PSEPHENIDAE KNOWN FROM

Shepard, William D. & Sites, Robert W., 2019, Larval Psephenidae (Coleoptera: Byrrhoidea) of Thailand: Annotated List and Illustrated Key to Genera, The Coleopterists Bulletin 73 (2), pp. 259-282 : 261-262

publication ID

https://doi.org/ 10.1649/0010-065X-73.2.259

persistent identifier

https://treatment.plazi.org/id/039E7B39-FFDF-FFFC-8CC1-FC54FB07FCDD

treatment provided by

Valdenar

scientific name

PSEPHENIDAE KNOWN FROM
status

 

KEY TO THE SUBFAMILIES AND GENERA OF LARVAL PSEPHENIDAE KNOWN FROM View in CoL View at ENA THAILAND

(Larvae of Afropsephenoides Basilewsky , Heteropsephenoides Jeng and Jäch , Micreubrianax Pic , and Psephenoides Gahan are undescribed; one undescribed larva in Eubrianacinae is in our collections.)

1. Gills concealed by an operculum on the 9 th abdominal sternum ( Fig. 10 View Figs ) ................. 2

1 ʹ. Gills exposed on abdominal venter ( Fig. 11 View Figs ); operculum absent ............................... 3

2. Ninth abdominal segment surrounded by paratergites of the previous segment(s) ( Fig. 12 View Figs ). Psephenoidinae ........................... 4

2 ʹ. Ninth abdominal segment not surrounded by paratergites of the previous segment(s) ( Fig. 13 View Figs ). Eubriinae ................................... 5

3. Gills with branches arising from a central stalk ( Fig. 14 View Figs ). Psepheninae ................... .................. Mataeopsephus Waterhouse

3 ʹ. Gills palmate ( Fig. 11 View Figs ). Eubrianacinae …. 10

4. Setae on venter apically stellate ( Fig. 15 View Figs ); cephalic plate short and moderately thin ( Fig. 16 View Figs ) .................... Sinopsephenoides Yang

4 ʹ. Setae on venter apically rounded; cephalic plate usually absent, but if present, very thin and elongate ( Fig. 39 View Figs ) ............................ ....................... all other Psephenoidinae

5. Ninth abdominal segment entire posteriorly ( Fig. 17 View Figs ) ........................................... 6

5 ʹ. Ninth abdominal segment emarginate or bifurcate posteriorly ( Fig. 18 View Figs ) .................. 7

6. Paratergites apically truncate; 9 th abdominal segment as long as wide ( Fig. 35 View Figs ) ............ ................... Granuleubria Jäch and Lee

6 ʹ. Paratergites apically acicular; 9 th abdominal segment 2X longer than wide ( Fig. 33 View Figs ) .. ... .................... Homoeogenus Waterhouse

7. Meso- and metathoracic paratergites truncate laterally ( Fig. 19 View Figs ) .................................. .................... Microeubria Lee and Yang

7 ʹ. Meso- and metathoracic paratergites acicular laterally ( Fig. 20 View Figs ) ................................ 8

8. Prothoracic paratergites extending from middle of lateral margins ( Fig. 21 View Figs ) ........... ....... Dicranopselaphus Guérin-Méneville View in CoL

8 ʹ. Prothoracic paratergites extending from posterolateral corners ( Figs. 34, 36 View Figs ) ……… 9

9. Body ovate, usually with color pattern ( Fig. 36 View Figs ) ............... Schinostethus Waterhouse

9 ʹ. Body elongate, usually concolorous ( Fig. 34 View Figs ) ............................. Macroeubria Pic

10. Gap between abdominal paratergites 6 and 7 ( Fig. 3 View Figs ) ........................................... 11

10 ʹ. Abdominal paratergites 6 and 7 contiguous ( Fig. 2 View Figs ) ........................................... 12

11. Periocellar lines present ( Figs. 2, 3 View Figs ) .......... ............. Jaechanax Lee, Satô, and Yang

11 ʹ. Periocellar lines absent ( Fig. 1 View Figs ) ................ ............. Odontanax Lee, Satô, and Yang

12. Periocellar lines complete ( Fig. 3 View Figs ); costal lines present ( Figs. 1–3 View Figs ) ......................... ............ Mubrianax Lee, Satô, and Yang

12 ʹ. Periocellar lines incomplete ( Fig. 2 View Figs ); costal lines absent .......................................... ............. Jinbrianax Lee, Satô, and Yang

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Psephenidae

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