The histology of the cerebral neurosecretory system in several representatives of Cleroidea (Coleoptera, Insecta).
In Thymalus sp. (Peltidae), Melambia tekkensi (Trogositidae), Trichodes apiarius and Thanasimus formicarius (Cleridae), the composition of cerebral neurosecretory cells (NSC) is similar to that found earlier in Meloidae (Panov 1985a) and Tenebrionidae (Melnikova and Panov 1981; Melnikova 1983). 20 type I NSCs, 16 type II NSCs, 4 type III NSCs, several type IV NSCs and 4 type V NSCs are characteristic of their pars intercerebralis. On the other hand, a reduction of type I and II NSC number to 10 and 12 cells, respectively, was revealed in Malachius affinis, Malachius viridis and Malachius bipustulatus (Melyridae). There are 6 large dorsolateral NSCs and 2 lateral ones in each brain hemisphere of most Cleroidea studied. Their retrocerebral endocrine complex is similar to that of most polyphagous coleopterans: a single nervus corporis cardiaci leaves each brain side, the corpora cardiaca are fused with lateral aorta walls and corresponding corpora allata.
Panov
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A. N. Severtzov Institute of Evolutionary Animal Morphology and Ecology, USSR Academy of Sciences, Moscow.
D000818:Animals; D001517:Coleoptera / Q000033:anatomy & histology* / Q000502:physiology; D007313:Insecta / Q000033:anatomy & histology* / Q000502:physiology; D009490:Neurosecretory Systems / Q000033:anatomy & histology*; D013045:Species Specificity