Gonioctena (Brachyphytodecta) mauroi, Cho & Borowiec, 2016

Cho, Hee-Wook, 2017, Two new species of the Gonioctena mauroi species-group from China (Coleoptera: Chrysomelidae: Chrysomelinae), Acta Entomologica Musei Nationalis Pragae 57 (1), pp. 173-181 : 174-175

Gonioctena (Brachyphytodecta) mauroi species-group

Differential diagnosis. Body length 5.9–6.9 mm. Body short-oval, strongly convex ( Figs 1, 3 ). Dorsum reddish-brown with basal margin of pronotum black ( Figs 2, 4 ). Venter entirely or largely reddish-brown. Legs black, partially blackish-brown. Aedeagus long and thin, setose apicolaterally, with apical process varying in shape ( Figs 7, 9, 11–12 ). Gonioctena (B.) flavipennis (Jacoby, 1888) is almost identical with members of Gonioctena mauroi speciesgroup in body shape and coloration, but differs in its glabrous aedeagus. The most consistent characteristic that differentiates this species-group from other species of the subgenus Brachyphytodecta is setose aedeagus.

Key to the species of the Gonioctena (Brachyphytodecta) mauroi species-group

1 Apex of aedeagus triangular or subtriangular ( Figs 9, 11–12 ). ....................................... 2

– Apex of aedeagus semicircular ( Fig. 7 ). .............................. G. (B.) kuatunensis sp. nov.

2 Aedeagus subparallel-sided, with apical process relatively broad ( Figs 9, 11 ). .............. 3

– Aedeagus moderately narrowed to apical 1/4, with apical process relatively narrow, moderately widened apically, lateral sharp tooth-like projections near apex ( Fig. 12 ). .......... ........................................................................ G. (B.) medvedevi Cho & Borowiec, 2016

3 Apical process of aedeagus widest in apical 1/3 and subequal to median lobe in width in dorsal view; apex pointed in lateral view ( Fig. 9 ). ........ G. (B.) longshengensis sp. nov.

– Apical process of aedeagus widest in middle and slightly narrower than median lobe in dorsal view; apex blunt in lateral view ( Fig. 11 ). ............................................................... ............................................................................. G. (B.) mauroi Cho & Borowiec, 2016

Figures

Figs 1–4. 1–2 – Gonioctena (B.) kuatunensis sp. nov., holotype: 1 – dorsal habitus; 2 – head and pronotum. 3–4 – G. (B.) longshengensis sp. nov., holotype: 3 – dorsal habitus; 4 – head and pronotum. Scale bars = 1.0 mm.

Figs 6–12. 6–7 – Gonioctena (B.) kuatunensis sp. nov.: 6 – antenna; 7 – aedeagus, holotype (dorsal and lateral views). 8–10 – G. (B.) longshengensis sp. nov.: 8 – antenna; 9 – aedeagus, holotype (dorsal and lateral views); 10 – spermatheca. 11 – Gonioctena (B.) mauroi Cho & Borowiec, 2016 (after CHO & BOROWIEC 2016a), aedeagus, holotype (dorsal and lateral views). 12 – G. (B.) medvedevi Cho & Borowiec, 2016 (after CHO & BOROWIEC 2016a), aedeagus, holotype (dorsal and lateral views). Scale bars = 1.0 mm (except Fig. 10 = 0.5 mm).