Yamuy constratus, Arriaga-Varela & Tomaszewska & Szawaryn & Robertson & Seidel & Ślipiński & Fikáček, 2023

Arriaga-Varela, Emmanuel, Tomaszewska, Wioletta, Szawaryn, Karol, Robertson, James, Seidel, Matthias, Ślipiński, Adam & Fikáček, Martin, 2023, The resurrection of Cerasommatidiidae, an enigmatic group of coccinelloid beetles (Coleoptera: Coccinelloidea) based on molecular and morphological evidence, Zoological Journal of the Linnean Society 197 (4), pp. 1078-1115 : 1104-1107

publication ID	https://doi.org/ 10.1093/zoolinnean/zlac082
publication LSID	lsid:zoobank.org:pub:99842C3A-879F-4552-96B7-204D79CF3EDF
DOI	https://doi.org/10.5281/zenodo.7797601
persistent identifier	https://treatment.plazi.org/id/03C2CE00-FFE3-FF86-3EEB-0F99FD0F450B
treatment provided by	Plazi
scientific name	Yamuy constratus
status

Treatment

YAMUY CONSTRATUS ARRIAGA- VARELA,

TOMASZEWSKA & SZAWARYN SP. NOV.

( FIGS 12A, B View Figure 12 , 13B–F View Figure 13 , 14A–C View Figure 14 , 15A–H View Figure 15 , 19A–B View Figure 19 , 20A View Figure 20 )

Zoobank registration: urn: lsid: zoobank. org:act: 5CD938AC-7821-46A6-ADB3-C64CC573D46F:

Type material: Holotype, male, PUERTO RICO: Portorico Mor. [green label]/ 55669/ Zool. Mus. Berlin/ frontalis m. [handwriting] ( MNB) . Paratypes: PUERTO RICO: Portorico Moritz Nr. 55 669 [green label]/ Zool. Mus. Berlin (one female, MNB) ; Naguabo, El Yunque Nat. Forest , S. part, 4.9 km N of Río Blanco, 18°15.8′N, 65°47.3′W; 495 m, 24.vi.-2.vii.2016; Fikáček & Seidel lgt. PR11// flight intercept trap at the margin of the rainforest in an area with many flowering Etlingera elatior plants (one female, totally dissected, NMPC) GoogleMaps ; Puerto Rico, El Verde Res. Sta., 250 m, Carib Nat. For. , Rio Grande, 19 July 1994, slime mold fruit. body, M. A. Ivie (one female, MTEC; one female, MIZ) ; VENEZUELA: Caracas Moritz Nr. 55 670 [green label]/ Zool. Mus. Berlin (one female, MNB) ; same and 55670/ luridellus m. [handwriting]/ Zool. Mus. Berlin (one, MNB) .

Diagnosis: Yamuyconstratus canbeeasilydistinguished from Y. marginatus by having uniformly coloured elytra ( Fig. 12A, B View Figure 12 ), the lateral margins of the pronotum narrowly bordered by a simple, thin bordering line and with short internal subparallel carinae at base ( Fig. 15C View Figure 15 ) (in Y. marginatus internal carina demarcating a wide area is present throughout the length of pronotum), the anterior margin of metaventrite and abdominal ventrite 1 with irregularly crenulate bordering line, without longitudinal carinae ( Fig. 15G, H View Figure 15 ) (in Y. marginatus anterior margin of metaventrite and abdominal ventrite 1 with short postcoxal longitudinal carinae beyond each coxal cavity) and by peculiar punctation on dorsal body surface: apart from long setae present in both species, a tiny short hairs are growing from conspicuous tubercles set in round foveolate punctae in Y. constratus ( Fig. 15C, F View Figure 15 ), while in Y. marginatus short hairs are growing from simple punctae.

Description: Body: length 0.9 mm, 1.3 times as long as wide, 2.0 times as long as high, short oval and moderately convex. Coloration uniformly brown to pale-yellow ( Fig. 12A, B View Figure 12 ).

Antenna nearly 0.4 of length of body ( Fig. 15A View Figure 15 ); antennomeres 1–6 as long as wide; antennomeres 7–9 subquadrate. Apical labial palpomere short and acuminate ( Fig. 15A View Figure 15 ), 1.8 times as long as wide.

Pronotum 2.0 times as wide as long, 1.3 times wider at widest part than on front angles ( Fig. 15C View Figure 15 ). Anterior margin with bordering line vanishing medially. Lateral edges bordered with simple thin bordering line, and with internal lateral carina reaching at most about basal third length of pronotum. Pronotal disc not concave near lateral margins. Base of pronotum not bordered. Posterolateral corners without indentation. Prosternal process with apex about 0.3 of width of procoxal cavity ( Fig. 15D View Figure 15 ), narrowest near half-length, distinctly widened apically, lateral carinae reaching beyond half-length of prosternum, with area between carinae distinctly depressed.

Elytra ( Figs 12A View Figure 12 , 15F View Figure 15 ) 0.6 mm long, about as long a wide, 2.5 times as long and 1.4 times as wide as pronotum; lateral margins visible from above ( Fig. 12A View Figure 12 ). Mesoventral process about as wide as mesocoxal diameter ( Figs 13D View Figure 13 , 15G View Figure 15 ). Metaventrite with a few fine setiferous punctures mainly on anterior half; anterior margin without longitudinal carinae ( Figs 13D View Figure 13 , 15G View Figure 15 ).

Legs. Meso- and metatrochanters weakly flattened, not produced posteriorly ( Figs 13D View Figure 13 , 15D, G View Figure 15 ).

Abdomen. Ventrite 1 with anterior margin distinctly, simply margined, without postcoxal lines ( Fig. 15H View Figure 15 ); longitudinal carina below each metacoxa absent. Male genital segment as in Fig. 14A View Figure 14 .

Male genitalia ( Fig. 14B View Figure 14 ). Aedeagus with penis short and stout, sclerotized, narrow at base, weakly widening towards ramificate apex. Tegmen sclerotized short ring, with long ramificate projection extending anteriorly beyond apex of penis; tegminal strut short.

Female genitalia ( Fig. 14C View Figure 14 ). Ovipositor weakly sclerotized. Spermatheca comparatively large, irregular – ‘infundibuliform’, submembranous; sperm duct short; accessory gland small membranous, of irregular-cordate shape. Proctiger large, weakly sclerotized.

Etymology: From the Latin, constratus , flat, plane, referring to the mostly flat lateral areas of the pronotum, having only short lateral carinae at base.

Biology: One of the studied specimens was collected from a slime mold fruiting body at an elevation of around 250 m, while another specimen was collected using a flight intercept trap installed at the margin of a rainforest at elevation of 495 m ( Fig. 19A, B View Figure 19 ).

Distribution: Puerto Rico, Venezuela ( Fig. 20A View Figure 20 ).