Crypturgus pusillus ( Gyllenhal, 1813 )

Buhroo, Abdul Ahad, 2024, A taxonomic monograph of subfamily Scolytinae (Coleoptera: Curculionidae) in the Western Himalaya, Zootaxa 5533 (1), pp. 1-82 : 17-18

10. Crypturgus pusillus ( Gyllenhal, 1813)

( Figure 13)

= Bostrichus pusillus Gyllenhal, 1813

= aphodioides Villa, 1833 ( Bostrichus )

= atomus LeConte, 1868

= minimus Stebbing, 1903 ( Polygraphus )

= danicus Eggers, 1932

This species is diagnosed by the following morphological characters: ♂ frons convex with reticulate surface and fine, obscure punctures; vestiture of short, fine hairs; pronotum 1.15× as long as wide, sides moderately arcuate, converging equally anteriorly and posteriorly; surface reticulate at margins, sub-reticulate and shining towards disc; punctures small and coarse; hair-like vestiture except on disc; elytra 1.33× as long as pronotum and 1.42× as long as wide; strial punctures small, deep; striae 1 and 2 impressed on disc, others not impressed; interstriae slightly wider than striae, smooth, shining with minute to obsolete punctures; declivity convex, moderately steep; strial punctures smaller than on elytra; vestiture inconspicuous on disc and consists of minute strial and slightly longer interstrial hairs, longer setae throughout the body margins; body black to dark-brown; body length: 1.09–1.12 mm, 2.61× as long as wide.

Sexes indistinct in the material studied.

Material examined: New records: India: 10 specimens. Kashmir, Anantnag , Achabal (33° 40′58.74′′ N, 075° 13′22.89′′ E, 5505 ft.), A.A. Buhroo, 09.08.2011 ( KUIC) . Jammu, Ramban, Batricheshma (33° 17.545′ N, 075° 10.597′ E, 3640 ft.), A.A. Buhroo, 20.05.2017 ( KUIC) . Jammu, Ramban, Dugalaid Batote (33° 07.053′ N, 075° 18.967′ E, 5420 ft.), A.A. Buhroo, 21.05.2017 ( KUIC) . Kashmir, Kupwara, Tangdhar (34° 23.527′ N, 073° 51.894′ E, 6525 ft.), A.A. Buhroo, 10.07.2017 ( KUIC) . Kashmir, Baramulla, Boniyar (34° 07.405′ N, 074° 10.717′ E, 5715 ft.), A.A. Buhroo, 30.09.2017 ( KUIC) . Himachal Pradesh, Sanwara Solan (30° 88.677′ N, 076° 99.854′ E, 4065 ft.), A.A. Buhroo, 20.02.2018 ( KUIC) .

Distribution: India: Himachal Pradesh, Jammu and Kashmir, Punjab, Uttarakhand. North America, North Africa, Europe, Northern Asia

Hosts: Abies pindrow , Cedrus deodara , C. libani , Picea smithiana , Pinus roxburghii ( Pinaceae ).

Phylogenetic assessment:

A phylogenetic analysis of the Himalayan Crypturgus pusillus and other similar species of the genus was carried out using the COX-1 genes to determine the evolutionary relationship between them and other related species. Himalayan Crypturgus pusillus formed a monophyletic cluster with C. pusillus distributed in Germany and Sweden ( Fig. 14 ). It was observed that Crypturgus pusillus species were distantly separated from other species of Crypturgus examined in the present analysis. The Himalayan C. pusillus , however, differs from European C. pusillus species by a nucleotide difference of 14.57%.

Figures

FIGURE 14. A phylogenetic tree obtained from the NJ for the COX-1 genes of the Himalayan C. pusillus (in blue) and related species. Numbers at the branches represent bootstrap values.