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Figures 23-28 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 23-28 - Male genitalia. 23–25 Grouvellinus orbiculatus sp. n., holotype 26–28 Grouvellinus sagittatus sp. n., holotype 23, 26 in ventral view 24, 27 in dorsal view; 25, 28 in lateral view. Scale bar: 0.2 mm.

Figures 21-22 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 21-22 - Grouvellinus carus Hinton, 1941, holotype. 21 habitus, dorsal view 22 lateral view. Photograph by Keita Matsumoto (London).

Figures 13-16 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 13-16 - Habitus. 13–14 Grouvellinus pilosus Jeng & Yang, 1998, holotype 15–16 Grouvellinus sinensis Grouvelle, 1906, paralectotype 13, 15 dorsal view 14, 16 ventral view. Scale bar: 1 mm. Photograph by Dongju Bian.

Figures 5-8 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 5-8 - Habitus. 5–6 Grouvellinus babai babai Nomura, 1963 7–8 Grouvellinus hydropetricus Jeng & Yang, 1998, paratype 5, 7 dorsal view 6, 8 ventral view. Scale bar: 1 mm. Photograph by Dongju Bian.

Figures 1-4 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 1-4 - Habitus. 1–2 Grouvellinus orbiculatus sp. n., holotype 3–4 Grouvellinus sagittatus sp. n., holotype 1, 3 dorsal view 2, 4 ventral view. Scale bar: 1 mm. Photograph by Dongju Bian.

Figures 9-12 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 9-12 - Habitus. 9–10 Grouvellinus montanus Jeng & Yang, 1998, paratype 11–12 Grouvellinus nepalensis Delève, 1970 9, 11 dorsal view 10, 12 ventral view. Scale bar: 1 mm. Photograph by Dongju Bian.

Figures 17-20 from: Dongju B, Sun H (2016) A key to Grouvellinus Champion, 1923 from mainland China with descriptions of two new species (Coleoptera, Elmidae). ZooKeys 623: 89-104. https://doi.org/10.3897/zookeys.623.9610

Figures 17-20 - Habitus. 17–18 Grouvellinus hercules Jäch, 1984 19–20 Grouvellinus tibetanus Jäch, 1984, paratype 17, 19 dorsal view 18, 20 ventral view. Scale bar: 1 mm. Photograph by Dongju Bian.

Figures 9-13 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 9-13 Volesusnigripennis, male 9 head and left antenna, dorsal view 10 left antenna, ventral view 11 head and fore lobe of pronotum, lateral view (black arrow points to prosternal process; first and second visible labial segments indicated by white arrows) 12, 13 ventral view 12 head, except antenniferous, and most part of prosternum (arrows point to first and second visible labial segments) 13 head, except distal half of second visible labial segment. (1 first 2 second visible labial segments). Scale bars: 1.0 mm (9–11); 0.5 mm (12, 13).

Figures 53-57 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 53-57 Volesusnigripennis, male genitalia 53, 55–57 dorsal view 54 lateral view 53, 54 dorsal phallothecal sclerite (dps). (apd apex of pedicel; fle flat lateral expansion). 55 subapical enlarged portion of dorsal phallothecal sclerite (dps) and membranous lobe on endosoma (mle), indicated by arrows 56, 57 endosoma portions 56 subapical 57 apical. (adps apex of dorsal phallothecal sclerite; ars area with rugosities more sclerotized; mfe median subrounded flat expansion; lsl longitudinal sclerotized line; lte lateral tubular short expansion; sbp subapical process; stp flat, somewhat sclerotized, striated processes). Scale bar: 0.2 mm.

Figures 26-28 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 26-28 Volesusnigripennis, male, dorsal view 26 distal portion of pronotum, scutellum, hemelytra and connexivum, arrow points to a small additional cell at approximately apical fourth of the cubital vein 27 left hind wing 28 distal portion of thorax and abdomen (wings moved away). Scale bar: 2.0 mm.

Figures 49-52 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 49-52 Volesusnigripennis, male genitalia, phallus 49, 50 not inflated 49 ventral view 50 dorsal view 51, 52 inflated 51 lateral view 52 laterodorsal view. (adps apex of dorsal phallothecal sclerite; bpa basal plate arm; bpb basal plate bridge; dps dorsal phallothecal sclerite; fle flat lateral expansion; loa lateral oval area; lte lateral tubular short expansion; mle membranous lobe on endosoma; pd pedicel; sbp subapical process). Scale bar: 0.5 mm.

Figures 45-48 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 45-48 Volesusnigripennis, male genitalia 45, 46 apical portion of paramere, lateral view 47 apical portion of pygophore, anterior view (setae omitted). (mpp median process of pygophore) 48 phallus not inflated, lateral view. (bpa basal plate arm; dps dorsal phallothecal sclerite; loa lateral oval area; mle membranous lobe on endosoma; pd pedicel). Scale bars: 0.2 mm (45); 0.1 mm (46); 0.5 mm (47, 48).

Figures 29-34 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 29-34 Volesusnigripennis, male 29–33 dorsal view 29 process of scutellum, median portions of tergites I–II and basal half of tergite III, arrow points to midlongitudinal keel of tergite II 30–31 mediolateral portions of tergites I–III 30 arrow points to first (dorsal) abdominal spiracle 31 arrow points to the dag on tergite IV 32 lateral portions of tergites III (distal part), IV–V 33 mediolateral portions of distal part of tergite IV, tergite V and basal part of tergite VI, arrows point to the dag on tergites V and VI 34 abdominal segments III-IV, lateral view, arrows point to the vertical sclerite of connexivum. (dag scar of dorsal abdominal gland opening). Scale bar: 1.0 mm.

Figures 40-44 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 40-44 Volesusnigripennis, male 40 distal half of segment VIII and genital capsule, dorsal view (d dorsal portion of segment VIII; pct proctiger; pdm posterior dorsal margin of pygophore; psp medial prolongation of the socket of the insertion of the paramere; spi spiracle of segment VIII) 41 segment VIII, ventral view 42, 43 genital capsule, lateral view 44 pygophore, ventral view. (mpp median process of pygophore; pa paramere; pm posterior margin of pygophore; sp socket of the insertion of the paramere. Scale bars: 0.5 mm (40, 41); 1.0 mm (42–44).

Figures 14-19 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 14-19 Volesusnigripennis, male, dorsal view 14 head, pronotum, scutellum and basal portions of hemelytra and connexivum 15–18 pronotum 15 median portion 16–17 fore lobe and basal portion of hind lobe 17 left side and midline 18 lateral right portion, including humeral angle 19 scutellum. Scale bars: 2.0 mm (14); 0.5 mm (15–17, 19); 0.3 mm (18).

Figures 35-39 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 35-39 Volesusnigripennis, male 35 abdomen, lateroventral view 36–39 ventral view 36 hind coxa, median portions of sternites II–III and basal portion of sternite IV 37 median portion of distal margin of sternite III, sternites IV–V and anterior margin of sternite VI 38 mediolateral portions of distal half of sternite III and sternites IV–V, except lateroposterior angle of the latter 39 segment VIII and genital capsule detached from abdomen. Scale bars: 2.0 mm (35); 1.0 mm (36–39).

Figures 4-8 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 4-8 Volesusnigripennis, male 4–5 dorsal view 6–8 head 6–7 dorsal view 8 except distal half of second visible labial segment, lateral view. Scale bars: 5.0 mm (4–5); 1.0 mm (6); 0.5 mm (7–8).

Figures 20-25 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 20-25 Volesusnigripennis, male 20–23 ventral view 20 head and thorax 21 prothorax, arrow points to prosternal process 22 prothorax and mesosternum 23 metasternum, middle and hind coxae, and median portion of base of abdomen 24, 25 apices of tibiae, arrow points to spongy fossa 24 fore tibia, ventral view 24 middle tibia, lateral view. Scale bars: 1.0 mm (20, 23–25) 0.5 mm (21, 22).

Figures 1-3 from: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153

Figures 1-3 Volesusnigripennis, female, holotype deposited in NRM, catalog number NHRS-GULI000000089, photographed by Gunvi Lindberg, © 2018 Naturhistoriska riksmuseet. Made available by the Swedish Museum of Natural History under Creative Commons Attribution 4.0 International Public License, CC-BY 4.0, https://creativecommons.org/licenses/by/4.0/legalcode. 1 dorsal view 2 ventral view 3 labels. Scale bar: 10 mm (1).