Medauroidea Zompro, 2000

Ho, Wai-Chun George, 2020, New taxa of Clitumninae from Vietnam (Phasmatodea: Phasmatidae), Zoological Systematics 45 (2), pp. 104-117 : 106-107

3.2 Medauroidea Zompro, 2000

Medauroidea Zompro, 2000: 68 . Type species: Clitumnus extradentatus Brunner von Wattenwyl, 1907: 193 , by original designation.

Description. Medium-sized for Clitumninae. Apterous. Body slender and long. Female distinctly larger and more robust than male. Head oval. Vertex unarmed or with a pair of spines or horns in both sexes. Occiput flat. Antennae short, distinctly segmented. Thorax slender and elongate, with granules and/or spine-like tubercles. Mesonotum parallel-sided or gently expanded posteriorly in female, parallel-sided or broadly emarginated medially in male. Abdomen cylindrical. Female lacking noticeable praeopercular organ or with horn-like praeopercular organ on posteromedian area of seventh sternum. Anal segment with a broad V-shaped emargination on posterior margin in female, dilated into two semi-tergites in male. Female supra-anal plate distinct and small, indistinct in male. Female subgenital plate scoop-shaped. Male poculum small and cup-shaped. Cerci short in both sexes. Legs slender and long. Female femora with distinct serrations, male with indistinct serrations. Tibiae with small serrations or small spines in both sexes. Egg capsule oval.

Distribution. Cambodia, China, Laos and Vietnam.

Remarks. In Vietnam, five species of Medauroidea including M. cattienensis sp. nov., M. cornuta sp. nov., M. extradentata ( Brunner von Wattenwyl, 1907) , M. fasciata sp. nov. and M. regula ( Brunner von Wattenwyl, 1907) are currently recognised. Keys to the species (females and males) of the genus are provided.

Key to females of Medauroidea from Vietnam.

1. Seventh abdominal tergum with laterally expanded lobe .....................................................................................................................2

Seventh abdominal tergum parallel-sided ............................................................................................................................................3 2. Head armed with a pair of horns ........................................................................................................... Medauroidea cornuta sp. nov.

Head unarmed ....................................................................................................................................... Medauroidea fasciata sp. nov. 3. Head unarmed ................................................................................................................................. Medauroidea cattienensis sp. nov.

Head armed with a pair of horns or spines ...........................................................................................................................................4 4. Femora lacking noticeable armature ..................................................................................................................... Medauroidea regula

Femora with distinct serrations ................................................................................................................... Medauroidea extradentata

Key to males of Medauroidea from Vietnam.

1. Thorax and abdomen with a distinct mediolongitudinal band......................................................... Medauroidea cattienensis sp. nov.

Thorax and abdomen uniformly coloured ............................................................................................................................................2 2. Ventral carinae of mesofemora with distinct serrations............................................................................... Medauroidea extradentata

Ventral carinae of mesofemora with indistinct serrations.....................................................................................................................3 3. Anal abdominal segment longer than eighth abdominal tergum ........................................................... Medauroidea cornuta sp. nov.

Anal abdominal segment as long as eighth abdominal tergum.............................................................. Medauroidea fasciata sp. nov.