Rugiluclivina alutacea

Balkenohl, Michael, 2018, Notes on Oriental Clivinini and the description of two new species (Coleoptera: Carabidae: Clivinini), Linzer biologische Beiträge 50 (1), pp. 197-215 : 205-209

Rugiluclivina alutacea LESNE, 1896 comb.nov. ( Figs 8-11 )

Clivina alutacea LESNE, 1896: 241 .

Clivina alutacea LESNE, 1904: 67 .

Clivina alutacea LESNE, 1896 , BALKENOHL 2001: 14.

Clivina alutacea LESNE, 1896 , LORENZ 2005: 141.

Clivina alutacea LESNE, 1896 , BALKENOHL 2017b: 254.

T y p e m a t e r i a l: Holotype: ♀, with labels and data: beige, circular, handwritten with black ink "2579 86", backside yellow / light-brown, rectangular, printed " MUSEUM PARIS CAMBODGE A. PAVIE 1886 " / beige, rectangular, handwritten with black ink " Clivina alutacea Lesne Type" / beige, rectangular, handwritten with black ink and printed " alutacea Lesne TYPE det. K. Kult 57"; labels as in Fig. 9 ( MNHN).

R e m a r k: The holotype is not in a good condition. The pieces of the body were mounted together some time ago with black glue. The same is true for some of the specimens from the additional historic material. In the holotype the following parts are missing: Left antennae from joint three onwards, right one from joint six onwards ; movable spur of left front tibia, terminal three tarsalia of left intermediate leg and the complete right hind leg. The right elytron and the dorsal integument shows a big whole where the original not sharpened pin was placed. A d d i t i o n a l m a t e r i a l seen by LESNE: 1 spec. with labels and data: beige, circular ,

handwritten with black ink "1036 75" backside yellow / light-brown, rectangular, printed "MUSEUM PARIS COCHINCHINE JULIEN 1875" / beige, rectangular, handwritten with black ink " Clivina alutacea Lesne " (MNHN). 1♂, 1 spec., with labels and data: beige, circular, handwritten with black ink "2579 86" backside yellow / light-brown, rectangular, printed "MUSEUM PARIS CAMBODGE A. PAVIE 1886" (MNHN). 2 specs., with labels and data: beige, circular, handwritten with black ink "1036 75" backside yellow / light-brown, rectangular, printed "MUSEUM PARIS COCHINCHINE JULIEN 1875" (MNHN).

D i a g n o s i s: A medium sized black Rugiluclivina species with multiple fine carinae on the frons of the head, shorter and completely reticulated elytra. Distinguished from the most similar species R. reticulata BALKENOHL by the completely convex and smooth reflexed lateral margin of the pronotum. In addition, the intervals of the elytra are convex, the second setigerous puncture on interval three is situated behind middle, and the striae one and two, three and four, and five and six joining at apex. Moreover, the aedeagus and the apical setae of the male parameres exhibit a different pattern.

R e d e s c r i p t i o n:

Measurements: Holotype: Body length 8.12 mm; width 2.31 mm; ratio length/width of pronotum 0.89; ratio length/width of elytra 1.90.

Other material: Body length 7.44-8.12 mm (ẍ = 7.79 mm *); width 2.14-2.40 mm (ẍ = 2.25 mm *); ratio length/width of pronotum 0.89-0.91 (ẍ = 0.89*); ratio length/width of elytra 1.88-1.95 (ẍ = 1.90*); (*n = 6).

Colour: Dorsal and ventral surface dull; nigricans; mandibles niger; mouthparts, intermediate and hind legs fuscus; antennae with scapus and pedicellus fuscus, other parts nigricans.

Head ( Fig. 8 ): One fourth smaller than pronotum. Outline subsquare. Clypeus relatively wide, straight anteriorly, with two teeth anteriorly, reflexed margined, separated from frons by deep transverse furrow, distinctly separated from wings by notches, surface with five carinae in form of an inverted V. Wings somewhat wider than teeth of clypeus, as far projecting anteriorly as teeth of clypeus, surface with few longitudinal rugae. Supraantennal plates vaulted, laterally amargined, projecting widely laterally up to mideye level, with small obtuse rounded angle anteriorly, projecting anteriorly less far as wings, separated from wings by distinct notches, surface with irregular longitudinal carinae. Furrows between clypeus, wings, supraantennal plates joining posteriorly. Two clypeal setae situated at joining point of furrows, joined furrows joining with transverse furrow at level of mid-eye. Supraorbital furrow deep, wide, diverging posteriorly and running to level of posterior third of eye. Supraorbital carina invisible, bilaterally with two distinct supraorbital setigerous punctures. Frons distinctly convex, surface with irregular carinae laterally and at level of transverse furrow, completely irregular and fine at middle. Neck constriction slight but well visible laterally. Eyes subglobose, projecting 10

laterally, genae indistinct. Antenna elongated, ratio length/width of segments four and five 1.82, scapus with longitudinal reticulation, seta on scapus situated dorso-frontally at apical tip, segment two attached eccentrically, segment three pubescent in apical twothirds, fully pubescent from segment four onwards. Labrum wider as clypeus, bilobed, conspicuously excised at middle, amargined, six-setose, ciliate laterally, surface with transverse reticulation in basal part. Mandible distinctly shorter than head, slender in apical third, acute, apical half bent dorsally, with few longitudinal carinae. Maxillary palpus slender, two apical segments bent laterally. Apical segment of labial palpomere fusiform, segment two tumid, with one seta. Ligula long, wide, spatulate, with small tooth at each side, with one apical setigerous puncture.

Pronotum ( Fig. 8 ): Subquadrate, slightly convex on disc (lateral view), distinctly convex in frontal view. Anterior angles pointed, slightly rounded and projecting. Posterior angles distinct, obtusely toothed. Reflexed lateral margin distinctly convex, more rounded to angles in anterior and posterior quarter. Lateral channel narrow, of same size in whole length, anterior setigerous puncture connected with channel, posterior seta removed from channel by diameter of pore. Base slightly produced at middle. Reflexed margin smooth, thin in whole length, running from posterior angles to base as straight line. Anterior transverse line deep, reaching anterior margin, not joining lateral margin. Median line distinct, complete, joining with anterior transverse line, narrow towards base. Dorsal surface conspicuously coreaceate, lateral transverse rugae indistinct or missing, with isodiametric reticulation baso-laterally. Basal impressions short, indistinct.

Elytra ( Fig. 8 ): Cylindriform, slightly transversally depressed in anterior third in lateral view, distinctly convex in frontal view. Slightly dilated in apical half, slightly contracted to humerus. Humerus rounded, rectangular. Base concave at declivity, finely margined from humerus to peduncle, declivity slightly overhanging over parts of peduncle, setigerous puncture at base of first stria, with one small tubercle at base of each free interval. Scutellar stria indistinct, without tubercle-like carina. Striae punctuate-striate, one to four free at base, two to six not reaching tip of apex, one and two, three and four, and five and six joining at apex. Intervals flattened to moderately convex, seventh carinate at humerus and apex, eights completely carinate. Interval three with four setigerous punctures, situated at the third stria, second setigerous puncture situated distinctly behind middle of elytra. Reflexed lateral margin smooth. Whole surface covered with dense isodiametric reticulation.

Hind wings: Fully developed.

Ventral surface: Proepisternum covered with distinct isodiametric reticulation and some transverse wrinkles, submarginal furrow complete. Epipleuron with distinct isodiametric reticulation. Abdomen covered with distinct isodiametric reticulation, the two apical setigerous punctures on terminal segment widely separated.

Legs: Protibia with distinct and complete carina and sulcus dorsally, lateral upper spine ensiform, turned distinctly ventrally and slightly laterally; movable spur ensiform, turned indistinctly ventrally. Three preapical lateral denticles distinct, obliquely truncated. First segment of protarsus longer than segments two to four together, with rows of setae dorsally. Intermediate tibia with distinct spur preapically, furnished with seta, inner side with few setae.

Sexual differences: Male: Terminal sternite fuscus; apical half with two blunt carinae, with irregular grain-like rugae. Female: Apical half of terminal sternite with irregular to transverse rugae, free of reticulation at middle.

Male genitalia ( Fig. 10 ): Median lobe slender, nearly straight in basal half, moderately and equally arcuate in apical part. Endophallus densely folded. Both parameres slender, moderately arcuate, somewhat distorted, dorsal one with two longer and two smaller and ventral one with two longer and one smaller nematiform setae at apex.

Female genitalia ( Fig. 11 ): Coxostylus slightly sigmoid, dorso-ventrally moderately depressed, gently curved to apex, apex asetose, with one big robust and three medium sized nematiform setae in middle part, laterally with one long thin seta.

Variation: In the holotype the left tooth of clypeus is broadened and not acute.

Additional material: Some specimens are not as black as the holotype, thought slightly more piceous. Variation was also noted for the frons of the head within the irregularity of the rugae.

D i s t r i b u t i o n: According to the labels, the original description (in Latin) and the rewriting (in French) of LESNE (1896, 1904), the specimens were collected in "Conchinchine" and " Cambodge " without further specification. These are old terms for the South of Vietnam (geographically) and parts of East of Cambodia.

R e l a t i o n s h i p s: The species R. alutacea and R. reticulata seem to be vicarious species, one occurring at the border to the Palearctic region and the other in the middle of the tropical belt.

Figures

Figs 8-11: Rugiluclivina alutacea LESNE: (8) Holotype, habitus, with original mounting card and pin; (9) Original lables; (10) Aedeagus and parameres, dorsal view, specimen from Cambodia; (11) Female coxostylus, holotype.