Napialus Chu & Wang, 1985

Li, Weichun & Wei, Hongyi, 2014, Notes on the genus Napialus Chu & Wang (Lepidoptera: Hepialidae), with description of a new species from China, Zootaxa 3793 (3), pp. 387-392 : 388

Napialus Chu & Wang, 1985

Napialus Chu & Wang, 1985a: 130 . Type species: Napialus hunanensis Chu & Wang, 1985 , by original designation.

Generic characters. Labial palpus with three segments. Haustellum absent. Antenna ( Fig. 1 ) with scape and pedicel larger than flagellar articles; flagellar articles longer than wide, dark posteriorly, and suffused with setae near anterior tip. Wings ( Fig. 2 ) with humeral vein present in both wings; Sc reaching distal two-fifths to one-third of costal margin; R1 and R2 apical; R2 with R3 stalked, forked distant one-fifth to one-third length of wing from termen; R2+R3 and R4 stalked, then stalked with R5; cross-veins on forewing R–M1, M1–M2, M2–M3 present, and cross-veins on hindwing M–Cu and CuA1–CuA2 present. Legs ( Figs. 3–7 ) without epiphysis; femurs of foreleg and metaleg more or less longer than tibiae, femur of mesoleg conspicuously longer than tibia; tarsi five-segmented, first segment much longer than second segment, median three segments with nearly equal length, and fifth segment distinctively longer than fourth segment; tarsal claws with an arolium. Male genitalia with two well-developed tergal lobes, pseudotegumen developed strongly and posteriorly with a pair of strongly sclerotized pseudoteguminal processes.

Distribution. South of 30°N in China ( Fig. 13 ).

Figures

FIGURE 13. Map showing distribution where Napialus species (■ N. hunanensis, ▲ N. chongqingensis, ▼ N. chenzhouensis, ◄ N. jiangxiensis, N. spinosus) are recorded (within the scope of the black dot line), potential distributed ranges in China ► (within the scope of the pale purple dash line) and mean minimum temperature of the coldest month (January) of the year.

FIGURES 1 – 7. Napialus chenzhouensis Chu & Wang: 1, Antenna dorsal view; 2, Wings: 2 a, venation of forewing; 2 b, venation of hindwing; 3 – 7, Legs: 3, foreleg; 4, mesoleg; 5, metaleg; 6, distitarsus of metathoracal leg dorsal view; 7, distitarsus of metathoracal leg ventral view.