Chrysotus longipalpus Aldrich 1896
Creators: name: Runyon, Justin B.
name: Capellari, Renato S.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Chrysotus
Chrysotus longipalpus

description: Key to males of the Chrysotus longipalpus species group (modified from Capellari 2015)
1 Eyes nearly contiguous below antennae; antennal postpedicel subtriangular; palpus variously enlarged. First tarsomere I with ventroapical swelling; tibia III with row of anterior to anterodorsal setae; femur III with 2 rows of ventral setae on basal half … Chrysotus longipalpus species group..................................................................... 2
- Not with the above combination of characters................................................other species groups
2 Palpus clearly divided into an enlarged basal part and a strap-like apical projection after abrupt tapering................. 3
- Palpus not clearly divided into two parts................................................................... 7
3 Palpus brownish, thick (Capellari 2015, fig. 1f); coxa I light brown, yellow at apex, with brownish setae on anterior surface (Belize).......................................................................... C. pachystoma Capellari
- Palpus mostly white or yellowish, thin; coxa I entirely yellow, with whitish to yellow setae on anterior surface............ 4
4 Basal part of palpus densely covered with brownish setae; distal part slightly tapered towards apex, without apical lamella.. 5
- Basal part of palpus covered sparsely with brownish setae; distal part strip-like, with apical lamella.................... 6
5 Palpus with silvery tip (Capellari 2015, fig. 1a); apical 1/3–1/4 of femur III brown.................. C. coquitos Capellari
- Palpus with brown tip (Fig. 3); femur III entirely yellow...................................... C. mccreadiei sp. nov.
6 Apex of palpus narrowly oblong, slightly pointed and white (Capellari 2015, fig. 1d)................ C. miripalpus Parent
- Apex of palpus rounded and black (Figs 4a, b, 5).............................................. C. keyensis sp. nov.
7 Palpus entirely bright silvery, relatively short (length ± 2x width) and often truncate apically; nearly bare of hairs or setae (as in Figs 1, 2)............................................................................................ 8
- Palpus never entirely bright silvery, but often bright yellowish; relatively long (length> 2.5x width), either uniformly narrow or only gradually tapering towards apex; with hairs or setae scattered over much of surface.......................... 10
8 Arista-like stylus slightly broadened, feathered, and white at apex (Fig. 1)........................ C. plumarista sp. nov.
- Arista unmodified..................................................................................... 9
9 Palpus oblong (Capellari 2015, fig. 1b); antenna entirely brown; coxae and pleura brown............ C. crosbyi Van Duzee
- Palpus distinctly truncate apically and pointed laterally (Fig 2); antenna with first flagellomere yellow ventrally; coxae and pleura mostly yellow..................................................................... C. mystax sp. nov.
10 Palpus uniformly narrow and straight..................................................................... 11
- Palpus tapered towards apex............................................................................ 12
11 Antenna brown; palpus brown with silvery tip (Capellari 2015, fig. 1h); coxa I brown, femur I yellow...................................................................................................... C. zumbadoi Capellari
- Antenna yellow; palpus yellow, bright silvery (Capellari 2015, fig. 1g); coxa and femur I whitish yellow.................................................................................................. C. xiphostoma Robinson
12 Palpus sub-triangular with rounded apex, entirely yellow (Capellari 2015, fig. 1c)................ C. longipalpus Aldrich
- Palpus narrow throughout, pointed, basal half yellow with apical half brownish and silvery pruinose (Capellari 2015, fig. 1e)............................................................................... C. neopedionomus Capellari
description: Published as part of Runyon, Justin B. & Capellari, Renato S., 2018, Palpi aplenty: new species in the Chrysotus longipalpus species group (Diptera: Dolichopodidae), pp. 579-585 in Zootaxa 4399 (4) on page 580, DOI: 10.11646/zootaxa.4399.4.8, http://zenodo.org/record/1206904