Xyleborus perforans ( Wollaston, 1857 )

Buhroo, Abdul Ahad, 2024, A taxonomic monograph of subfamily Scolytinae (Coleoptera: Curculionidae) in the Western Himalaya, Zootaxa 5533 (1), pp. 1-82 : 71-72

56. Xyleborus perforans ( Wollaston, 1857)

( Figure 70)

= Tomicus perforans Wollaston, 1857

= testaceus Walker, 1859 ( Bostrichus )

= duponti Montrouzier, 1861 ( Bostrichus )

= tuberculatus Motschulsky, 1863 ( Anodius ) = denticulus Motschulsky, 1863 ( Anodius ) = kraatzii Eichhoff, 1868

= philippinensis Eichhoff, 1878b

= immaturus Blackburn, 1885

= hirsutus Lea, 1894 ( Xylopertha )

= whitteni Beeson, 1935a

= apertus Schedl, 1939

= criticus Schedl, 1950

= shionomisakiensis Murayama, 1951

= cylindrus Schedl, 1951

= minimus Schedl, 1955

This species is diagnosed by the following morphological characters: ♀ frons weakly convex; surface rugosely reticulate with sparse shallow punctures distinct towards eyes; eyes elongately oval with deep emargination; antennal club obliquely truncate on anterior face, basal corneous portion with recurved feebly costate apical margin forming a complete ring being sub-apical on posterior face, (type 2); pronotum 1.16× as long as wide; basal margin substraight, lateral sides feebly outcurved, anterior margin broadly rounded and unarmed; summit at middle; declivous portion with fine asperities; posterior half smooth and shiny with sparse fine punctures; mixture of short and long hairs visible on anterior and lateral portions; scutellum small, smooth and triangular; elytra 1.70× as long as wide and 1.43× as long as pronotum; basal margin substraight; lateral sides almost straight and sub-parallel on basal two-thirds, gradually narrowing posteriorly into broadly rounded apex; discal striae not so impressed, marked by small, deep punctures, each with a microhair; interstriae smooth and shiny, nearly 1.5× wider than striae with widely placed small punctures and long fine hairs; declivity commencing on apical third, face steep and weakly convex; declivital striae as on disc with somewhat larger punctures; interstriae 1 and 3 each armed with four small and strong tubercles; interstriae 2 with few granules at declivital summit, interstriae 4, 5 and 6 with one to three rather small tubercles on upper half of declivity; all interstriae with sparse, long erect hairs; body color light to reddish brown; body length: 2.42 mm, 2.95× as long as wide.

Male dwarf; pronotum almost as long as wide, sub-squarish, basal margin substraight; lateral margins sub-parallel, anterior margin moderately round, angularly produced medially with weak asperities.

Material examined: New record: India: 1 ♀. Himachal Pradesh, Gaghar (32° 09.463′ N, 076° 16.697′ E, 2584 ft.), A.A. Buhroo, 26.09.2018 ( KUIC) .

Distribution: India: Himachal Pradesh (Gaghar, Kangra), West Bengal

Hosts: Mangifera indica ( Anacardiaceae ) (new host record). Climbers, seeds of Mangrove plants

Genus Xylosandrus Reitter, 1913

Xylosandrus species are distinguished by the following combination of characters: body length: 1.3–3.9 mm; anterior margin of the compound eye shallowly to deeply emarginate; antennal funicle with five segments, club flat, obliquely truncate with segment 1 covering the posterior face (type 1); pronotum slightly wider than long, anterior margin armed by distinct serrations, basal pronotum with median mycangial tuft; lateral margins obliquely costate; scutellum flat, flushed with elytra; elytral declivity steep, unarmed and granulate-punctate; procoxae widely separated; host: deciduous trees.