Ptecticus
Creators: name: Zai-Hua, Yang
name: Xiao-Ming, Chen
name: Mao-Fa, Yang
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Stratiomyidae
Ptecticus

description: Key to species of Chinese Ptecticus (partly based on Rozkošný & Hauser, 2009)
1 Median occipital (post vertical) sclerite yellow............................................................... 2
- Median occipital sclerite black........................................................................... 7
2 Wing bicoloured or more or less darkened.................................................................. 3
- Wing hyaline......................................................................................... 5
3 Male cerci slender, gonostyli shifted to middle, slender and narrow............................... P. kerteszi de Meijere
- Male cerci broad, nearly triangular, gonostyli broader and in normal position...................................... 4
4 Darkening of wing apex reaching discal cell or nearly so; basal 1–4 abdominal segments usually ochre yellow, rest of abdomen wholly black........................................................................ P. melanurus (Walker)
- Darkening of wing apex reaching usually only middle or slightly more of distance between discal cell and wing margin; abdominal segments 3–5 usually with extensive dark spots...................................... P. aurifer (Walker)
5 Legs mostly black, tarsi yellowish brown, but basitarsus of hind tarsus black with yellowish brown apex...................................................................................................... P. brunescens Ôuchi
- Legs predominantly yellow.............................................................................. 6
6 Legs mostly yellow, but hind tibia black, hind tarsus white but basitarsus with black base; aedeagal complex thick............................................................................................ P. sinchangensis Ôuchi
- Legs mostly yellow, but tarsomeres 4 and 5th tarsomeres of fore and mid legs black; aedeagal complex slender with pointed apex............................................................................. .. P. elongates Yang et al.
7 R2+3 very short, mostly indistinct.......................................................... P. shirakii Nagatomi
- R2+3 long, distinctly visible............................................................................... 8
8 Hind legs completely black; male cerci unusually long...................................... P. japonicus (Thunberg)
- Hind legs at least partly yellow; male cerci not unusually long.................................................. 9
9 Postcubitus vein distinct............................................................................... 10
- Postcubitus vein not pigmented......................................................................... 12
10 Scutum mostly black or at least partly black................................................................ 11
- Scutum wholly brownish yellow; abdomen brownish yellow with black transverse spots.............. P. cingulatus Loew
11 Scutum with 3 broad black strips............................................................. P. tricolor Wulp
- Scutum wholly black................................................................... P. bicolor Yang et al.
12 Scutellum dark to black with yellow to brown margin........................................................ 13
- Scutellum yellow to brownish yellow.....................................................................15
13 Pleura wholly pale yellow, without any spots; hind basitarsus snow white but its outer side with black basal part.............................................................................................. P. brevispinus sp. nov.
- Pleura yellow, with large brownish to bluish-black spots; hind basitarsus snow white, darkened at most basally.......... 14
14 Genital capsule without posterolateral proceses................................... P. longispinus Rozkošný & Kovac
- Genital capsule with long posterolateral process on each side............................. P. longipennis (Wiedemann)
15 Lower half of frontal callus markedly darkened............................................ P. vulpianus (Enderlein)
- Frontal callus wholly yellow............................................................................ 16
16 Aedeagal complex reduced, ring-shaped proximally.......................................... .. P. australis Schiner
- Aedeagal complex of another shape...................................................................... 17
17 Genital capsule with broad bipartite medial process distally, gonostylus slender (Rozkošný & Hauser, 2001: Figs 6–7)................................................................................ .. P. srilankai Rozkošný & Hauser
- Medial process of genital capsule consisting of two slender structures, gonostylus stout, abruptly tapered before apical tip....................................................................................................... 18
18 Genital capsule transverse, broader than long, aedeagal complex only little sclerotised, flat, short and bifid apically, not swol- len proximally (Rozkošný & Hauser, 2009: Figs 9, 10)............................. P. fukienensis Rozkošný & Hauser
- Genital capsule longer than wide, aedeagal complex well sclerotised, bipartite and both parts gradually tapered and pointed apically, base of aedeagal complex swollen, almost round (Figs 10–12)......................... P. guangxiensis sp.nov.
description: Published as part of Zai-Hua, Yang, Xiao-Ming, Chen & Mao-Fa, Yang, 2015, Two new species and two new records of Ptecticus Loew (Diptera: Stratiomyidae: Sargiinae) from China, pp. 433-444 in Zootaxa 3964 (4) on page 434, DOI: 10.11646/zootaxa.3964.4.3, http://zenodo.org/record/235644