Carphoborus zhobi ( Stebbing, 1909 )

Buhroo, Abdul Ahad, 2024, A taxonomic monograph of subfamily Scolytinae (Coleoptera: Curculionidae) in the Western Himalaya, Zootaxa 5533 (1), pp. 1-82 : 44-46

33. Carphoborus zhobi ( Stebbing, 1909)

( Figure 44 )

= Phloeosinus zhobi Stebbing, 1909 This species is diagnosed by the following morphological characters: ♀ frons plano-convex, surface reticulopunctate with dense small punctures, a single large puncture visible at the middle of shining median area; a corona of moderately short hairs around the margin of frons, short erect bristles visible around the corona laterally; epistomal margin with a fringe of long, dense, pale hairs; eyes emarginate; antennae yellow, funicle five-segmented, club four-sutured; pronotum 1.47× as wide as long, widest at basal third, constricted anteriorly towards rounded apex; surface convex, reticulate punctate with small punctures, a median longitudinal raised line forming a distinct carina on basal half; surface with a mixture of short scales and erect bristles; elytra 1.49× as long as wide, 2.34× as long as pronotum, anterior margin convex with 10 or 11 crenulations, small granules on elytral base; striae deep with small, confused punctures each with a microhair; interstriae more than twice as wide as striae, surface convex, coarsely reticulate with irregular large punctures; interstrial surface with 2–3 irregular rows of short scales and some erect bristles, bristles more denser laterally and on declivity; declivity short and steep, interstriae 1, 3, 5, 7 and 9 raised and marked with distinct tubercles; interstriae 3 and 9 meet with each other before reaching apex; declivital margin roughened with denticles; body dark-brown, body length: 1.80–1.88 mm, 2.2× as long as wide.

Males slightly larger than females, frons with moderately abundant scale-like setae not forming corona but with a pair of minute, transversely placed, fused tubercles on the middle; body length: 2.0– 2.05 mm.

Material examined: New records: India: 2 ♂ ′s, 4 ♀ ′s. Jammu , Kishtwar, Kundhal Padder (33° 18.820′ N, 076° 04.492′ E, 7000 ft.), A.A. Buhroo, 09.09.2017 ( KUIC). Jammu, Kishtwar, Kijaye Padder (33° 16.144′ N, 076° 07.680 E, 6145 ft.), A.A. Buhroo, 09.09.2017 ( KUIC) .

Distribution: India: Himachal Pradesh, Jammu (new record). Pakistan

Hosts: Pinus gerardiana ( Pinaceae )

Genus Polygraphus Erichson, 1836

Polygraphus species are diagnosed by the following morphological characters: body length: 1.2–3.5 mm; cylindrical body; bipartite eyes (completely divided into two); funicle five to six-segmented; club flat, leaf like and unsegmented (without sutures); pronotum wider than long, unarmed, smooth, finely, closely punctate; invisible scutellum; anterior elytral margin armed with coarse crenulations; 1 st ventrite as long as terminal ventrite; 2 nd, 3 rd, and 4 th ventrites small; presence of scaly short pubescence on elytra; frons sexually dimorphic: male frons rounded, with short, filliform setae and closely placed two medial tubercles at upper level of eyes; female frons with corona of short, filliform setae.

Key to the species of Himalayan Polygraphus Erichson, 1836

1 Body length equal to or more than 3.00 mm................................................................ 2

- Body length less than 3.00 mm.......................................................................... 4

2 Elytra three times longer than pronotum; antennal club with broader apex....................... P. aterrimus Strohmeyer

- Elytra less than or two times longer than pronotum; antennal club with pointed apex................................ 3

3 Female frons with two tufts of long hairs around the upper margin of concavity almost touching each other at the middle of frons.................................................................................. P. major Stebbing

- Female frons with two prominent, reddish-golden brushes of long hairs around the upper and lateral margins of frons, curled inwards and downwards not joining medially................................................. P. trenchi Stebbing

4 Female frons with a pair of transverse tubercles............................................................. 5

- Female frons without a pair of transverse tubercles; but with fringe of incurved, golden hairs along upper and lateral margins...................................................................................... P. difficilis Wood

5 Elytral interstriae with a row of widely spaced long, erect, scale-like setae and ground cover of very short blunt, feathery scales and fine hairs........................................................................... P. setosus Schedl

- Elytral interstriae without a row of longer, erect setae; rather roughened with small granules; interstriae nearly 3× as wide as striae............................................................................................... 6

6 Male frons shallowly concave with thick, curled tuft of hairs, touching each other at the middle of frons, covering frontal two-third portion; elytra 2.1× as long as pronotum; discal striae 1 and 2 distinctly impressed up to the commencement of declivity; interstria 2 terminating at the commencement of declivity......................................... P. pini Stebbing

- Male frons flattened with a distinct fringe of short curled golden yellowish hairs around the margin of vertex upto posterior margin of eyes; elytra 1.8× as long as pronotum; discal striae not impressed; declivity impressed along stria 1; declivital interstriae 1 and 3 elevated, marked by blunt scales.......................................... P. longifolia Stebbing

Figures

FIGURE 44. Carphoborus zhobi. Female: dorsal view A, lateral view B; male: fronto-lateral view C.