line distinct, moderately wide at middle; anterior transverse line punctured, joining median line, finely joining basal constriction. Surface with transverse wrinkles, with distinct isodiametric reticulation at base and laterally up to anterior setigerous punctures.

Elytron: Disk regularly convex in anterior half in lateral view; in frontal view slightly convex at middle and distinctly convex laterally. Nearly twice as long as wide, indistinctly dilated in apical half with maximum width behind middle. Reflexed lateral margin smooth. Scutellar striole distinct; setigerous tubercle at base of first stria, with distinct tubercle at base of third interval. Striae moderately deep, punctuate-striate, one to three free at base, four to seven joining at humerus, one joining with seven at apex, two to four ending free at apex, five and six joining apically. Intervals moderately convex, eights with carina at humerus, carina at apex distinct, reaching up to last setigerous puncture. Third interval with four setigerous punctures, first situated at second stria near base, the other three approaching third stria. Intervals on disk with isodiametric reticulation of decreasing intensity towards middle, most distinct on interval eight, very faint on interval five (best visible along striae), intervals four to one shiny. Reticulation distinct in apical quarter on all intervals.

Hind wings: Fully developed.

Lower surface: Proepisternum with transverse wrinkles and longitudinal short rough wrinkles, in lateral half with distinct isodiametric reticulation. Terminal sternite of abdomen developed apically as flat narrow transverse sulcus.

Legs: Legs covered with very fine longitudinal reticulation. Protibia with three spines of moderate length, with indistinct sulcus anteriorly, movable spur distinctly arcuate in apical third.

Male genitalia ( Fig. 100 ): Median lobe moderately long, of bigger diameter at base and middle, distinctly and very regularly arcuate, apex developed as long straight regularly acuminated spatula, ventral rim distinct at middle, base with distinct apophysis, group of microtrichia at middle of surface small. Endophallus in apical part with small and dense group bristles. Ventral paramere moderately broad, regularly arcuate, lateral apophysis small, apex slender, with two long setae at apex and one small one preapically. Dorsal paramere regularly curved, at apex with three long and one smaller seta preapically.

Female coxostylus and laterotergite ( Fig. 117 ): Coxostylus moderately broad, moderately curved, dorsally with five long to medium sized, one small, and one distinctly elongated and robust nematiform setae in basal half, ventrally with four long and around twenty smaller setae, with one SSO. Laterotergite with two long, six moderately long, and one short setae basally and one isolated seta towards coxostylus.

VARIATION. The reticulation on the elytron varies to a certain degree. In few specimens it is visible along the striae only. The central pore on the frons of the head varies in size.

DISTRIBUTION. Known from Agumbe Ghat and Bhadravati, Karnataka, in South-West India.

Figures

Fig. 33. C. agumbea agumbea sp. nov., holotype.

Fig. 54. C. agumbea agumbea sp. nov., holotype.

Fig. 73. C. agumbea agumbea sp. nov., holotype.

Fig. 100. C. agumbea agumbea sp. nov., holotype.

Fig. 117. C. agumbea agumbea sp. nov., paratype.