Thursday, June 25, 2020

Two new carpenter bees: Xylocopa auriventris and Xylocopa romeroi


Carpenter bees got their name from their nesting behavior. Most of them burrow into hard plant material such as dead wood or bamboo and lay their eggs into the chamber. These bees are important pollinators for open-faced or shallow flowers. In fact for some species they are the only pollinators, e.g. for maypop (Passiflora incarnata) and Orphium. No other insect visits those.

Todays two new species were found in the Risaralda and the Valle del Cauca Departments of Colombia. 

Xylocopa auriventris was named after the colour of its abdomen (from the Latin words aureus (gold) and ventris (venter). The name Xylocopa romeroi honours the biologist Germán Villamizar Romero, father of the first author.

For the experts: A synopsis of the metallic carpenter bees Xylocopa subgenus Schonnherria Lepeletier in Colombia is presented. Eleven species were recognized: X. dimidiata Latreille, X. ecuadorica Cockerell, X. lateralis Say, X. lucida Smith, X. metallica Smith, X. muscaria (Fabricius), X. ornata Smith, X. viridis Smith, and X. simillima Smith, being this latter a new record for the country. In addition, two new species are described: X. auriventris n. sp. and X. romeroi n. sp. from the Colombian Andean and Pacific region, respectively. To stabilize the application of some names, lectotypes were designated for X. binotata Pérez (=X. lateralis), X. muscaria, X. ornata, X. simillima and X. viridis. Diagnoses, descriptions, comments, floral records, distribution maps, figures and an identification key are also provided.

Wednesday, June 24, 2020

A (not so) new fish: Microcanthus joyceae

You might have seen this group of fishes in pictures and videos from coral reefs and sometimes in a reef aquarium although this would be a rather rare sight. They are called stripey for obvious reasons and are also known as footballer or convict fish. 

This species is re-described as the taxonomy of the genus Microcanthus has been debated for a long time. The original description is from 1931 and the name was chosen to honour Joyce K. Allan, who provided the author with illustrations of this species for the original description.

For the experts: The taxonomy and classification of the microcanthid fish genus Microcanthus Swainson has been a subject of contention dating back to the 19th century. Its allopatric, disjunct anti-equatorial distribution across the Indo-West Pacific has resulted in the recognition of several nominal taxa, though these have been widely regarded as synonyms of Microcanthus strigatus (Cuvier). Following the results published in a companion study elsewhere by the authors, the taxonomy of Microcanthus and the validity of these nominal synonyms are herewith revised. Microcanthus strigatus is redescribed on the basis of 66 specimens from East Asia, Hawaii and Western Australia, and M. joyceae is resurrected and redescribed on the basis of 25 specimens from eastern Australia and the southwest Pacific. Microcanthus differs from other microcanthid genera in having the following combination of characters: dorsal-fin rays XI,15–17 (usually XI,16); anal-fin rays III,13–15 (usually III,14); pectoral-fin rays 15–17 (usually 16); scales ctenoid with ctenial bases present; lateral-line scales partially or heavily obscured by adjacent scales; and body pale in preservation with five horizontal dark stripes reaching the posterior edges of dorsal and anal fins, and base of caudal fin. The review is accompanied by a key to the genera of Microcanthidae.

Monday, June 22, 2020

A new toad: Megophrys chishuiensis

A couple of months ago I posted about Litter frogs (Family Megophryidae) which live in South East Asia. They are mostly famous for their camouflage which makes many of them look like dead leaves. A widely known species is the long nosed horned frog. 

There is another new species from China this time found in the Chishui National Nature Reserve, Guizhou province. The species name refers to the location this species was found.


For the experts: A new species of the genus Megophrys is described from Guizhou Province, China. Molecular phylogenetic analyses based on mitochondrial DNA and nuclear DNA sequences all strongly supported the new species as an independent clade sister to M. minor and M. jiangi. The new species could be distinguished from its congeners by a combination of the following characters: body size moderate (SVL 43.4–44.1 mm in males, and 44.8–49.8 mm in females; vomerine teeth absent; tongue not notched behind; a small horn-like tubercle at the edge of each upper eyelid; tympanum distinctly visible, rounded; two metacarpal tubercles on palm; relative finger lengths II < I < V < III; toes without webbing; heels overlapping when thighs are positioned at right angles to the body; tibiotarsal articulation reaching the level between tympanum and eye when leg stretched forward; in breeding males, an internal single subgular vocal sac in male, and the nuptial pads with black spines on dorsal surface of bases of the first two fingers.

Monday, June 15, 2020

A new grass fern: Actinostachys minuta

The grass ferns (Schizaeaceae) are a family of ferns mainly found in the tropics. Most of them are rather small plants and the new species is a so-called epiphyte which means it grows on the trunk of a tree fern. It was found on Mindanao Island, Philippines. The species name refers to is small size even compared to other members of the genus. 

For the experts: Actinostachys minuta Amoroso & Coritico (Schizaeaceae), from Mindanao, Philippines, is described herein as a new species. This species is distinguished from all other species of Actinostachys (grass ferns) by its notably short and narrow fronds, distinct triangular stipe, and bifid apex of the sorophore lamina with profuse white long hairs. This species is distinct from the other known Philippine species of Actinostachys by its diminutive epiphytic habit and a habitat restricted to the trunks of the tree fern Sphaeropteris polypoda (Baker) R.M.Tryon. A taxonomic key to the species of Philippine Schizaeaceae that incorporates the new species is provided.

Thursday, June 11, 2020

Two new spiders: Thelcticopis dahanensis and Thelcticopis unciformis

Thelcticopis
is a genus of huntsman spiders (family Sparassidae) that occurs almost exclusively in the Australasian region. Huntsman spiders are also known as giant crab spiders. Some of them can indeed grow quite large (up to 30 cm). The new species are not that large though and not known to be venomous (in contrast to some other huntsman spiders). Both were found in Taiwan.

One of the new species was named after the type locality and the other one after a shape of a part of the male palpal bulb

For the experts: Two new species of the genus Thelcticopis Karsch, 1884, T. dahanensis Zhu & Zhong, sp. nov. (♂) and T. unciformis Zhu & Zhong, sp. nov. (♂), are described and figured from Taiwan Island. Thelcticopis severa (L. Koch, 1875) is recorded from Guangdong and Fujian provinces for the first time. So far, Thelcticopis, including four species from China, is mainly distributed in the tropical or subtropical areas of China (Hainan, Taiwan, Yunnan, Guangdong, Fujian).

Wednesday, June 10, 2020

A new termite: Gastrotermes spinatus

Termites are insects that live in colonies and divide labor among castes, produce overlapping generations, and take care of their young collectively. Although this way of live is very similar to some species of hymenoptera, termites are at best distant cousins, closer related to roaches. There are more than 3,100 living termite species worldwide.

The species name is derived from the latin word spinatus which means spine. This refers to some spines on the body of the termite.


For the experts: Gastrotermes spinatus gen. n. sp. n is described from workers of a single foraging group collected in Cameroon. This soil-feeding termite aligns with the Labidotermes subgroup (Apicotermes group) because of its non-protruding and symmetrical enteric valve armature, its short P1, and its globular P3a. An asymmetrical field of robust sclerotized spines at the opening of the P3a is unique among the other Labidotermes subgroup genera.

Tuesday, June 9, 2020

A new leaf insect: Phyllium levantos

Leaf insects (family Phyliidae) literally look like leaves. The resemblance is so perfect (including structures that mimic bite marks in some species) that predators can't distinguish them from real leaves. These animals have a very particular walk. They rock back and forth, thereby mimicking a leaf moved by the wind. This behaviour has given them the name dancing leaf insects.

The new species was found on Papua New Guinea and these animals are so rarely found the authors named them after Lelantos, the Greek minor Titan of moving unseen.


For the experts: A new subgenus, Walaphyllium subgen. nov., is described within Phyllium Illiger, 1798 to accommodate three leaf insect species. One of the species included is newly described herein as Phyllium (Walaphyllium) lelantos sp. nov. from Papua New Guinea. This new subgenus of Phyllium can be diagnosed by a following combination of features. This new species is compared to the two additional new subgenus members, Phyllium zomproi Größer, 2001 and Phyllium monteithi Brock & Hasenpusch, 2003. Also for the first time the male morphology of Phyllium zomproi is described and illustrated. To conclude, a brief biogeographical view of the leaf insects on either side of the Torres Strait is presented, as well as a key to species and a distribution map to the known species of Phyllium (Walaphyllium) subgen. nov.

Thursday, June 4, 2020

A new fly: Sarcophaga mersinensis

This fly belongs to a family called the flesh-fly group and as the name implies, larvae feed on decaying meat astray need protein to develop. That's why eggs are laid on carrion, dung or sweet plant foods such a fruits or nuts. Many species are considered nuisance pests, but there are some that are vectors of pathogens and bacteria. Likely not our new one though. By the way, its species name refers to the Mersin Province in Turkey, where the new fly was discovered.

For the experts: A new species, Sarcophaga (Pandelleisca) mersinensis sp. nov. is described from the Mediterranean region of Turkey. The male terminalia are documented with line drawings, photographs and scanning electron microscope images. The species is compared with the two most similar species, Sarcophaga (Pandelleisca) baudeti (Lehrer) and Sarcophaga (Pandelleisca) theodori (Lehrer), both known from Israel. A key is provided to the western Palaearctic species of Pandelleisca Rohdendorf.

Tuesday, June 2, 2020

A new beetle: Tychobythinus inopinatus

The beetle family Staphylinidae, better known as rove beetles, is currently the largest group of beetles known. It contains about 60000 species in thousands of genera. Most rove beetles are predators of insects and other kinds of invertebrates, living in forest leaf litter and similar kinds of decaying plant matter. They are also commonly found under stones, and around freshwater and oceanic margins.

Today's new species is a cave dwelling representative found in the Grotta Monello in Sicily, Italy.  Although the authors give no explanation for the species name, my guess is they used the the latin word inopinatus which means unexpected.

For the experts: A new troglobitic species of the subfamily Pselaphinae (Coleoptera: Staphylinidae), Tychobythinus inopinatus sp. nov., is described from Monello Cave (Syracuse, Syracuse Province, Sicily). Major diagnostic features are illustrated based on both male and female specimens. The new species shows some adaptations to cave life, i.e., pale brown colour; setation consisting of long and flattened setae and suberect shorter setae; absence of wings; and anophthalmy and elongate legs and antennae. It can be easily separated from the related taxa by the different shapes of the head, palpi, gular carina of the male, and aedeagus. Tychobythinus inopinatus sp. nov. is known only from Monello Cave, a limestone cave in the south-eastern Sicily.