Diplotrichus catenatus ( Schedl, 1953 )

Jordal, Bjarte H., 2021, An integrated taxonomic revision of Diplotrichus (Coleoptera, Scolytinae) supports a Malagasy origin and single colonisation of South Africa, Zootaxa 5047 (2), pp. 101-122 : 114-116

Diplotrichus catenatus ( Schedl, 1953)

( Figs 43, 46, 49, 50 )

Micraciops catenatus Schedl, 1953: 86 , orig. spelling

Lanurgus catenatus ( Schedl, 1953) , combination by Schedl (1963)

Type material. Madagascar, Pays d’Androy , Alluaud, 1901 [ NHMW] .

Diagnosis. Length 2.3–2.4 mm, 2.3 × as long as wide; colour black. With a characteristically deviating pattern of multiple confused rows of broadly spatulate setae which are in part semi-recumbent. Female frons with very dense brush of long golden setae and equally long tuft of setae on the inner face of the scapus.

Distribution. Madagascar. Found manly in spiny forests of the south ( Schedl 1977).

New records. Madagascar, Mahafaly plateau, Atanambao nr Beana, BMNH2010-29 [ GIS: -23.50, 44.54], 14.01.2013, M. Tryzna; Ranomafana NP, BMNH 2010-29, 958 m [ GIS: -21.253, 47.421], 17.11.2011, light trap, M. Tryzna. BMNH NHMUK .

Remarks. This is the only species in the genus which has multiple confused rows of semirecumbent scale-like setae on some of the interstriae. Molecular data from multiple loci nevertheless place this species close to D. elongatus and D. granulatus ( Fig. 7 ) and share the condition of split setae on ventrite 1 and the metaventrite typical for the genus.

Figures

FIGURE 7. Maximum likelihood tree topology for Diplotrichus based on nucleotides from five gene fragments. Node support values from 100 bootstrap replicates are shown on branches.

FIGURES 43–52. Dorsal, lateral, and front view of Diplotrichus catenatus female (43, 46, 49) and male (50), Diplotrichus euphorbiae male paratype (44, 47, 51), Diplotrichus plenus sp. nov. male holotype (45, 48, 52).