Prismognathus
Creators: name: Huang, Hao
name: Chen, Chang-Chin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Lucanidae
Prismognathus

description: Key to the females of Prismognathus and Cladophyllus from China (using external characters only)
The genitalic character states do not vary among species in accordance with the external morphological characters; therefore it is too complicated to make a key using both external and genitalic characters. The females are individually variable for most species and only slightly different among species; some characters may be blunt. Therefore, to give a better knowledge of the differences, two keys have been made using external characters and genitalic characters respectively. Both keys should be used for a reliable identification of female specimens.
1 Width of antennomere 9 approximately equal to length of antennomeres 2–6......................... 2 (Cladophyllus)
- Width of antennomere 9 markedly shorter than antennomeres 2–6................................ 4 (Prismognathus)
2 Mandible with inner tooth obsolete. Antennomere 10 strongly excavated at apex. Punctures on head and pronotum markedly small.............................................................................. C. oberthuri Houlbert
- Mandible with inner tooth well defined. Antennomere 10 weakly excavated at apex. Punctures on head and pronotum markedly large........................................................................................ 3
3 Width of antennomere 7 approximately half the width of antennomere 8............................ C. nobuhikoi Ikeda
- Width of antennomere 7 less than half the width of antennomere 8............................. C. bousqueti Boucher
4 Lateral angles of pronotum protruding..................................................................... 5
- Lateral angles of pronotum not protruding, at most sharply angled.............................................. 7
5 Both body surface black. Femora black..................................................... arcuatus (Houlbert)
- Both body surface reddish brown. Femora light yellowish brown or reddish brown.................................. 6
6 Mandible with inner tooth obsolete. Lateral angle of the pronotum protruding with a right angle........ P. sukkitorum Nagai
- Mandible with inner tooth well defined. Lateral angle of the pronotum protruding with an acute angle................................................................................................... P. haojiani Huang & Chen
7 Metasternum with a visible pubescence........................................................ P. siniaevi Ikeda
- Metasternum without a visible pubescence................................................................. 8
8 Postocular margin longer than or as long as eye.......................... P. formosanus Nagel and P. p il u e n s i s Sakaino
- Postocular margin shorter than eye....................................................................... 9
9 Tip of canthus usually reaching the outer limit of eye.................................... P. prossi Bartolozzi & Wan
- Tip of canthus markedly inside of the outer limit of eye...................................................... 10
10 Posterior part of canthus nearly perpendicular to lateral margin of eye. Body black................ P. shani Huang & Chen
- Posterior part of canthus not perpendicular to lateral margin of eye. Body black or brown.......................... 11
11 Restricted to northeast China ........................................................ P. dauricus (Motschulsky)
- Not present in northeast China .......................................................................... 12
12 Body black.......................................................................................... 13
- Body more or less brown.............................................................................. 15
13 Restricted to Yunnan and southern Sichuan................................................................ 14
- Not present in Yunnan and southern Sichuan.................................................. P. davidis Deyrolle
14 Tip of canthus narrower and sharper. Restricted to Gaoligongshan.............................. P. nigricolor Boucher
- Tip of canthus wider and blunter. Not present in Gaoligongshan............................. P. alessandrae Bartolozzi
15 Pronotum more transverse, with lateral margins in front of lateral angles usually strongly convergent anteriorly......... 16
- Pronotum less transverse, with lateral margins in front of lateral angles usually weakly convergent anteriorly........................................................... P. davidis Deyrolle, P. triapicalis (Houlbert) and P. sinensis Bomans
16 Restricted to Vietnam and southern Yunnan............................. P. kanghianus kanghianus (Didier & Séguy)
- Not present in Vietnam and southern Yunnan.............................................. P. klapperichi Bomans
description: Published as part of Huang, Hao & Chen, Chang-Chin, 2012, A review of the genera Prismognathus Motschulsky and Cladophyllus Houlbert (Coleoptera: Scarabaeoidea: Lucanidae) from China, with the description of two new species, pp. 1-36 in Zootaxa 3255 on page 19, DOI: 10.5281/zenodo.280626