Pedethma, Weise, 1923

Lingafelter, Steven W. & Konstantinov, Alexander S., 2000, Revision Of Pedethma Weise (Coleoptera: Chrysomelidae), The Coleopterists Bulletin 54 (4), pp. 413-458 : 455-457

publication ID

https://doi.org/ 10.1649/0010-065X(2000)054[0413:ROPWCC]2.0.CO;2

persistent identifier

https://treatment.plazi.org/id/7F768785-FFFC-FFC6-E48F-426006348AC9

treatment provided by

Tatiana

scientific name

Pedethma
status

 

Key to Species of Pedethma

The original structure of this key was developed through the use of DELTA (Dallwitz, et al. 1993) and was based on 21 characters. The aedeagus is most diagnostic for species of Pedethma , and an attempt to match them would be a preferable first start for identification. Females of P. australiensis , P. cookensis , P. kirejtshuki , P. sinuatipenis , and P. weisei are unknown. Because of this, the key is biased toward identification of male individuals.

1. Dorsal surface of aedeagus with transverse ridges ( Figs. 23i View Fig , 27b,f View Fig ) ---------------------------------------------------------------------------------------------------------------------------------- 2

1' Dorsal surface of aedeagus without transverse ridges ----------------------- 9

2(1). Elytra uniformly dark or light --------------------------------------------------------------------- 3

2' Elytra with at least one macula (occasionally with indistinct maculae) ---------------------------------------------------------------------------------------------------------------------------------- 5

3(2). Elytral pubescence limited to apex and margins ( Figs. 17–20 View Fig View Fig View Fig View Fig ) ----- 4

3' Elytral pubescence as numerous hairs over entire surface of elytron ( Fig. 21 View Fig ) ------------------------------------------------------------- P. pubescens , new species

4(3). Antennae pale yellow to antennomere 7; antennomeres 8–11 dark brown ( Fig. 16a View Fig ). Elytron with vague punctures at apex. Aedeagus of uniform width, with truncate apex and two extending arms ( Figs. 24a View Fig , 25a) --------------------------------------------------------------------- P. malandensis Weise

4'. Antennomere coloration variable, but rarely with abrupt difference in color of the basal 7 and apical 4 antennomeres as in P. malandensis . Elytron with typical punctation, striae complete (or nearly so) to apex. Aedeagus strongly tapering to a very narrowly rounded apex ( Figs. 22h View Fig , 26a) as in P. pubescens ; aedeagus has fine ventral ridges antemedially; spermathecal body elongate with weak curvature of distal and proximal ends ( Figs. 28k–l View Fig , 30k–l View Fig ) ---------------------------------------------- ----------------------------------------------------------------------------------------------- P. kurandensis , new species

5(2). Middle pronotal maculation present ( Figs. 14d View Fig , 19 View Fig ); antennomeres bicolored, darker at base and lighter at apex ------------------------------------------------- ----------------------------------------------------------------------------------------------------- P. maculata , new species

5'. Middle pronotal maculation absent; antennomeres mostly unicolorous ------------------------------------------------------------------------------------------------------------------------ 6

6(5). Aedeagal apex with vague or distinct arrowhead ( Figs. 23g –i View Fig ) ----- 7

6'. Aedeagal apex without arrowhead ------------------------------------------------------------- 8

7(6). Aedeagal apex with strong constriction before apex ( Fig. 23g View Fig ) ----------- --------------------------------------------------------------------------------------------------- P. pinnipenis , new species

7'. Aedeagal apex without strong constriction before apex ( Fig. 23h–i View Fig ) ------------------------------------------------------------------- P. humeromaculata , new species

8(6). Aedeagus venter with transverse ridges near apex ( Figs. 22f View Fig , 26c) -- ------------------------------------------------------------------------------------------------------- P. howdeni , new species

8'. Aedeagus venter without transverse ridges near apex ( Figs. 24c View Fig , 27f View Fig ) -------------------------------------------------------------------------- P. seymourensis , new species

9(1). Pronotal punctation very inconspicuous and fine (e.g., Figs. 17–19 View Fig View Fig View Fig ) -------------------------------------------------------------------------------------------------------------------------------- 11

9'. Pronotal punctation conspicuous, deep, and numerous ( Fig. 20 View Fig ) ------ 10

10(9). Elytra with very distinct maculations; pronotum with coarse punctures of approximately equal size and uniform distribution; pronotal width variable; median lobe of aedeagus constricted anteapically, straight in lateral view, ventral side deeply canaliculate ( Figs. 22j View Fig , 26f); length of body less than 3.0 mm ---------- P. weisei , new species

10'. Elytra uniformly pale or light brown; pronotum with unequal sized, confluent, coarse punctures making surface appear very heavily sculptured; pronotum much wider than long; median lobe of aedeagus curved in lateral view, ventral side not deeply canaliculate ( Figs. 22g View Fig , 25d); length of body greater than 3.0 mm ------------------------------------------ -------------------------------------------------------------------------------------------------- P. kirejtshuki , new species

11(9). Elytra color dark reddish brown to piceous (appearing black) ---- 12

11'. Elytra color not dark reddish brown to piceous --------------------------------- 14

12(11). Aedeagus broad for most of length with a well defined arrowhead and moderate anteapical constriction ( Figs. 22c–d View Fig , 26e); spermathecal body strongly curved with proximal and distal apices very close to one another ( Figs. 28a–c View Fig ); body nearly always longer than 2.5 mm -------------------------------------------------------------------------- P. fuscipennis Weise (in part)

12'. Aedeagus without constriction before apex; apex not shaped as arrowhead ( Figs. 22a–b, k View Fig ); body length averages 2.5 mm and only rarely exceeds 3.0 mm --------------------------------------------------------------------------------- 13

13(12) Aedeagus very broad toward apex and then abruptly angles to an arrowhead apex ( Figs. 22a–b View Fig , 25e–f); venter of body not piceous; spermatheca unknown ------------ P. australiensis , new species (in part)

13'. Aedeagus gradually widening toward apex which is broadly rounded ( Fig. 22k View Fig ); elytra and venter of body always dark piceous, appendages pale yellow; spermatheca ( Figs. 28e View Fig , 29c View Fig ) with sinuate body and widely separate proximal and distal ends ---------------------------------------------- -------------------------------------------------------------------------------------------------------------- P. nigra , new species

14(11). Aedeagus shape from lateral view with sinuate curvature ( Figs. 23b, f View Fig ; 27a, e View Fig ) ------------------------------------------------------------------------------------------------------------ 15

14'. Aedeagus shape from lateral view broadly curved or with weak curvature ------------------------------------------------------------------------------------------------------------------ 16

15(14). Aedeagus very long with apex much narrower than base and very strong sinuate curvature ( Figs. 23a–b View Fig ; 27a View Fig ) ---------------------------------------------------- ----------------------------------------------------------------------------------------------- P. sinuatipenis , new species

15'. Aedeagus relatively short with apex approximately as wide as base and weak sinuate curvature ( Figs. 23e–f View Fig ; 27e View Fig ) -------------------------------------------- ---------------------------------------------------------------------------------------------------- P. demiensis , new species

16(14). Aedeagal apex with distinct point or arrowhead (e.g., Figs. 22 View Fig c­d; 25b; 26e) ------------------------------------------------------------------------------------------------------------ 17

16'. Aedeagal apex rounded or truncate, without arrowhead ----------------- 18

17(16). Aedeagal apex with constriction, making spadelike appearance ( Figs. 22c–d View Fig , 25b, 26e); spermathecal body strongly curved with proximal and distal apices very close to one another ( Figs. 28a–c, g–h View Fig ); body averages 3.5 mm and nearly always longer than 3.0 mm ------------------ ------------------------------------------------------------------------------------------- P. fuscipennis Weise (in part)

17'. Aedeagal apex without constriction, not appearing spadelike ( Figs. 22a–b View Fig , 25e–f); spermatheca unknown; body length averages 2.53 mm, never over 3.0 mm ------- P. australiensis , new species (in part)

18(16). Aedeagus with broadly rounded apex with oblong impression on ventral face, gradually tapering to apex ( Fig. 23c–d View Fig ); spermatheca unknown; elytra with humeri darkened on most specimens and suture darkened narrowly at extreme edge --------- P. cookensis , new species

18'. Aedeagus long with slight constriction anteapically ( Fig. 25c); spermatheca as in P. howdeni , but with imbricate surface sculpturing ( Figs. 28j View Fig , 32a View Fig ); head piceous; pronotum strongly expanded antemedially ( Fig. 14a View Fig ) -------------------------------------------------------- P. suturalis Weise

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

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