Indapiodes carolusi, Niisato & Heffern, 2021

Niisato, Tatsuya & Heffern, Daniel, 2021, Taxonomic revision of the genus Indapiodes Miroshnikov & Tichý (Coleoptera, Cerambycidae, Cerambycinae), with description of a new species, Zootaxa 5005 (3), pp. 329-338 : 333-337

Indapiodes carolusi n. sp.

( Figures 5‒6 , 14 , 18 , 25–30 )

Diagnosis. This new species is similar in general appearance to I. bifasciatus , but clearly distinguished from it by the following characteristics: 1) head markedly voluminous, HW/PA 1.52 in male and 1.42 in female, compared to 1.29 in male and 1.32 in female in I. bifasciatus ; 2) pronotum with lateral and discal swellings relatively prominent, whereas almost obsolete or small if present in I. bifasciatus ; 3) elytra relatively short, EL/EHL 4.87 in male or 4.75 in female, whereas relatively long, 5.41 in male or 5.47 in female in I. bifasciatus ; 4) tarsi large instead of moderate in width in I. bifasciatus ; 5) male genitalia with broader median lobe measuring approximately 3.2 times as long as maximum width, and remarkably long median stem of trifurcated sclerite on endophallus measuring approximately 2.5 times as long as lateral sclerites, whereas narrower median lobe measuring approximately 3.6 times as long as the maximum width and median stem of trifurcated sclerites only a little longer than lateral plates in I. bifasciatus .

Description. Integument black, partly brown, matte in general; head black, brown mouthparts except for black apices and inner margins of mandibles; antennae yellowish brown, with slightly darker basal four antennomeres in paratype female; pronotum and scutellum black; elytra black in basal 2/5 and dark brown apicad; venters of thoraces black; abdomen dark chestnut brown; legs brownish black in femora, dark chestnut brown in trochanters and tibiae, and dark yellowish brown in tarsi.

Body densely clothed with fine pale gray pubescence, very sparsely scattered with long to very long erect pale yellow hairs, partly with dense silvery white pubescence along basal margin of metasternum and apical margin of abdominal ventrite I (male holotype provided with same pubescence on front of head); antennae provided with a sparse row of long pale yellow hairs along inner sides of antennomeres II‒V; elytra densely clothed with pale gray pubescence though almost bare on transverse area behind middle, each provided with a broad band of irregularly oriented slivery white pubescence just before middle; band is oblique along anterior margin and transverse along posterior margin, however, each band appearing to comprise two separate bands in dorsal view due to dense pubescence on both anterior and posterior margins, and somewhat sparse pubescence in median part.

Male. Head very large, sparsely provided with shallow medium-sized punctures in addition to fine, closelyspaced micro-sculptures; frons approximately half length of maximum width before base, slightly impressed along apical margin, with median groove vestigial, fine impression in apical half; tempora weakly narrowed posteriad in an arcuate line, 7/10 length of longitudinal diameter of eyes. Antennae robust, slightly longer than body; scape approximately 1.5 times as long as antennomere III; III and IV distinctly thickened at each apex; V‒VII weakly dilated apicad.

Pronotum rather short, evenly punctured as on head; sides weakly arcuate from apical fifth to basal fifth, moderately constricted before and behind the arcuate area, with small blunt tubercles at sides just before middle; disc raised along broad longitudinal area of midline, even in apical margin, slightly depressed on sides just behind apex and in basal fifth, provided with three obsolete swellings, two of which are oblique on sides of apical 2/5 and a rounded one on middle just behind the oblique pair. Scutellum triangular, convex, provided with large coarse punctures in basal half and small shallow punctures in apical half in addition to fine micro-sculptures.

Elytra slightly more than twice length of maximum width at apical fourth, sparsely provided with large deep punctures on basal halves and small shallow punctures on the rest of the elytra in addition to fine, closely-spaced micro-sculptures; sides with strongly oblique basal tenth, gradually dilated in a sinuate line to apical fourth, then arcuately narrowed to apices which are gently arcuate with rounded both inner and outer corners; disc wholly convex, deeply concave near suture behind scutellum.

Venters of thoraces coarsely shagreened and intermixed with a few small punctures. Prosternum deeply concave along thick apical collar, markedly raised ventrad towards mid-level of coxal cavities; intercoxal process medium in width, strongly dilated in triangular-shape. Mesosternum arcuately concave near middle, markedly raised ventrad before and behind the concavity; mesosternal process relatively narrow, weakly narrowed to apex which has triangular emargination at apical margin. Metasternum distinctly reduced, approximately 2/3 of basal width, markedly raised towards post-median vertical part, with a pair of weak tubercles bearing light green bristles.

Legs long and stout; femora strongly swollen in each apical half or so; tibiae simply, though rather distinctly, arcuate; tarsi large, with pro-tarsomeres I and II strongly widened apicad, meta-tarsomere I almost the same length as subsequent two tarsomeres combined.

Abdomen broad, abbreviated in each segment of ventrites II‒V, coarsely shagreened on surface; ventrite I al- most same length as II‒V combined, weakly dilated apicad; ventrite II subparallel-sided; ventrites III‒IV strongly narrowed apicad; ventrite V transversely semicircular, shallowly emarginate near middle of apical margin.

Male genitalia. Median lobe ( Figs. 25‒26 ) similar to that of I. bifasciatus , though broader and about 3.2 times as long as maximum width near middle; apical lobe (ventral plate) with blunt edges at sides of apical third, apical part subtriangular with sinuate sides and rounded extremity in dorsal view; dorsal plate not so small, broadly truncate on apical margin; median orifice dehiscent only 1/5 length of median struts. Endophallus ( Figs. 27‒28 ) with median stem of trifurcated sclerites remarkably long, about 2.5 times as long as lateral plates, a pair of warped plates before narrow trifurcated sclerites in lateral view, transversely arcuate in dorsal view, fine plate behind trifurcated sclerites simply arcuate in lateral view. Tegmen ( Fig. 29 ) ovate; paramere recognized as short arcuate plate, without setae on apical margin. Eighth tergite subtriangular on apical margin of each lobe, which is densely clothed with long setae. Eighth sternite ( Fig. 30 ) transverse quadrate, slightly arcuate at middle of apical margin, with medium-sized stem at middle of basal margin.

Female. Body broader and slightly shorter than in male. Tempora arcuately narrowed just before neck constriction which is bluntly angulate. Antennae slightly shorter than body. Elytra moderately dilated from bases to apical fifth, weakly arcuate on each apical margin with blunt angles at both sutural and external corners. Pro-tarsomere I weakly dilated apicad. Abdomen with ventrite II ( Fig. 18 ) widely rather distinctly emarginate near middle of apical margin, provided with developed rake organ.

Measurements. Male (n = 1): BL 8.72 mm; HW/PA 1.52; HW/PW 1.25; FL/FW 0.70; FA/FW 0.93; PL/PW 1.28; PL/PA 1.56; PB/PA 0.81; EL/EW 2.20; EL/EHW 4.87; EL/PL 2.31; EHW/PB 0.91. Female (n = 1): BL 8.50 mm; HW/PA 1.42; HW/PW 1.08; FL/FW 0.45; FA/FW 0.88; PL/PW 1.31; PL/PA 1.74; PB/PA 0.82; EL/EW 2.06; EL/EHW 4.75; EL/PL 2.12; EHW/PB 0.95.

Type series. Holotype: male ( CCHV), “ India, Maharashtra / 3 km E Panchgani / 1300 m X‒19‒1985 / C. W. O’Brien coll” . Paratype: 1 female ( CDHH), same data as holotype .

Etymology. The name of this new species honors our friend and colleague Carolus Holzschuh, who is one of the most productive taxonomists of Asian longhorn beetles, describing over 1,000 new taxa in the last four decades.

Distribution. India: Maharashtra Province.

Figures

FIGURES 1–6. 1‒4, Indapiodes bifasciatus Miroshnikov & Tichý, 2018: 1, male, dorsal view; 2, ditto, lateral view; 3, ditto, ventral view; 4, female, dorsal view. 5‒6, I. carolusi n. sp.: 5, holotype male, dorsal view; 6, paratype female, dorsal view.

FIGURES 7–14. Indapiodes bifasciatus Miroshnikov & Tichý, 2018: 7, mandibles, dorsal view; 8, ditto, ventral view; 9, maxilla, male, ventral view; 10, maxillary palpus, female, ventral view; 11, labium, male, ventral view; 12, hind body, dorsolateral view (showing apterous metanotum); 13, female abdomen, ventral view. 14, I. carolusi n. sp.: female abdomen, ventral view. Scale: 0.50 mm for Figs. 7–11; 2.00 mm for Figs. 12 & 13.

FIGURES 15–18. 15–17, Indapiodes bifasciatus Miroshnikov & Tichý, 2018 (SEM images): 15, head, male, dorsal view; 16, ditto, ventral view; 17, rake organ of female abdomen, ventral view. 18, Indapiodes carolusi n. sp. (SEM image): rake organ of female abdomen, ventral view. Scale: 0.50 mm.

FIGURES 19–30. 19–24, Indapiodes bifasciatus Miroshnikov & Tichý, 2018, male genitalia. 25‒30, Indapiodes carolusi n. sp., male genitalia. 19 & 25, median lobe, dorsal view; 20 & 26, ditto, lateral view; 21 & 27, copulatory piece on endophallus, dorsal view; 22 & 28, ditto, lateral view; 23 & 29, tegmen, dorsal view; 24 & 30, abdominal segments VIII–IX, ventral view. Scale: 0.50 mm for Figs 19, 20, 23–26, 29 & 30; 0.25 mm for Figs 21, 22, 27 & 28.