Canuschiza insularis Lacroix, 1999

Sehnal, Richard, Král, David & Bezděk, Aleš, 2014, Canuschiza of Socotra Island (Coleoptera: Scarabaeidae: Melolonthinae) Part 1. Canuschiza insularis species group, Acta Entomologica Musei Nationalis Pragae 54, pp. 139-171 : 142

Canuschiza insularis Lacroix, 1999 species group

Diagnosis. Body elongate, almost parallel, weakly convex; colour chestnut brown to black, elytra often somewhat alutaceous, macrosetation pale. Dorsal surface of head, pronotum, scutellar shield and elytra covered with short recumbent scale-like macrosetae, ventral surface of thorax and abdomen with recumbent scale-like macrosetae. Labrum transverse, deeply bilobed, lobes rounded. Clypeus transverse, anterior angles rounded. Head with simple darkened fronto-clypeal suture (translucent endocarina) ( Fig. 1A ). Eye-canthus narrow, short, bare or with few macrosetae. Antenna with eight or ten antennomeres; club with three antennomeres, almost straight to regularly arcuate, sparsely and shortly macrosetaceous. Terminal maxillary palpomere elongate, truncate apically. Pronotum transverse, weakly convex, widest approximately at middle. Posterior angles approximately rectangular or even distinctly produced posteriad (e.g. Figs 6C , 9C ). Scutellar shield large, almost equilaterally triangular. Elytra weakly convex, parallel-sided, rounded apically. Striae missing, except of feebly visible sutural stria. Surface finely microsculptured, alutaceous. Punctation coarse, each puncture bearing short, pale scale-like, almost recumbent macroseta. Macropterous or micropterous. Protibia narrow, tridentate, terminal calcar inserted against medial dent. Meso- and metatibia slightly expanded apicad, with two macrosetiferous longitudinal carinae. Upper terminal calcar of metatibia flattened. Claws bifid, with ventrobasal teeth (e.g. Fig. 2B ). Pygidium slightly transverse, convex, all around bordered, broadly rounded apically, irregularly covered with coarse macrosetiferous punctures. Parameres symmetrical, shorter than phallobasis, regularly curved in lateral aspect, rounded apically in dorsal aspect; apex with tuft of long pale macrosetae ( Figs 10A–D , 11A–D ).

Comparison. Members of C. insularis species group differ from C. minuta mainly in larger size (9.0– 17.2 mm), weakly convex body, simple darkened fronto-clypeal suture (translucent endocarina) ( Fig. 1A ), and the rectangular shape of posterior angles of protonum, in some species even distinctly produced posteriad (e.g. Figs 6C , 9C ), while C. minuta is smaller (7.5 mm), with distinctly convex body, head with well visible elevated double fronto-clypeal carina ( Fig. 1B ) and broadly rounded posterior angles of protonum.

Figures

Figs 1A–D. Canuschiza Lacroix, 1999:A–B – head, dorsal view; C–D – metathoracic wing.A – Canuschiza insularis Lacroix, 1999, holotype; B – C. minuta Lacroix, 1999, holotype; C – C. hagher sp. nov., holotype; D – C. skand sp. nov., holotype. Scale bar: 2.0 mm. Figs A, B not to scale.

Figs 2A–H. Canuschiza adah sp. nov., dorsal view: A–D – male, holotype, body length 13.7 mm; E–H – female, paratype No. 7, body length 13.0 mm. A, E – habitus; B, F – protarsal claw; C, G – detail of laterobasal area of pronotum and elytron; D, H – head. Not to scale.

Figs 6A–D. Canuschiza hagher sp. nov., male, holotype, body length 17.0 mm, dorsal view.A – habitus; B – protarsal claw; C – detail of laterobasal area of pronotum and elytron; D – head. Not to scale.

Figs 9A–I. Canuschiza skand sp. nov., dorsal view: A–E – male, holotype, body length 12.5 mm; F–I – female, paratype No. 33, body length 14.2 mm. A, F – habitus; B, G – protarsal claw; C, H – detail of laterobasal area of pronotum and elytron; D, I – head; E – detail of lateroapical area of pronotum. Not to scale.

Figs 10A–D.Aedeagus in dorsal (left) and lateral (right) view:A – Canuschiza adah sp. nov., holotype; B – C. croton sp. nov., holotype; C – C. dracaena sp. nov., holotype; D – C. firmihin sp. nov., holotype. Scale bar: 1.0 mm.

Figs 11A–D. Aedeagus in dorsal (left) and lateral (right) view: A – Canuschiza hagher sp. nov., holotype; B – C. insularis Lacroix, 1999, holotype; C – C. jatropha sp. nov., holotype; D – C. skand sp. nov., holotype. Scale bar: 1.0 mm.