Pentatominae,

Barros, Lurdiana D., Paim, Marcelo R., Krein, Verônica, Carabajal, Victor, Brandão, Marcela N., Bernardes, Paula De O. & Lindner, Mariana F., 2021, Illustrated guide to Pentatominae (Hemiptera: Pentatomidae) species associated with the four main grain crops in Rio Grande do Sul state, Brazil, Zootaxa 4958 (1), pp. 430-478: 433-435

publication ID

https://doi.org/10.11646/zootaxa.4958.1.27

publication LSID

lsid:zoobank.org:pub:303D300E-C17B-407C-A63B-53F906C5D825

DOI

http://doi.org/10.5281/zenodo.4711017

persistent identifier

http://treatment.plazi.org/id/F55187E5-FFA7-FF96-FF36-9CDD22EE7A4C

treatment provided by

Plazi

scientific name

Pentatominae
status

 

Key to the species of Pentatominae  on grain crops of economic importance in Rio Grande do Sul

(including only the species listed in this work)

1 Abdominal sternite 3 with process ( Fig. 21View FIGURES 20–23)................................................................ 2

- Abdominal sternite 3 without process.................................................................... 12

2 Mandibular plates surpassing the clypeus and acute apically ( Fig. 22View FIGURES 20–23)........................... Arvelius albopunctatus 

- Mandibular plates subequal to clypeus and rounded apically ( Fig. 102View FIGURES 100–103)........................................... 3

3 Living specimens yellowish castaneous to green, pronotum with a reddish-brown trans-humeral band ( Figs 100, 102View FIGURES 100–103)........................................................................................... Piezodorus guildinii 

- Living specimens green, pronotum without reddish-brown trans-humeral band ( Fig. 92View FIGURES 92–95)............................. 4

4 Abdominal spine short, rounded, not reaching coxae ( Fig. 93View FIGURES 92–95); spiracles with juxtaposed green maculae, without callosity ( Fig. 94View FIGURES 92–95, black arrow).......................................................................... Nezara viridula 

- Abdominal spine variable in size, rounded or acute, spiracles with juxtaposed maculae, concolourous or not, and with a callosity............................................................................................. 5

5 Humeral angles produced into a spine ( Figs 24View FIGURES 24–26, 42View FIGURES 41–43).......................................................... 6

- Humeral angles not produced ( Figs 30View FIGURES 30–33, 48View FIGURES 47–49)................................................................. 7

6 Lateral margins of body yellowish, apical portion of head broad ( Fig. 25View FIGURES 24–26)........................... Chinavia armigera 

- Lateral margins of body reddish to orange, apical portion of head narrow ( Fig. 42View FIGURES 41–43)................. Chinavia nigridorsata 

7 Abdominal spine surpassing the mesocoxae ( Fig. 45View FIGURES 44–46)........................................... Chinavia obstinata 

- Abdominal spine not reaching the mesocoxae............................................................... 8

8 Abdominal spine reaching the anterior margin of metacoxae ( Fig. 35View FIGURES 34–36)............................... Chinavia herbida 

- Abdominal spine not reaching the anterior margin of metacocoxae.............................................. 9

9 Cicatrices of pronotum and basal angles of scutellum black ( Fig. 30View FIGURES 30–33)........................................... 10

- Cicatrices of pronotum and basal angles of scutellum concolorous with remaining dorsal surface, never black........... 11

10 Antennae black ( Fig. 30View FIGURES 30–33), coxae, trochanters, apices of femora and tibiae red ( Fig. 32View FIGURES 30–33)............. Chinavia erythrocnemis 

- Antennae and legs green ( Fig. 39View FIGURES 37–40)....................................................... Chinavia impicticornis 

11 Lateral margin of body broadly red to orange red ( Figs 47, 48View FIGURES 47–49), posterior margin of connexivum black ( Fig. 47View FIGURES 47–49).................................................................................................. Chinavia pengue 

- Lateral margin of body narrowly light red ( Figs 27, 28View FIGURES 27–29), posterior margin of connexivum concolourous with dorsal surface ( Fig. 27View FIGURES 27–29)..................................................................................... Chinavia aseada 

12 Live specimens green; distal apex of all femora bearing a strong spine ( Fig. 79View FIGURES 78–81, black arrow)........................ 13

- Live specimens pale yellow to black; distal apex of all femora unarmed......................................... 14

13 Humeral angles strongly developed, directed laterally, reddish ( Fig. 80View FIGURES 78–81); corium with multiple pale callosities, irregularly distributed ( Fig. 78View FIGURES 78–81)......................................................................... Loxa deducta 

- Humeral angles slightly developed, directed anteriorly, black ( Fig. 83View FIGURES 82–84); each corium with a single pale callosity ( Fig. 82View FIGURES 82–84)........................................................................................ Mayrinia curvidens 

14 Inferior surface of all femora with small tubercles bearing setae ( Fig. 18View FIGURES 16–19)........................................ 15

- Inferior surface of all femora lacking tubercles............................................................. 19

15 Anterolateral margins of pronotum straight ( Fig. 16View FIGURES 16–19); corium banded, not punctate and with minute teeth on lateral margin ( Fig. 17View FIGURES 16–19); femoral tubercles arranged in two rows................................................... Agroecus griseus 

- Anterolateral margins of pronotum concave ( Figs 13View FIGURES 13–15, 57View FIGURES 56–58); corium without bands or minute teeth on lateral margin, not punctate; femoral tubercles arranged irregularly.................................................................... 16

16 Humeral angles quadrate ( Fig. 13View FIGURES 13–15); apex of scutellum immaculate............................... Adustonotus irroratus 

- Humeral angles acute ( Figs 57View FIGURES 56–58, 61View FIGURES 59–62, 63View FIGURES 63–64); apex of scutellum maculate............................................ 17

17 Anterolateral margins of pronotum serrate ( Fig. 57View FIGURES 56–58); legs without black spots; membrane of hemelytra with linear veins ( Fig. 56View FIGURES 56–58).......................................................................... Euschistus (Euschistus) heros 

- Anterolateral margins of pronotum with spaced denticles ( Figs 61View FIGURES 59–62, 63View FIGURES 63–64); legs with black spots ( Fig. 59View FIGURES 59–62); membrane of hemelytra with reticulated veins ( Fig. 60View FIGURES 59–62).......................................................................... 18

18 Dorsal surface of body wrinkled; humeral angles rounded apically and directed anterolaterally ( Fig. 61View FIGURES 59–62); conspicuous macule on apex of scutellum ( Fig. 59View FIGURES 59–62)................................................... Euschistus (Lycipta) picticornis 

- Dorsal surface of body not wrinkled; humeral angles acute apically and directed laterally ( Fig. 63View FIGURES 63–64); inconspicuous macule on apex of scutellum ( Fig. 63View FIGURES 63–64)..................................................... Euschistus (Lycipta) triangulator 

19 Basal angles of scutellum not foveate ( Fig. 7View FIGURES 6–9).............................................................. 20

- Basal angles of scutellum foveate....................................................................... 21

20 Anterolateral margins of pronotum convex ( Figs 6, 8View FIGURES 6–9); basal angles of scutellum not black ( Fig. 7View FIGURES 6–9); mandibular plates subequal to clypeus and divergent apically ( Fig. 8View FIGURES 6–9)................................................... Acledra bonariensis 

- Anterolateral margins of pronotum straight to slightly concave ( Figs 10, 11View FIGURES 10–12); basal angles of scutellum black ( Figs 10, 11View FIGURES 10–12); mandibular plates longer than clypeus and convergent apically ( Fig. 11View FIGURES 10–12).............................. Acledra fraterna 

21 First labiomere surpassing the bucculae ( Fig. 86View FIGURES 85–87, black arrow)................................................. 22

- First labiomere between the bucculae ( Fig. 76View FIGURES 75–77, black arrow).................................................. 23

22 Body color castaneous; humeral angles black, slightly produced and obtuse apically ( Fig. 85View FIGURES 85–87); scutellum with a small pale yellow callosity on each angle, the callosities on basal angles not extending to lateral margins ( Fig. 85View FIGURES 85–87). Mormidea notulifera 

- Body color black; humeral angles variable, from a small round projection ( Fig. 90View FIGURES 88–91) to an acute spine apically ( Fig. 89View FIGURES 88–91); scutellum with a pale yellow callosity on each angle, the ones on basal angles extending through half of lateral margins ( Fig. 88View FIGURES 88–91).......................................................................................... Mormidea  v-luteum

23 Anterolateral margins of pronotum straight ( Fig. 75View FIGURES 75–77)........................................... Hypatropis inermis 

- Anterolateral margins of pronotum concave ( Fig. 51View FIGURES 50–52)........................................................ 24

24 Apex of mandibular plates acute ( Figs 51View FIGURES 50–52, 53View FIGURES 53–55).............................................................. 25

- Apex of mandibular plates rounded ( Figs 96View FIGURES 96–97, 98View FIGURES 98–99)........................................................... 26

25 Humeral angles concolorous with pronotum ( Figs 50, 51View FIGURES 50–52); scutellum without pale line on apical margin ( Fig. 50View FIGURES 50–52)............................................................................................... Diceraeus furcatus 

- Humeral angles black ( Fig. 53View FIGURES 53–55); scutellum with pale line along apical margin ( Fig. 53View FIGURES 53–55)............ Diceraeus melacanthus 

26 Mandibular plates subequal to clypeus ( Figs 98View FIGURES 98–99, 105View FIGURES 104–106); antennomere 2 longer than antennomere 1 ( Fig. 104View FIGURES 104–106)............ 27

- Mandibular plates smaller than clypeus ( Figs 66View FIGURES 65–68, 73View FIGURES 72–74); antennomere 2 shorter than antennomere 1 ( Fig. 110View FIGURES 109–112)............ 30

27 Body slender; scutellum with large pale callosities ( Figs 96View FIGURES 96–97, 98View FIGURES 98–99)............................................... 28

- Body oval; scutellum without callosities.................................................................. 29

28 Apex of radial vein of corium with a large pale yellow callosity; body ferruginous to dark castaneous, with one pair of yellow callosities on pronotum ( Fig. 96View FIGURES 96–97)............................................................ Oebalus poecilus 

- Apex of radial vein of corium without callosity; body castaneous, with one pair of small yellow spots, not callosities, on pronotum ( Fig. 98View FIGURES 98–99).................................................................. Oebalus ypsilongriseus 

29 Humeral angles slightly produced, rounded apically, directed laterally ( Figs 104, 105View FIGURES 104–106); scutellum with dark apex ( Fig. 104View FIGURES 104–106); connexivum concolor to dorsal surface........................................................ Thyanta humilis 

- Humeral angles produced, acute apically, directed anterolaterally ( Fig. 107View FIGURES 107–108); scutellum apex concolor to dorsal surface; connexivum with orange maculae ( Fig. 107View FIGURES 107–108).................................................... Thyanta perditor 

30 Outline of anterolateral margins of pronotum not punctate ( Figs 110View FIGURES 109–112, 113View FIGURES 113–116); antennomere 4 cylindrical ( Fig. 2View FIGURES 2–5); sub lateral margin of abdomen not concolorous with abdominal venter ( Figs 111View FIGURES 109–112, 115View FIGURES 113–116)...................................... 31

- Outline of anterolateral margins of pronotum uniformly punctate ( Figs 66View FIGURES 65–68, 73View FIGURES 72–74); antennomere 4 conical ( Fig. 66View FIGURES 65–68); sub lateral margin of abdomen concolorous with abdominal venter ( Fig. 67View FIGURES 65–68).............................................. 32

31 Small specimens (not surpassing 12.00 mm); legs red to dark red; connexivum margin light castaneous with small black spot at apex ( Fig.111View FIGURES 109–112)............................................................................ Tibraca exigua 

- Large specimens (surpassing 12.00 mm); legs castaneous, concolor with the venter; connexivum with dark castaneous macule on anterior angles ( Fig. 115View FIGURES 113–116)............................................................ Tibraca limbativentris 

32 Dorsal surface setose ( Fig. 72View FIGURES 72–74); anterior angles of pronotum acute ( Fig. 73View FIGURES 72–74, black arrow)............. Glyphepomis setigera 

- Dorsal surface glabrous; anterior angles of pronotum rounded ( Fig. 66View FIGURES 65–68)......................................... 33

33 Abdominal sternites with densely distributed punctures medially, and sparse on sub lateral margin ( Fig. 67View FIGURES 65–68)............................................................................................. Glyphepomis adroguensis 

- Abdominal sternites with uniformly distributed punctures ( Fig. 70View FIGURES 69–71)............................ Glyphepomis pelotensis