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The hemispherical head is prevalent in   Gryllinae   crickets, so the rare crickets that have a unique form of head will be extremely unusual. In previous studies, this special feature can be one of the important features to distinguish and identify these crickets. But does this particular head shape truly reflect a clear-cut taxonomic relationship? The species of the genus    Loxoblemmus    have a typical truncate head; species of the genus    Stephoblemmus    have a more exaggerated truncate head, with the frontal end even extending into a lamellar. The genus    Mitius    is relatively unusual in that species of this genus have both globose or truncate heads. How are these species related? Does the cephalic shape perfectly reflect the natural classification of these species? Based on these questions, the study applied species definition and morphological classification to explore the intergeneric and intrageneric species relationships of the genera    Mitius   ,    Stephoblemmus   , and    Loxoblemmus   , and derived the following main conclusions: (1)    Mitius    and    Stephoblemmus    are related and distinct from    Loxoblemmus   ; (2)    Mitius    species bear two types of frons (truncated and rounded), but this feature disallows them to be classified as natural groups; (3) one genus synonym and three species synonyms are raised (   Mitius    Gorochov, 1985  syn. n. ,    Mitius   splendens    (Shiraki, 1930)  syn. n. ,    Mitius   eryuanensis    Yuan, Xie &amp; Liu, 2021  syn. n.  and    Mitius   brevipennis    Yuan, Ma &amp; Gu, 2022  syn. n. ), and seven new status combinations are proposed (   Stephoblemmus   blennus    (Saussure, 1877)  comb. n. ,    Stephoblemmus   castaneus    (Chopard, 1937)  comb. n. ,    Stephoblemmus   enatus    Gorochov, 1994  comb. n. ,    Stephoblemmus   flavipes    (Chopard, 1928)  comb. n. ,    Stephoblemmus   minor    (Shiraki, 1911)  comb. n. ,    Stephoblemmus   minutulus    (Yang &amp; Yang, 1995)  comb. n.  and    Stephoblemmus   vaturu    (Otte &amp; Cowper, 2007)  comb. n. ). The studies indicated that frons shapes that appear to be significantly different might not always reflect the correct   Gryllinae   species relationships and a combination of more taxonomic features and taxonomic techniques is needed often to reveal the true taxonomic relationships.

arthropod systematics andamp; phylogeny

On a taxonomic feature that has been overestimated in classification practice: an integrative taxonomic revision of    Stephoblemmus    Saussure, 1877 based on morphology and molecular phylogeny (  Orthoptera  :   Grylloidea  ;   Gryllidae  ;   Gryllinae  )