Hylurgus indicus Wood, 1985

Buhroo, Abdul Ahad, 2024, A taxonomic monograph of subfamily Scolytinae (Coleoptera: Curculionidae) in the Western Himalaya, Zootaxa 5533 (1), pp. 1-82 : 35-36

25. Hylurgus indicus Wood, 1985

( Figure 33 )

This species is diagnosed by the following morphological characters: ♀ frons strongly convex, coarsely tuberculate and without transverse impression just below middle; epistoma with medium carina of uniform height; vestiture of long, abundant hairs, and a fringe of hairs on the epistomal margin; eyes entire, elongately oval; antennal funicle with six segments, club ovate with three recurved sutures; pronotum rather quadrate, 1.05× as long as wide; sides somewhat parallel, slightly narrowing anteriorly; surface dull, with small, close, deeper punctures and a median longitudinal raised line; vestiture of moderately abundant long hairs; elytra 1.7× as long as pronotum, 1.8× as long as wide; elytral base substraight equal in width to pronotal base, sides parallel up to basal three-fourths with evenly rounded apex, elytral surface dull rather transversely wrinkled; striae weakly impressed, strial punctures moderately large, distinct, set apart about a diameter of a puncture; interstriae slightly wider than striae, with very small, close, punctures; interstrial vestiture of erect setae mostly in rows both disc and declivity; body dull reddish brown; body length: 3.2 mm, 2.96× as long as wide.

Male: Not studied.

Remarks: This species strongly resembles H. micklitzi Watchl, 1881 but differs from it by smaller size and absence of a frontal tubercle. Hylurgus indicus also differs both from H. ligniperda and H. micklitzi by absence of tuft of hair-like setae on elytral declivity in female.

Material examined: Paratype ♀ in FRI Dehradun. Type locality: Kumaon Hills, W. Almora, Uttarakhand, India

Distribution: India: Kumaon Hills, W. Almora (Uttarakhand)

Hosts: Pinus roxburghii ( Pinaceae )

Genus Xylechinus Chapuis, 1869

Xylechinus species are diagnosed by the following morphological features: body length: 1.5–3.5 mm; antennal funicle with five segments; club with three sutures; anterior margin of eye slightly emarginate or sinuate; frons usually with median carina above the epistoma; pronotum usually wider than long, unarmed; pronotum with recumbent, filliform setae; scutellum small; metepisternal setae scale-like; elytral basal margin armed by a row of coarse crenulations; filliform setae of 1 st interstria lighter, and more closely distributed than other interstriae; declivity convex, with small granules and vestiture of small scale-like setae and sparse long, light, semi-erect, thick bristles; host: deciduous trees.

Figures

FIGURE 33. Hylurgus indicus. Paratype female: dorsal view A, lateral view B, frons C.