Pectocera Hope, 1842

Liu, Zhen & Jiang, Shi-Hong, 2021, The genus Pectocera Hope, 1842 (Coleoptera, Elateridae, Oxynopterinae) in China, with description of two new species and one new record, Journal of Natural History 55 (3 - 4), pp. 247-270 : 249-250

Key to the male species of Pectocera Hope from China

1. Elytra without macula............................................................................................................................. 1

– Elytra with marmoreal macula............................................................................................................. 3

2. Elytra with obvious striae, interstriae elevated; body smaller, body length 15 mm .......... ................................................................................................................. P. brevicollis Candèze, 1878

– Striae almost absent on elytra, but some vestige visible near latero-basal parts; body bigger, body length 22.5–25.1 mm ....................... ....................... P. kobayashii Kishii, 1996

3. Aedeagus with parameres reaching a little beyond penis; antenna longer, exceeding apex of hind angle of pronotum by four antennomeres P. sechuana Schimmel, 2003

– Aedeagus with penis reaching beyond parameres..................................................................... 4

4. Hind angle of pronotum with vestige carina and basal groove aside..................................... .................................................................................................................... P. kucerai Schimmel, 2006

– Hind angle without any carina and basal groove aside........................................................... 5

5. Body big, body length 32 mm; each lateral area on pronotum provided with two depressions, one well marked and situated at one-third from the anterior margin, and the other weaker and situated at one-fourth from the hind margin............................. ................................................................................................................. P. yaeyamana Suzuki, 1976

– Body smaller, body length less than 30 mm; no depression on pronotum as above.. 6

6. Male antenna shorter, not reaching middle part of elytra....................................................... 7

– Male antenna longer, reaching or beyond middle part of elytra....................................... 11

7. Sternite VII truncate at apex................................................................................................................. 8

– Sternite VII more or less round at apex............................................................................................ 9

8. Scutellum straight anteriorly; body brown; pronotum with a broad medio-longitudinal depression.............................................. .............................................. P. formosanna Kishii, 1990

– Scutellum strongly emarginate anteriorly; body reddish brown; pronotum without medio-longitudinal depression...................................... P. truncata Liu and Jiang sp. nov.

9. Body smaller, male length 24.3 mm; body dark brown-black; pronotum with a broad and deep medial furrow....................... ....................... P. attenuator Liu and Jiang sp. nov.

– Body bigger, male length 27.2–27.8 mm; body reddish brown; pronotum without furrow or with a narrow sulcus medially...................................................................................... 10

10. Widest part of body at humeral angle; pronotum trapezoid shape, strongly narrowed anteriorly.......................................................................................... P. fleutiauxi Schimmel, 1997

– Widest part of body at apical third of elytra; pronotum square shape, indistinctly narrowed anteriorly........................................... ........................................... P. babai Kishii, 1990

11. Flabellum of 3rd antennomere about 3 times longer than itself..................................... 12

– Flabellum of 3rd antennomere 5.0–6.0 times longer than itself....................................... 13

12. Apical antennomere with a distinct attenuation; striate on elytra more obvious; pronotum strongly sinuous on anterior edge....... ....... P. tonkinensis Fleutiaux, 1918

– Apical antennomere without attenuation; striate on elytra less obvious; pronotum straight on anterior edge.......................................................................... P. cantori Hope, 1842

13. Lateral margins of pronotum curved outwards, hind angle medianly divergent; lateral margin of apico-lateral expansion of paramere straight.............................................................. ................................................................................................... P. jiangxiana Kishii et Jiang, 1994

– Lateral margins of pronotum not curved outwards, hind angle strongly divergent; lateral margin of apico-lateral expansion of paramere more or less curved or sinuate............................................................................................................................................................... 14

14. Labrum simply projected medianly; medio-longitudinal canaliculation on frons indistinct and shallower............................................................................................ P. fortune ( Candeze, 1873)

– Labrum with anterior crenation conspicuous; medio-longitudinal canaliculation on frons more distinct and deeper.................................................................. P. hige Kishii, 1993