Eupyrochroa Blair, 1914

Gao, Qi, Young, Daniel K., Zhan, Zhi-Hong, Cheng, Hai-Yun & Pan, Zhao, 2024, Revision of Eupyrochroa Blair, 1914 (Coleoptera: Pyrochroidae) based on morphological comparison and molecular phylogenetics, Zootaxa 5406 (2), pp. 238-252 : 243

Genus Eupyrochroa Blair, 1914

Eupyrochroa Blair, 1914: 316 . Type species: Pyrochroa insignita Fairmaire, 1894 , by subsequent designation ( Pollock & Young 2008: 49).

Diagnosis. Adults of Eupyrochroa are most similar to those of Pyrochroa spp. but can be easily distinguished by the larger body size, the head with strongly produced genae ( Fig. 3A–C ) (genae rounded in Pyrochroa spp. ), and lateral aspects of the pronotum strongly angulate sub-basally ( Fig.1 A–F ) (rounded in Pyrochroa spp. ). However, these two genera do not exhibit distinct differences in several features (e.g., the coloration of the head, pronotum, and scutellum, and structure of the male genitalia) (see Discussion, below).

After comparison with the larval descriptions of the three Pyrochroa species from Europe ( Molfini et al. 2021, 2022), the larva of Eupyrochroa is similar to that of Pyrochroa . The lateral lobes of urogomphal plate are well-developed, rounded, the urogomphal plate possesses lateral teeth on the outside and two urogomphal pits, the urogomphi long, slender, straight, and subparallel, a weakly developed parabasal ridge is associated with abdominal terga I and VIII. Unlike Pyrochroa larvae ( Molfini et al. 2022), the urogomphal plate of E. insignita is also toothed on the inside.

Distribution. China, Laos (New Country Record, see Other materials, below).

Figures

FIGURE 1. Pronotum and scutellum of the genus Eupyrochroa, dorsal view. A, D: E. insignita; B, C, E, F: E. limbaticollis; A–C: male; D–F: female. Scale bar: 1 mm.

FIGURE 3. Adult of Eupyrochroa insignita. A. habitus, male, dorsal view; B–C. head, dorsal view: B. male; C. female; D–E. antenna, left: D. male; E. female; F–G. tegmen: F. dorsal view; G. lateral view; H–I. penis: H. dorsal view; I. lateral view. Scale bars: 5 mm (A), 1 mm (others).