Coarazuphium, Gnaspini, Vanin & Godoy, 1998

Pellegrini, Thais Giovannini, Bichuette, Maria Elina & Vieira, Letícia, 2022, Coarazuphium bambui (Carabidae: Zuphiini), a new cave-dwelling beetle from the threatened region of Serra do Ramalho, Brazil, Zootaxa 5129 (4), pp. 557-568 : 562

Key to adult species of the genus Coarazuphium

(adapted from Pellegrini et al. 2021):

1. Elytron with apical margin truncated, not sinuate ( Pellegrini and Ferreira 2011: 49, Fig. 2A ).......................... 2

1`. Elytron with apical margin sinuate ( Godoy and Vanin, 1990: 796, Fig. 1 ) or with a slight apical sinuosity ( Pellegrini et al. 2020: 291. Fig. 5 )......................................................................................... 8

2(1). Head dorsally bearing bearing two pairs of setae, one anterior supraorbital setae (asos) and one postocular setae (pos) ( Pellegrini and Ferreira 2017: 556, Fig. 5 ).......................................................................... 3

2`. Head dorsally bearing three or more pairs of setae; rarely two pairs. If only two setae are present, the postocular setae (pos) is lacking............................................................................................. 5

3(2). Metafemur with a spine at the middle ventral side ( Pellegrini and Ferreira 2017: 556, Fig. 4 ); antennae short, about 0.68 times as long as the total body length......................................... C. spinifemur Pellegrini and Ferreira, 2017

3`. Metafemur without a spine at the middle ventral side; antennae long, reaching metafemur insertion.................... 4

4(3`). Aedeagus very long and slender, about 2.89 times as long as left paramere ( Pellegrini and Ferreira 2011: 49, Fig. 2 D-F).................................................................... C. tapiaguassu Pellegrini and Ferreira, 2011 b

4`. Aedeagus shorter, about 2.6 times as long as left paramere ( Pellegrini and Ferreira 2017: 557, Fig. 6 C-E)................................................................................ C. amazonicum Pellegrini and Ferreira, 2017

5(2`). Head dorsally bearing only two pairs of setae, one anterior supraorbital setae (asos) and one posterior supraorbital setae (psos) ( Bená and Vanin 2014: 291, Fig. 5 )............................................. C. ricardoi Bená and Vanin, 2014

5`. Head dorsally with three or more pairs of setae, at least one anterior supraorbital setae (asos), one postocular setae (pos) and one posterior supraorbital setae (psos).................................................................... 6

6. Head dorsally with three pairs of setae (the three mentioned in the 5`step)............. C. auleri Pellegrini & Vieira, 2021

6`. Head dorsally with more than three pairs of setae............................................................ 7

7(6`). Five setigerous punctures on the head dorsally, beyond the asos, pos and psos setae, it bears one pair of occipital setae (ocs) and one posterior supraorbital setae (psus) ( Ball and Shpeley 2013: 30, Fig. 4A ).......... C. whiteheadi Ball and Shpeley, 2013

7`. our setigerous punctures on the head dorsally. Other than the asos, pos and psos setae, head dorsally bearing one pair of posterior supraorbital setae (psus), more anterior and laterally than the psos ( Pellegrini et al. 2020: 297, Fig. 22).................................................................................. C. pains Álvares and Ferreira, 2002

8(1`). Head dorsally bearing at least two pairs of setae, the anterior supraorbital setae (asos) and the postocular setae (pos) are always present.............................................................................................. 9

8`. Head dorsally bearing from four to five pairs of setae, one anterior supraorbital setae (asos), one postocular setae (pos), one posterior supernumerary setae (psos) and one occipital setae (ocs) are always present.............................. 11

9(8). Overall body form elongate ( Pellegrini et al. 2020: 300, Fig. 33), maximum width of elytra near the middle. Head elongate, HW/HL ratio about 0.6 Elytra apical sinuosity with inner borders sharp ( Pellegrini et al. 2020: 300, Fig. 33). Male genitalia: right paramere styliform ( Gnaspini et al. 1998: 306, Fig. 10 ), about as long as left paramere........................................................................................... C. cessaima Gnaspini, Vanin and Godoy, 1998

9`. Maximum width of elytra near the middle ( Godoy and Vanin 1990: 796, Fig. 1 ), or posterior middle. Head subquadrangular, HW/HL ratio from 0.95............................................................................... 10

10 (9’). Male left paramere styliform ( Godoy & Vanin 1990: 798, fig. 2), elytra with one pair of short setae behind scutellum and two discal pairs ( Godoy & Vanin 1990: 798, fig. 1)..................................... C. tessai ( Godoy & Vanin 1990)

10’. Male left paramere broad, conchoid ( Fig. 13 ), elytra without discal setae or any setae behind the scutellum..................................................................................................... C. bambui sp. n.

11(8`). Head dorsally with two pairs of occipital setae (ocs) ( Pellegrini and Ferreira 2014 Fig. 2B )......................... 12

11`. Head dorsally with one pair of occipital setae (ocs).......................................................... 13

12(13). Elytron with a slightly apical sinuosity ( Pellegrini and Ferreira 2014: 537, Fig. 12A and C )............................................................................................... C. formoso Pellegrini and Ferreira, 2011

12’. Elytron with pronounced apical sinuosity, dorsal aspect of the head with two protuberances ( Pellegrini and Ferreira 2014: 537, Fig. 12B and D )...................................................... C. caatinga Pellegrini and Ferreira, 2014

13(11`).Head dorsally bearing one posterior supernumerary setae (psus) ( Pellegrini et al. 2020: 293, Fig. 6 ).................................................................................... C. lundi Pellegrini, Ferreira and Vieira, 2020

13`. Head dorsally without the posterior supernumerary setae (psus).................................................................................................................. C. bezerra Gnaspini, Vanin and Godoy, 1998

Figures

FIGURE 1. Geographic localization of all described Coarazuphium species including the Coarazuphium bambui sp. n. at its type locality (Gruna Boca da Lapa Cave), it is also show the Tropical Dryforest ecosystems, the limestone outcrops of the Bambui Supergroup, highlighting the state of Bahia, northeastern Brazil. A. Mining pressures related to future projects in the region; B. Impacts close to Gruna Boca da Lapa cave related to agriculture activities.

FIGURES 2-4. Gruna Boca da Lapa cave 2. Entrance of the type locality cave. 3. Details on the microhabitat where specimens of C. bambui sp. n. were found, substrate composed of pebbles, silt, and rock. 4. Gruna Boca da Lapa cave gallery showing the large river channel and the river banks. (Photographs 2-4 are from A. Lobo).

FIGURES 5-8. Coarazuphium bambui sp. n., male holotype. 5. Head, pronotum and prothorax, lateral view; Scale bar = 0.2 mm. 6. Habitus dorsal view; Scale bar = 1.0 mm. 7. Detail on hindwings; Scale bar = 0.2 mm. 8. Prothorax, ventral view; Scale bar = 0.2 mm.

FIGURES 9-13. Coarazuphium bambui sp. n. male holotype. 9-10. Genital segment capsule; Scale bar = 0.2 mm. 11. Aedeagus left view; 12. Aedeagus dorsal view; 13. Aedeagus right view; Scale bar = 0.2 mm.