Panorpa davidi group Esben-Petersen, 1921

Li, Ning, Wang, Ji-Shen & Hua, Bao-Zhen, 2021, Morphological phylogenetic analyses and taxonomic revision of the Panorpa davidi group (Mecoptera: Panorpidae), Arthropod Systematics & amp; Phylogeny 79, pp. 309-342 : 309

Panorpa davidi group Esben-Petersen, 1921

Panorpa davidi group Esben-Petersen, 1921: 14; Carpenter, 1938: 268; Cheng, 1957: 5.

Emended diagnosis.

The Panorpa davidi group can be differentiated from other groups of Panorpa by the following features: in males, (1) flat notal organ on posterior margin of T3 covering acute postnotal organ on anterior portion of T4; (2) A6 cylindrical, lacking anal horns, mostly projected and setose on dorsal apex; (3) gonostylus with obtuse triangular median tooth and large basal cup on inner margin, (4) elongated dorsal valves of aedeagus with enlarged dorsal processes; and (5) parameres simple, unfurcated, elongated, mostly twisted and crossed mesally; in females, (6) medigynium elongated, broad, with posterior arms distinctly shorter than main plate; and (7) paired lateral basal plates mostly well-developed.

Distribution.

Species of the P. davidi group are distributed in the mountainous regions of China, mainly in the Hengduan, Qinling-Bashan, Dalou, Dabie and Taihang mountains (Fig. 1 ).

Remarks.

The P. davidi group was proposed by Esben-Petersen (1921) to contain P. sibirica and P. davidi . Martynova (1957) later transferred P. sibirica to the R. communis group. According to Carpenter (1938) and Cheng (1957), this species group consisted of 19 Chinese species of Panorpa without anal horn on the posterior margin of T6 in males. Of these, Panorpa tincta Navás, 1931 was transferred to Sinopanorpa ( Cai et al. 2008), and 12 species that differ remarkably from P. davidi are herein removed from this group. In this paper, 21 species are recognized in the newly defined P. davidi group, including 17 known species and four new species.

Figures

Figure 1. Main distribution range of the Panorpa davidi group. A. Hengduan Mountains. B. Qinling-Bashan Mountains. C. Dalou Mountains. D. Dabie Mountains. E. Taihang Mountains.