Hydraenidae

Deler-Hernández, Albert & Delgado, Juan A., 2017, The Hydraenidae of Cuba (Insecta: Coleoptera) II: Morphology of preimaginal stages of six species and notes on their biology, Zootaxa 4238 (4), pp. 451-498: 494

publication ID

https://doi.org/10.11646/zootaxa.4238.4.1

publication LSID

lsid:zoobank.org:pub:C82909F6-9264-45D1-A04F-43656263A4D6

persistent identifier

http://treatment.plazi.org/id/03D58937-DB03-FFB9-FF27-E358B1DFFCCF

treatment provided by

Plazi

scientific name

Hydraenidae
status

 

Key to the Cuban genera and species of Hydraenidae  larvae

1. Urogomphi with the distance between their bases equal to or longer than the mid-width of their basal segment (URI). Urogomphal segment URII cup-shaped distally ( Fig. 6View FIGURE 6 e). Dorsal thoracic pores C4 absent ( Figs. 4View FIGURE 4 c; 7c; 9c). Mesothorax with setae of the posthypopleurites (Pohy 1) short ( Fig. 7View FIGURE 7 d).............................................. 2 ( Hydraena  )

1’ Urogomphal bases of segments URI contiguous. Urogomphal segment URII evenly rounded distally ( Figs. 18View FIGURE 18 f; 27d). Dorsal thoracic pores C4 present ( Figs. 16View FIGURE 16 e; 20c; 22c; 25b; 27b). Mesothorax with setae of the posthypopleurites (Pohy 1) long ( Figs. 16View FIGURE 16 f; 22d)............................................................................................3

2. Antennal solenidium IIS2 of second and third instar larvae with a distal notch (Fig. 30b)............... H. guadelupensis 

2’ Antennal solenidium IIS2 of second and third instar larvae evenly rounded, without a distal notch (Fig. 30a)........................................................................................ .. remaining species of Hydraena 

3. Clypeus with two pointed projections at the level of setae Cl1 ( Figs. 22View FIGURE 22 a; 25a; 27a). Antennal solenidium IIS2 peg-like ( Fig. 23View FIGURE 23 e). Frontal area of head capsule of first instar with four egg-bursters ( Fig. 22View FIGURE 22 a)..... Ochthebius  (a single species: attritus  )

3’ Clypleus without pointed projections at the level of setae Cl1. Antennal solenidium IIS2 conical ( Fig. 17View FIGURE 17 e). Frontal area of head capsule of first instar with two egg-bursters......................... Gymnochthebius  (a single species: fossatus  )