Ambrysus

Reynoso-Velasco, Daniel, Sites, Robert W. & Novelo-Gutiérrez, Rodolfo, 2016, The Ambrysus Stål (Heteroptera: Naucoridae: Cryphocricinae) of Mexico: Revision of the subgenus Syncollus La Rivers, Zootaxa 4126 (1) : -

publication ID

https://doi.org/ 10.11646/zootaxa.4126.1.2

publication LSID

lsid:zoobank.org:pub:36FDC9BB-39E8-471D-B767-211481D74D3A

DOI

https://doi.org/10.5281/zenodo.6085539

persistent identifier

https://treatment.plazi.org/id/89238788-841B-FFE0-FF08-FA5999D0FBCE

treatment provided by

Plazi

scientific name

Ambrysus
status

 

Key to Subgenera of Ambrysus View in CoL and Species of the Subgenus Syncollus of Mexico

Identification of species of Syncollus relies heavily on the condition of the male accessory genitalic process of tergum VI (AGP) and the female mediosternite VII (subgenital plate or SGP). As such, the abbreviations AGP and SGP are used throughout the following key and in the Annotated List of Species.

1. Male and female with mesal extensions of propleura closely appressed to posterior part of prosternum (prosternellum), thus propleura and anterior part of prosternum (probasisternum) at same level ( Fig. 1 View FIGURE 1 A). Male abdominal tergum V expanded posteriorly to cover abdominal segments VI–VIII ( Fig. 2 View FIGURE 2 A)............................ Ambrysus (Syncollus) La Rivers View in CoL ...2

1'. Male and female with mesal extensions of propleura detached from prosternellum, thus propleural extensions further ventrad than probasisternum ( Fig. 1 View FIGURE 1 B). Male abdominal tergum V slightly expanded posteriorly, with central notch, covering only basal part of terminal abdominal segments ( Fig. 2 View FIGURE 2 B)...................................... Ambrysus (Ambrysus) Stål View in CoL

2. Male and female with minute discontinuous tubercles and punctures on hemelytra. Male posterolateral corner of laterotergite V obtuse and not spinose; AGP short, curved to right at 45 degree angle, pointed distally ( Fig. 12 View FIGURE 12 B); medial lobes of tergum VIII (pseudoparameres) long, asymmetrical, with left pseudoparamere slightly longer and narrower ( Fig. 12 View FIGURE 12 C). Female with posterior margin of SGP broadly excavated with concavity twice as wide as deep, bounded by posterolateral corners ( Fig. 12 View FIGURE 12 F)................................................................................. .. Ambrysus xico View in CoL n. sp.

2'. Male and female with tubercles on hemelytra interconnected by continuous sclerotized ridges, giving a polygonal appearance surrounding punctures. Male posterolateral corner of laterotergite V acute; AGP long or short, curved to right at ≥ 45 degrees,

rounded distally; pseudoparameres long or short, generally symmetrical. Female with posterior margin of SGP not as above, but if central concavity twice as wide as deep then body length ≤ 6.8 mm or concavity occupies only 1/3 of posterior margin ( Fig. 5 View FIGURE 5 F)............................................................................................ 3 3. Male with AGP long, narrow, parallel-sided, not dilated or pointed distally ( Fig. 7 View FIGURE 7 B); pseudoparameres long, rounded, asymmetrical, with right pseudoparamere slightly narrower at apex ( Fig. 7 View FIGURE 7 C). Female with posterior margin of SGP highly variable (see variation section) but generally with a shallow concavity bearing a central notched lobe ( Fig. 7 View FIGURE 7 F)........................................................................................... Ambrysus circumcinctus Montandon View in CoL

3'. Male with AGP short, dilated distally; pseudoparameres generally short and symmetrical, but if long then pseudoparameres asymmetrical, with left pseudoparamere narrower transversely ( Fig. 9 View FIGURE 9 C). Female with posterior margin of SGP straight and bearing a small central concavity ( Fig. 5 View FIGURE 5 F), or narrow with an inverted V-shaped notch ( Fig. 9 View FIGURE 9 F), or large concavity twice as wide as deep ( Fig. 3 View FIGURE 3 F), or shallow concavity with two central pointed lobes ( Fig. 10 View FIGURE 10 F).............................. 4

4. Male with AGP curved to right at approximately 45 degree angle, mesal margin evenly curved ( Fig. 9 View FIGURE 9 B); pseudoparameres asymmetrical, with left pseudoparamere slightly narrower transversely and longer than right ( Fig. 9 View FIGURE 9 C). Female with SGP narrowed subapically (bottleneck-shape), posterior margin with inverted V-shaped notch ( Fig. 9 View FIGURE 9 F)..................................................................................................... Ambrysus pygmaeus La Rivers View in CoL

4'. Male with AGP curved to right at ≥ 45 degree angle, if 45 degrees then mesal margin roundedly angulate ( Fig. 10 View FIGURE 10 B); pseudoparameres almost symmetrical ( Figs. 3 View FIGURE 3 C, 5C, 10C). Female with posterior margin of SGP straight and bearing a small central concavity ( Fig. 5 View FIGURE 5 F), or large concavity twice as wide as deep ( Fig. 3 View FIGURE 3 F), or shallow concavity with two central pointed lobes ( Fig. 10 View FIGURE 10 F)............................................................................................ 5

5. Male with AGP curved to right at nearly 90 degree angle ( Fig. 3 View FIGURE 3 B); pseudoparameres with posterior margin straight ( Fig. 3 View FIGURE 3 C). Female with posterior margin of SGP with large central concavity almost twice as wide as deep ( Fig. 3 View FIGURE 3 F)..................................................................................... Ambrysus baeus Polhemus & Polhemus View in CoL

5'. Male with AGP curved to right at ≤ 60 degree angle; pseudoparameres with posterior margin straight ( Fig. 10 View FIGURE 10 C) or slightly convex ( Fig. 5 View FIGURE 5 C). Female with posterior margin of SGP straight and bearing a small central concavity ( Fig. 5 View FIGURE 5 F) or shallow concavity with two central pointed lobes ( Fig. 10 View FIGURE 10 F)............................................................. 6

6. Male with AGP curved to right at nearly 60 degree angle ( Fig. 5 View FIGURE 5 B); pseudoparameres with posterolateral corners roundedly angled ~45 degrees ( Fig. 5 View FIGURE 5 C). Female with posterior margin of SGP straight bearing a small central concavity ( Fig. 5 View FIGURE 5 F).................................................................................. Ambrysus chiapanecus View in CoL n. sp.

6'. Male with AGP curved to right at nearly 45 degree angle ( Fig. 10 View FIGURE 10 B); pseudoparameres with posterolateral corners narrowly angled nearly 90 degrees ( Fig. 10 View FIGURE 10 C). Female with posterior margin of SGP with shallow concavity with two central pointed lobes ( Fig. 10 View FIGURE 10 F).................................................................. Ambrysus totonacus View in CoL n. sp.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Naucoridae

SubFamily

Cryphocricinae

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF