#Deronectes
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palustris.bsky.social
The diving beetle Deronectes latus was described as new to science by J.F. Stephens in 1829 from specimen collected by L. Rudd of Marton Lodge (now Stewart's Park, Middlesbrough). Ormesby Beck, a short walk away, would have been nearest likely habitat for this running water species.
📷U Schmidt, CC.
November 1, 2025 at 7:30 PM
coleopsoc.bsky.social
#LiteratureNotice Goczał et al. Formation of beetle elytra and the most spectacular animal radiation in the history of Earth doi.org/10.1093/zool... #Beetle #Beetles #Biodiversity #Morphology
Examples of adaptive elytral innovation in various habitats: A, cross-section of the fused elytra of the diabolical ironclad beetle Phloeodes diabolicus and magnification of the medial sutures ( fig. 1a, e); B, discontinuous gas exchange enabled by the subelytral cavity in the desert tenebrionid beetle Eleodes armata (based on Ahearn 1970: fig. 2); C, fog-basking behaviour of a Namib Desert beetle (based on Domen et al. 2014: fig. 1b); D, predaceous diving beetle and magnification of the cross-section of its subelytral cavity filled with air; E, robust intraelytral trachea of predaceous diving beetle Deronectes aubei ; F, cross-section of the elytra of the predaceous diving beetle Deronectes aubei showing tracheole penetrating the elytra (based on Kehl and Dettner 2009: fig. 3e); G, whirligig beetle (exposed abdomen is used as steering organ); H, leaf beetle of the genus Hispa Linnaeus, 1767 covered with protective spikes; I, weevil Catasarcus spinipennis Fåhraeus, 1840 with large protective elytral spikes; J, weevil Lamprocyphus augustus (Illiger, 1801) and magnification on elytral scales characterized by photonic crystals; K, wasp-mimic longhorn beetle of the genus Hesthesis Newman, 1840; L, shortened elytra of Malachiinae allow for exposition of eversible abdominal vesicles containing toxic alkaloids; M, rove beetle Borolinus minutus (Laporte de Castelnau, 1840) characterized by shortened elytra and flexible abdomen; N, widened elytra of the violin beetle Mormolyce phyllodes Hagenbach, 1825 provide effective camouflage during hunting within leaf-litter or tree bark; O, shortened elytra of Diagrypnodes Waterhouse, 1876 provide flexibility of the uncovered abdomen and increase manoeuvrability in narrow subcortical habitat; P, worker of ant Formica lemani Bondroit, 1917 licking abdominal glands of the aleocharine rove beetle Lomechusa sinuata; and Q, termitophilous aleocharine beetle Austrospirachtha carrijoi characterized by remarkable termite-like appearance.
August 24, 2025 at 3:53 AM
wenfeiliao.bsky.social
My first time seeing #Deronectes sp. I thought it was a giant Hydroporus 😀 Deronectes is a genus under the tribe #Hydroporini

#Dytiscidae #Coleoptera #DivingBeetle
May 27, 2025 at 9:00 AM